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# OOHMAGE: Electrical Protection Device Manufacturers

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## Pages
- [Data Deletion Instructions](https://www.oohmage.com/data-deletion-instructions/): Last updated: July 18, 2026
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- [Low-Voltage Circuit Protection Solutions](https://www.oohmage.com/low-voltage-circuit-protection-solutions/): Low-Voltage Protection Portfolio
- [FAQ](https://www.oohmage.com/faq/): Standard in-stock models: 3 to 7 days. Out-of-stock or customized models: 10 to 25 days, depending on order quantity and process.
- [Products](https://www.oohmage.com/products/)
- [Catalog](https://www.oohmage.com/catalog/): OOHMAGE Miniature Circuit Breaker Catalogue 2026 Download PDF MCCB – PRODUCT SELECTION MANUAL Download PDF SOLAR SYSTEM DEVICES – PRODUCT SELECTION MANUAL Download PDF LOW-VOLTAGE COMPONENT – PRODUCT SELECTION MANUAL Download PDF
- [Contact Us](https://www.oohmage.com/contact/): Welcome to OOHMAGE . please submit the following form. We will respond within 1 business day. Get in Touch
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- [Blog](https://www.oohmage.com/blogs/)
- [Home](https://www.oohmage.com/): Production and Supply for Low-Voltage Electrical Products

## Posts
- [AC vs DC Combiner Box: Which Does Your Solar System Need?](https://www.oohmage.com/ac-vs-dc-combiner-box-which-does-your-solar-system-need/): Only “solarcombiner box” in your quotation is far from sufficient. What should be connected to the box? A PV string or an inverter output? They match different jobs. The price and enclosure size can be considered at a later stage. What connects to the input is the top priority.
- [3 Phase Surge Protector: 7 Checks Before Buying](https://www.oohmage.com/3-phase-surge-protector-7-checks-before-buying/): Figure 1. Three-phase SPD selection starts with system facts, not the largest kA number.
- [Can an AC MCB Be Used on DC? A Model-by-Model Compatibility Checklist](https://www.oohmage.com/can-an-ac-mcb-be-used-on-dc-a-model-by-model-compatibility-checklist/): An AC-only miniature circuit-breaker,you cannot treat it as a DC circuit by default.Confirm before using: If the manufacturer explicitly rates the selected model for the required DC voltage, pole arrangement, polarity where applicable, fault current, and breaking capacity.Some breakers carry both AC and DC ratings, but these alone cannot reflect the actual situation.
- [2 Pole vs 4 Pole RCCB: How to Choose the Right Type, Sensitivity and Wiring Setup](https://www.oohmage.com/2-pole-vs-4-pole-rccb-how-to-choose-the-right-type-sensitivity-and-wiring-setup/): This buyer‑focused guide compares 2‑pole and 4‑pole RCCBs for single‑phase and three‑phase‑four‑wire systems. It walks you through selecting the correct RCCB type, residual‑current sensitivity and protection coordination. Multiple practical checklists, frequent‑selection mistakes and quotation‑ready specification lists are included to help distributors, panel builders and installers specify the right residual‑current breaker and prevent unwanted tripping.
- [RCBO vs RCD: What Trips, What Stays On, and What Buyers Should Specify](https://www.oohmage.com/rcbo-vs-rcd-what-trips-what-stays-on/): The RCBO integrates residual current protection with overload and short-circuit protection, and can independently protect and disconnect individual circuits. While an RCD is a general term for residual current protection devices, it may not include overcurrent protection; in many distribution cabinets, a shared RCD or RCCB needs to be used in conjunction with independent overcurrent protection devices for each circuit.
- [What Is a Shunt Trip? How It Works in Circuit Breakers and What Buyers Should Specify](https://www.oohmage.com/what-is-a-shunt-trip/): The concept of remote tripping is simple, but in actual operation, project teams often encounter difficulties in specifying the components. The panel factory may require circuit breakers triggered by fire alarm relays, PLC outputs, building management system instructions, or other coordinated control. At this point, "diversion tripping" is only the first step in the specification.
- [Why Does an RCBO Keep Tripping?8 Common Causes and a Step-by-Step Diagnostic Checklist](https://www.oohmage.com/why-does-an-rcbo-keep-tripping/): An RCBO on the socket circuit seemed normal after resetting, but the water heater's switch tripped again as soon as it started heating. In another case, after the distribution cabinet was upgraded, even when all the electrical appliances were unplugged, the same tripping phenomenon occurred. Both circuits were experiencing "frequent tripping", but the underlying causes of the faults might be completely different.
- [Electrical Distribution Box Selection Checklist: 7 Details to Confirm Before Quotation](https://www.oohmage.com/electrical-distribution-box-selection-checklist/): The buyer sent a seemingly clear request: “I need a 24-way distribution box.” However, this message did not specify whether only the shell was needed or if the complete circuit board was included; nor did it mention which devices needed to be installed, the installation method to be adopted, or the site environment.
- [Types of Circuit Breakers: How MCB, MCCB, RCCB and RCBO Differ](https://www.oohmage.com/types-of-circuit-breakers/): The main types of circuit breakers used in low-voltage distribution include miniature circuit breakers (MCBs), molded case circuit breakers (MCCBs) and residual-current devices such as RCCBs and RCBOs. They are not interchangeable. MCBs and MCCBs are selected for overcurrent protection in different circuit roles, an RCCB provides residual-current protection without integral overcurrent protection, and an RCBO combines residual-current and overcurrent protection in one device.
- [MCCB kA Rating: How to Choose the Right Breaking Capacity Before You Buy](https://www.oohmage.com/mccb-ka-rating/): The kA rating refers to the maximum short-circuit current that a circuit breaker can safely interrupt under specified conditions. For MCCB, this value constitutes a part of its interrupting capacity rather than its normal rated operating current. Choosing the correct kA rating helps to prevent the circuit breaker from malfunctioning when the fault current exceeds the limit that the equipment can clear.
- [Surge Protective Device Guide: Type 1 vs Type 2 SPD, TVSS, AC/DC & 3 Phase Selection](https://www.oohmage.com/surge-protective-device-guide-type-1-vs-type-2-spd-tvss-ac-dc-3-phase-selection/): Transient overvoltage problems are not limited to the field of household power socket plugs. In low-voltage distribution systems, control cabinets, commercial buildings, industrial equipment, communication rooms, and solar/pv (PV) projects, brief surge events can cause sensitive components and the connected loads to endure extremely high voltage stress. For procurement personnel and engineers, the key issue is not whether the surge protection device (SPD) is useful, but rather which device is most suitable for the specific system design.
- [Solar Combiner Box Wiring Diagram: Fuses, Breakers, SPD & Disconnect Layout](https://www.oohmage.com/solar-combiner-box-wiring-diagram-fuses-breakers-spd-disconnect-layout/): The wiring diagram of the solar energy combiner box shows how multiple photovoltaic strings enter the combiner box, pass through the string protection device, connect to the positive and negative busbars, ground the surge protection device, and connect to the inverter through the DC circuit breaker. In other words, this diagram not only indicates the direction of the lines but also clarifies how the protection, isolation, grounding and output configuration processes work together.
- [3 Phase MCCB: Ratings, Sizes, kA Capacity, and Selection Basics](https://www.oohmage.com/3-phase-mccb-ratings-sizes-ka-capacity-and-selection-basics/): Three-phase molded case circuit breaker (MCCB) is a protective device designed to safeguard three-phase electrical systems from overload and short-circuit faults. When selecting a three-phase MCCB solution, engineers and procurement personnel must consider far more than just the rated current. Factors such as system voltage, pole configuration, fault current level, interrupting capacity, load characteristics, and project documentation all influence whether the circuit breaker is suitable for a particular application.
- [What Is the BS Number for an RCBO? BS EN 61009-1 Explained](https://www.oohmage.com/what-is-the-bs-number-for-an-rcbo-bs-en-61009-1-explained/): If you are searching for the RCBO BS number, the answer most commonly required in UK and IEC-based electrical procurement is BS EN 61009-1. This is the principal product standard associated with residual current circuit breakers with overcurrent protection used in residential, commercial, and similar installations.
- [Changeover Switch vs ATS vs Isolator vs Circuit Breaker: Backup Power Switching Guide](https://www.oohmage.com/changeover-switch-vs-ats-vs-isolator-vs-circuit-breaker-backup-power-switching-guide/): When a small factory experiences a power outage during production, the backup generator immediately starts up; at this point, the electrical team needs to perform load switching, while also ensuring that no reverse power supply (reverse feed) is sent to the grid and that maintenance personnel do not come into contact with live equipment. In the solar backup power system, the same practical problem appears in a different form: which device is responsible for load switching? Which device isolates the inverter? And which device executes the trip action during a fault?
- [How to Wire & Install an RCBO: A Step-by-Step Electrical Guide](https://www.oohmage.com/how-to-wire-install-an-rcbo-a-step-by-step-electrical-guide/): RCBO (Residual Current Breaker with Overcurrent Protection Function) provides independent leakage protection and overcurrent protection for each end circuit. This means that the lighting circuit, socket circuit, kitchen circuit or electrical circuit can trip independently without causing the power supply of half of the circuits in the distribution box to be simultaneously cut off.
- [Your Ultimate Guide to MCB Distribution Boards: An In-Depth Look at MCB Circuit Breaker Characteristics and Core Functions](https://www.oohmage.com/your-ultimate-guide-to-mcb-distribution-boards-an-in-depth-look-at-mcb-circuit-breaker-characteristics-and-core-functions/): Discover the core MCB functions and internal mechanics. Learn how to configure a highly reliable MCB distribution board using the right MCB circuit breaker for global infrastructure.
- [What Is an RCCB? A Deep Dive into RCCB Meaning and the Core Differences in RCCB and ELCB](https://www.oohmage.com/what-is-an-rccb-a-deep-dive-into-rccb-meaning-and-the-core-differences-in-rccb-and-elcb/): Learn the complete RCCB meaning, how an RCCB works, and the key differences in RCCB vs ELCB for electrical safety and protection.
- [The Ultimate Electrical Switch Guide: How to Change an Electrical Switch and How to Connect an Electricity Switch Safely](https://www.oohmage.com/the-ultimate-electrical-switch-guide-how-to-change-an-electrical-switch-and-how-to-connect-an-electricity-switch-safely/): Learn how to change an electrical switch safely with this comprehensive guide. Discover expert tips on how to connect an electricity switch and troubleshoot issues.
- [How to Test and Replace a Faulty Fuse Holder: AC Fuse Holder and Amp Fuse Holder Diagnostics](https://www.oohmage.com/how-to-test-and-replace-a-faulty-fuse-holder-ac-fuse-holder-and-amp-fuse-holder-diagnostics/): Stop guessing and start diagnosing! Learn the exact step-by-step methods to test an AC fuse holder and decode amp fuse holder specs to prevent catastrophic panel failure.
- [Electrical Safety 101: How to Properly Size Your Fuse Holder, AC Fuse Holder, and Amp Fuse Holder](https://www.oohmage.com/electrical-safety-101-how-to-properly-size-your-fuse-holder-ac-fuse-holder-and-amp-fuse-holder/): Learn how to size a Fuse Holder correctly, including AC Fuse Holder selection and choosing the right amp fuse holder for electrical safety.
- [Molded Case Circuit Breaker Manufacturer – A Complete Guide for Buyers](https://www.oohmage.com/molded-case-circuit-breaker-manufacturer-guide/): As global demand continues to grow, the market is filled with countless options—from local MCCB suppliers to large-scale MCCB manufacturers in China. While this creates opportunities, it also introduces a challenge: how to choose the right molded case circuit breaker manufacturer for your project.
- [Inspecting a Molded Case Circuit Breaker: What’s Inside and How to Spot Damage](https://www.oohmage.com/inspecting-a-molded-case-circuit-breaker-whats-inside-and-how-to-spot-damage/): Learn what a Molded Case Circuit Breaker contains, how to spot internal and external damage, and when to replace these critical industrial safety devices.
- [Circuit Breaker vs Surge Protector – What’s the Difference?](https://www.oohmage.com/circuit-breaker-vs-surge-protector-whats-the-difference/): Understand the technical differences in the circuit breaker vs surge protector debate. Learn how to design a layered circuit protector strategy for your facility.
- [Molded Case Circuit Breaker (MCCB): What It Is, What It Contains, and How to Select One](https://www.oohmage.com/molded-case-circuit-breaker-mccb-what-it-is-what-it-contains-and-how-to-select-one/): Learn what a molded case circuit breaker (MCCB) contains, how it works, and how to select the right unit for heavy industrial power networks.
- [Metal vs Plastic Electrical Distribution Box – Pros, Cons, and Best Applications](https://www.oohmage.com/metal-vs-plastic-electrical-distribution-box-pros-cons-and-best-applications/): Compare metal and plastic distribution boxes. Learn their pros, cons, and best applications to select the right enclosure for your electrical project.
- [How to Choose the Right Distribution Box for Your Home or Workshop](https://www.oohmage.com/how-to-choose-the-right-distribution-box-for-your-home-or-workshop/): Learn how to choose the right distribution box for your home or workshop. Discover sizing rules, component selection, and strict electrical safety standards.
- [How Does an RCBO Work? Inside the Dual-Function Circuit Breaker](https://www.oohmage.com/how-does-an-rcbo-work-inside-the-dual-function-circuit-breaker/): Discover how an RCBO circuit breaker works to provide overload, short-circuit, and earth leakage protection in one device. Learn about its core components.
- [Individual Circuit Protection: Why RCBOs Are the Gold Standard for Modern Homes](https://www.oohmage.com/individual-circuit-protection-why-rcbos-are-the-gold-standard-for-modern-homes/): Discover how an rcbo circuit breaker works. Learn why a Residual Current Circuit Breaker with Overcurrent protection is essential for modern electrical safety and compliance — and why top engineers won't build without one.
- [The Silent Protector: How a Residual Current Circuit Breaker Prevents Electrocution](https://www.oohmage.com/how-an-rccb-prevents-electrocution/): Discover how a Residual Current Circuit Breaker protects human life. Learn about its components, operation, and strict electrical safety applications.
- [Electronic RCBO Selection Guide Europe](https://www.oohmage.com/electronic-rcbo-selection-guide-europe/): Discover why modern European infrastructure requires electronic RCBOs (FI/LS). Learn about Type A sensitivities, IEC 61009-1 compliance, and AFDD integration.
- [The “Heavy Load” Industrial Focuse](https://www.oohmage.com/the-heavy-load-industrial-focuse/): Discover how breaking capacity and IEC 60947-2 ratings protect industrial infrastructure. Learn why 8kV Impulse Withstand Voltage (Uimp) prevents downtime.
- [MCCB vs MCB vs ACB vs VCB — Which Circuit Breaker Should You Choose?](https://www.oohmage.com/mcb-vs-mccb-vs-acb-vs-vcb/): MCB, MCCB, ACB, and VCB are all circuit breakers — but they are not interchangeable. Each type is designed for a specific voltage range, current level, and application environment.
- [What Does a Standard Molded Case Circuit Breaker Contain? Key Internal Components Explained](https://www.oohmage.com/what-does-a-standard-mccb-contain/): In this guide, we break down the key components a standard MCCB contains and explain how each one affects overall performance.
- [MCCB Selection Guide: How to Choose Trip Units, Frame Size, and Interrupt Rating](https://www.oohmage.com/mccb-selection-guide/): In this guide, we’ll walk through a practical, step-by-step MCCB selection process, explain how engineers coordinate protection, and highlight common mistakes that lead to failure in real installations.
- [What Is the Difference Between GFCI and RCBO? Which One Should You Use?](https://www.oohmage.com/gfci-vs-rcbo/): GFCI and RCBO both prevent electric shock — but they are not the same device.
- [How Can I Tell If a Breaker Has Gone Bad? Warning Signs, Quick Checks, and When to Call a Pro](https://www.oohmage.com/how-to-tell-if-a-circuit-breaker-has-gone-bad/): How to tell if a circuit breaker has gone bad, start with this: a bad breaker often trips under normal loads, won’t reset, feels hot, smells burnt, shows discoloration/melted plastic, or makes buzzing/crackling noises.
- [Can an MCCB Be Repaired? What’s Repairable, What’s Not, and How to Return to Service Safely](https://www.oohmage.com/can-an-mccb-be-repaired/): Your MCCB stopped working.
- [How Often Should a Molded Case Circuit Breaker Be Exercised? (Standards & Best Practices)?](https://www.oohmage.com/how-often-should-mccb-be-exercised/): Most molded case circuit breakers should be exercised every 1 to 3 years. The right interval depends on two things: how critical the circuit is and how harsh the environment is.
- [Can MCCBs Be Reconditioned? What’s Possible, What’s Not, and When Replacement Is Safer](https://www.oohmage.com/can-mccbs-be-reconditioned/): Can MCCBs be reconditioned? Yes—but only within strict limits.
- [How Do You Test an MCCB? Methods, Standards, and What Each Test Tells You](https://www.oohmage.com/how-to-test-an-mccb/): You test an MCCB by measuring insulation, contact resistance, and trip operation using the right method for your symptoms, risk level, and outage constraints.
- [How to Check if an MCCB Is Faulty: Symptoms, Quick Checks, and When to Use Electrical Testing](https://www.oohmage.com/how-to-check-if-an-mccb-is-faulty/): In this guide, we’ll show you how to check if an MCCB is faulty using symptom patterns, safe on-site checks, and clear rules for when electrical testing is necessary—so you can decide whether to fix the system, replace the breaker, or leave it alone with confidence.
- [How to Diagnose and Address a Circuit Breaker That Keeps Tripping?](https://www.oohmage.com/circuit-breaker-keeps-tripping-diagnosis-guide/): If a circuit breaker keeps tripping, it’s not random—and it’s not a nuisance. It means your electrical system is repeatedly operating outside safe limits, and the breaker is doing exactly what it’s designed to do: stop damage before it gets worse.
- [AC vs DC Contactors: Key Differences, Applications, and Selection Tips](https://www.oohmage.com/ac-contactor-vs-dc-contactor/): AC and DC contactors are not interchangeable. Choosing the wrong type can lead to excessive arcing, contact welding, shortened service life, or even system failure.
- [Voltage Protector vs. Surge Protector: Key Differences and Applications](https://www.oohmage.com/voltage-protector-vs-surge-protector/): Sudden power problems do not damage electrical equipment in the same way. Some failures come from long-term voltage instability, while others happen in a split second due to high-energy surges. That’s exactly why a voltage protector and a surge protector serve different purposes—and why using the wrong one can still leave your equipment exposed.
- [How to Select the Right Circuit Breaker for Commercial and Industrial Applications?](https://www.oohmage.com/how-to-select-the-right-circuit-breaker/): Choosing the right circuit breaker starts with your system—not the catalog.
- [How to Safely Reset a Tripped Molded Case Circuit Breaker?](https://www.oohmage.com/how-to-reset-a-tripped-molded-case-circuit-breaker/): To safely reset a tripped molded case circuit breaker, you must first move the handle fully to OFF, identify why it tripped, and only then switch it back to ON.
- [Molded Case Circuit Breaker (MCCB) Maintenance: What to Do, How Often, and What to Avoid](https://www.oohmage.com/molded-case-circuit-breaker-maintenance/): In this guide, we’ll walk you through what the molded case circuit breaker maintenance actually involves, how often it should be done, how to prepare safely, and the mistakes that turn routine inspections into serious hazards.
- [What Is an MCCB? Meaning, Ratings & Selection Guide](https://www.oohmage.com/what-is-an-mccb/): An MCCB, or molded case circuit breaker, is an overcurrent protective device used in low-voltage power distribution. It opens a circuit automatically when its trip unit detects an overload or short-circuit condition within the device’s declared operating characteristics.
- [What is the kA Rating on a Circuit Breaker? (Breaking Capacity Explained)](https://www.oohmage.com/ka-rating-circuit-breaker-explained/): The kA rating on a circuit breaker refers to its breaking capacity, also called interrupting capacity. In simple terms, it tells you how much short-circuit current the breaker can safely interrupt without failing.

## Products
- [OMi8X Series RCBO Residual Current Circuit Breaker with Overcurrent Protection](https://www.oohmage.com/residual-current-operated-circuit-breaker/omi8x-series-rcbo/): OMi8X 1P+N RCBO with accessible test control for panel integration, final circuits and project supply.
- [OME8 Series Electronic RCBO Residual Current Circuit Breaker with Overcurrent Protection](https://www.oohmage.com/residual-current-operated-circuit-breaker/ome8-series-electronic-rcbo/): OME8 electronic 1P+N RCBO for residual-current, overload and short-circuit protection in final circuits.
- [OMB8 Series RCBO Residual Current Circuit Breaker with Overcurrent Protection](https://www.oohmage.com/residual-current-operated-circuit-breaker/omb8-series-rcbo/): OMB8 1P+N RCBO for project, wholesale and OEM distribution-board supply with model-level selection support.
- [OMR8 Series RCBO Residual Current Circuit Breaker with Overcurrent Protection](https://www.oohmage.com/residual-current-operated-circuit-breaker/omr8-series-rcbo/): OMR8 compact 1P+N RCBO for residual-current, overload and short-circuit protection in distribution boards.
- [OML8N Series RCCB Residual Current Circuit Breaker 16A–80A](https://www.oohmage.com/residual-current-circuit-breaker/oml8n-rccb/): OML8N RCCB is designed for earth-leakage protection in single-phase AC systems, supporting 1P+N configuration, multiple sensitivities, and rated voltages up to 240V.
- [OML8E Series RCCB Residual Current Circuit Breaker 16A–63A](https://www.oohmage.com/residual-current-circuit-breaker/oml8e-rccb/): OML8E RCCB provides electronic earth-leakage protection for AC systems, supporting multiple sensitivities, 1P+N and 3P+N poles, and rated voltages up to 415V.
- [OML8B Series RCCB Residual Current Circuit Breaker 16A–80A](https://www.oohmage.com/residual-current-circuit-breaker/oml8b-rccb/): OML8B RCCB provides earth-leakage protection for AC systems, supporting advanced protection classes, multiple sensitivities, 1P+N and 3P+N poles, and voltages up to 415V.
- [OML8X Series RCCB Residual Current Circuit Breaker 16A–80A](https://www.oohmage.com/residual-current-circuit-breaker/oml8x-rccb/): OML8X RCCB provides earth-leakage protection for AC systems, supporting 1P+N and 3P+N configurations, multiple sensitivity levels, and rated voltages up to 415V.
- [OML8 Series RCCB Residual Current Circuit Breaker 16A–80A](https://www.oohmage.com/residual-current-circuit-breaker/oml8-rccb/): OML8 Residual Current Circuit Breaker for 230–415V, 50/60Hz networks provides AC/A/Asi earth-leakage protection with 30–300mA sensitivity for panels and feeders.
- [OMC8X Series DC Miniature Circuit Breaker 1A–63A 500V DC](https://www.oohmage.com/miniature-circuit-breaker/omc8x-dc-mcb/): OMC8X DC miniature circuit breaker is designed for DC circuit overload and short-circuit protection, supporting 1P/2P configurations, multiple tripping curves, and rated voltages up to 500V DC.
- [OMC8X Series Miniature Circuit Breaker 1A–63A 230/400V AC](https://www.oohmage.com/miniature-circuit-breaker/omn8x-ac-mcb/): OMC8X miniature circuit breaker is designed for AC circuit overload and short-circuit protection, supporting multiple pole options, B/C/D curves, and rated voltages up to 415V.
- [OMC8-DC Series Miniature Circuit Breaker 1A–63A 500V DC](https://www.oohmage.com/miniature-circuit-breaker/omc8-dc-mcb/): OMC8-DC miniature circuit breaker provides DC overload and short-circuit protection, supporting 1P/2P configurations, 1A–63A current ratings, and stable operation in DC systems up to 500V.
- [OMC8 Series Miniature Circuit Breaker 1A–63A 230/400V AC](https://www.oohmage.com/miniature-circuit-breaker/omc8-ac-mcb/): OMC8 Series Miniature Circuit Breaker provides overload and short-circuit protection for low-voltage AC circuits, supporting multiple pole options, B/C/D curves, and breaking capacities up to 15kA.
- [DC6-EY lot Intelligent Control Module](https://www.oohmage.com/molded-case-circuit-breaker/dc6-ey-lot-intelligent-control-module/): Small volume
- [DC6 Remote internet  operation module](https://www.oohmage.com/molded-case-circuit-breaker/dc6-remote-internet-operation-module/): Small volume
- [ECB Cost control  Molded Case  Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/ecb-cost-control-molded-case-circuit-breaker/): Remote control
- [ECB RJ45 Network  Interface Type](https://www.oohmage.com/molded-case-circuit-breaker/ecb-rj45-network-interface-type/): RJ45 network interface type
- [OMM6EY Intelligent Measurement Circuit Breaker  (Southern Power Grid  dedicated)](https://www.oohmage.com/molded-case-circuit-breaker/omm6ey-intelligent-measurement-circuit-breaker-southern-power-grid-dedicated/): Southern Power Grid Dedicated Series
- [OMM6EY-LC Intelligent Measurement  Circuit Breaker (State Grid dedicated)](https://www.oohmage.com/molded-case-circuit-breaker/omm6ey-lc-intelligent-measurement-circuit-breaker-state-grid-dedicated/): State Grid Dedicated Series
- [OMM7E Three-phase  Unbalanced Phasechange switch](https://www.oohmage.com/molded-case-circuit-breaker/omm7e-three-phase-unbalanced-phasechange-switch/): Remote control
- [OMM7E Phase-change  Transfer Switch](https://www.oohmage.com/molded-case-circuit-breaker/omm7e-phase-change-transfer-switch/): Remote control
- [OMM6EY Intelligent Four Remote Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6ey-intelligent-four-remote-circuit-breaker/): Small volume New design Complete vspecifications Measurement function
- [OMM6LE IoT Reclosing Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6le-iot-reclosing-circuit-breaker/): Remote control Power metering statistics Early warning protection Fault location
- [OMM7LE Residual Current Operated Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm7le-residual-current-operated-circuit-breaker/): Cost control function Communication function Small volume Metering function
- [OMM6LE Residual Current Operated Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6le-residual-current-operated-circuit-breaker/): Remote control Residual current leakage protection Cost control function Chinese-English shift
- [OMM6ZY IoT Intelligent  Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6zy-iot-intelligent-circuit-breaker/): Complete specifications Data acquisition Communication function Modular design
- [OMM6ZY IoT Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6zy-iot-circuit-breaker/): Quick opening and closing Electricity measurement Multiple communication interfaces Four segment protection
- [OMM6EY Intelligent Measurement Four Remote  Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6ey-intelligent-measurement-four-remote-circuit-breaker/): Four Telecontrol Functions New design Dedicated carrier module Electricity metering function
- [OMM7DC-320 New Energy DC  Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm7dc-320-new-energy-dc-circuit-breaker/): No capacity reduced at +50℃ Zero arc Conform to UL489 standard Non-polarity
- [OMM7E New Energy Electronic Molded Case Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm7e-new-energy-electronic-molded-case-circuit-breaker/): Convenient and fast Green and eco-friendly Modular internal accessory Height voltage locations
- [OMM7-320 New Energy High  Voltage Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm7-320-new-energy-high-voltage-circuit-breaker/): High Breaking Capacity No capacity reduced at +50℃ Modular internal accessory Zero arc
- [OMM6ELY Electronic Leakage LCD Molded Case  Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6ely-electronic-leakage-lcd-molded-case-circuit-breaker/): Dedicated for Southern Power Grid Green and eco-friendly Residual current protection function Support remote communication
- [OMM6LY Thermomagnetic Residual Current Molded Case Circuit Breaker MCCB](https://www.oohmage.com/molded-case-circuit-breaker/omm6ly-thermomagnetic-residual-current-molded-case-circuit-breaker/): Thermomagnetic protection function Green and eco-friendly Residual current protection function Residual current alarm without trip function optional
- [OMM6EY Electronic Molded  Case Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6ey-electronic-molded-case-circuit-breaker/): Precise measurement Full-range Protection Real-time display Complete specifications
- [OMM6E Electronic Molded  Case Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6e-electronic-molded-case-circuit-breaker/): Small volume Low temperature rise Precise protection Complete specifications
- [OMM6LY Thermomagnetic  Adjustable Residual  Current Circuit Breaker](https://www.oohmage.com/molded-case-circuit-breaker/omm6ly-thermomagnetic-adjustable-residual-current-circuit-breaker/): Thermomagnetic protection function
- [OMM6RT Thermomagnetic Dual Adjustable Circuit Breaker MCCB](https://www.oohmage.com/molded-case-circuit-breaker/omm6rt-thermomagnetic-dual-adjustable-mccb/): Adjustable Thermal and Magnetic Protection High Breaking Capacity Wide Current Range Multiple Pole Configurations Low Temperature Rise Compact Design Long Mechanical and Electrical Life
- [OMM6 Thermomagnetic Molded Case Circuit  Breaker MCCB](https://www.oohmage.com/molded-case-circuit-breaker/omm6-thermomagnetic-mccb/): Small Volume, Big Protection Dual Protection Technology Compliance with International Standards Cost-Effective Protection
- [OMYT80-AC T2 AC SPD AC Surge Protective Devices](https://www.oohmage.com/mini-surge-protector/omyt80-ac-t2-ac-spd/): Type 2 Surge Protection Nominal Discharge Current : 40kA Maximum Discharge Current : 80kA Varistor Voltage Limiting Technology Low Residual Voltage Design Pluggable Design Internal Thermal Disconnection Devices Status Indicators Remote Signal Option
- [OMDN60-AC Outdoor Type 2 Surge Protective Device Supplier](https://www.oohmage.com/outdoor-surge-protector/omdn60-ac-t2-ac-spd/): OOHMAGE manufactures and supplies OMDN60-AC Outdoor Type 2 AC surge protective device (SPD) series for project applications where buyers need outdoor Type 2 AC SPD model confirmation. Buyers can confirm protection type, poles, quantity, packaging and document requirements before quotation. Outdoor Type 2 AC SPD selection Low-voltage surge protection B2B order support Packaging discussion Certification and technical document communication
- [OMDN40-AC Outdoor Type 2 SPD Manufacturer & Supplier](https://www.oohmage.com/outdoor-surge-protector/omdn40-ac-t2-ac-spd/): OOHMAGE manufactures and supplies OMDN40-AC Outdoor Type 2 AC surge protective device (SPD) series for outdoor panels, distribution boards and project-based low-voltage AC surge protection needs. Buyers can confirm protection type, poles, quantity, packaging and document requirements before quotation. Outdoor Type 2 AC SPD selection Low-voltage surge protection B2B order support Packaging discussion Certification and technical document communication
- [OMDN20-AC T2+T3 AC SPD AC Surge Protective Devices](https://www.oohmage.com/outdoor-surge-protector/omdn20-ac-t2t3-ac-spd/): ✔ Type 2+3 Surge Protection✔ 10kA Nominal Discharge Current (In)✔ 20kA Maximum Discharge Current (Imax)✔ MOV (Metal Oxide Varistor) Technology✔ Low Residual Voltage Design✔ Thermal Disconnection Mechanism✔ Pluggable Design✔ Status Indicator (Green/Red LED)✔ Remote Signaling Option✔ DIN Rail Mountable (35mm)✔ Global Standard Compliance✔ Certified for Safety & Quality
- [OMDH7-AC Outdoor Type 1+2 SPD Manufacturer & Supplier](https://www.oohmage.com/outdoor-surge-protector/omdh7-ac-t1t2-ac-spd/): OOHMAGE manufactures and supplies OMDH7-AC Outdoor Type 1+2 AC surge protective device (SPD) series for outdoor AC distribution and project applications requiring Type 1+2 SPD discussion. Buyers can confirm protection type, poles, quantity, packaging and document requirements before quotation. Outdoor Type 1+2 AC SPD selection Low-voltage surge protection B2B order support Packaging discussion Certification and technical document communication
- [OMDH12.5-AC T1+T2 AC SPD AC Surge Protective Devices](https://www.oohmage.com/outdoor-surge-protector/omdh12-5-ac-t1t2-ac-spd/): ✔ Type 1+2 Surge Protection ✔ High Surge Capacity ✔ Varistor Voltage Limiting Technology ✔ Low Residual Voltage Design✔ Thermal Disconnection for Safety✔ Pluggable Design✔ LED Status Indicators✔ Remote Signal Monitoring✔ Compact & Durable✔ Certified & Compliant
- [OMDN40-DC T2 DC SPD DC Surge Protective Devices](https://www.oohmage.com/dc-surge-protection-device/omdn40-dc-t2-dc-spd/): ✔ Type 2 Surge Protection ✔ 20kA Nominal Discharge Current (In)✔ 40kA Maximum Discharge Current (Imax)✔ MOV Technology✔ Low Residual Voltage Design✔ Pluggable Design with Thermal Disconnection✔ Status Indication (Green/Red LED)✔ Remote Signaling Option✔ DIN Rail Mountable (35mm)✔ Global Standards Compliance✔ Certified for International Safety
- [OMDH6.25-DC T1+T2 DC SPD DC Surge Protective Devices](https://www.oohmage.com/dc-surge-protection-device/omdh6-25-dc-t1t2-dc-spd/): ✔ Comprehensive Type 1+2 Protection✔ High Surge Handling Capacity✔ Metal Oxide Varistor (MOV) Technology✔ Low Residual Voltage Design✔ Thermal Disconnection for Safety✔ Remote Monitoring Option✔ Compact DIN Rail Surge Protector✔ Certified Compliance
- [OMDH9-DC T2 DC SPD DC Surge Protective Devices](https://www.oohmage.com/dc-surge-protection-device/omdh9-dc-t2-dc-spd/): ✔ Type 1+2 DC Surge Protection✔ MOV Technology✔ 20kA Nominal Discharge Current ✔ 50kA Maximum Discharge Current ✔ Impulse Discharge Current (Iimp): Up to 12.5kA✔ Low Residual Voltage✔ Pluggable Design✔ Thermal Disconnection Device✔ Remote Signal Option✔ DIN Rail Mounting (35mm)✔ Compliant with Global Standards✔ Certified for Quality and Reliability
- [OMYCN100-AC T2 AC SPD AC Surge Protective Devices](https://www.oohmage.com/high-capacity-surge-protector/omycn100-ac-t2-ac-spd/): Type 2 Surge Protection MOV Technology 50kA Nominal Discharge Current Low Residual Voltage Pluggable Design Thermal Disconnection Device IEC 61643-11 Compliance Remote Signal Option DIN Rail Mount Voltage Protection Level Certifications
- [OMYCN80-AC T2 AC SPD AC Surge Protective Devices](https://www.oohmage.com/high-capacity-surge-protector/omycn80-ac-t2-ac-spd/): Type 2 Surge Protection 40kA Nominal Discharge Current MOV Technology Pluggable Design Thermal Disconnection Device Voltage Protection Level (Up) Remote Signal DIN Rail Mount TOV Testing Certifications
- [OMYCH25-AC Type 1+2 Surge Protective Device Manufacturer & Supplier](https://www.oohmage.com/surge-protection-device/omych25-ac-t1-t2-ac-spd/): OOHMAGE manufactures and supplies OMYCH25-AC Type 1+2 AC surge protective device (SPD) series for AC low-voltage systems where project buyers need Type 1 and Type 2 protection discussion. Buyers can confirm protection type, poles, quantity, packaging and document requirements before quotation. Type 1+2 AC SPD selection Low-voltage surge protection B2B order support Packaging discussion Certification and technical document communication

## Categories
- [Circuit Breakers](https://www.oohmage.com/category/circuit-breakers/)
- [Electrical Enclosure](https://www.oohmage.com/category/electrical-enclosure/)
- [Electrical Guide](https://www.oohmage.com/category/electrical-guide/)
- [Electrical Knowledge](https://www.oohmage.com/category/electrical-knowledge/)
- [Solar Energy System](https://www.oohmage.com/category/solar-energy-system/)
- [Surge Protection Device](https://www.oohmage.com/category/surge-protection-device/)

## Product categories
- [Circuit Protection](https://www.oohmage.com/electric-protection-devices/)
- [Power Distribution & Control](https://www.oohmage.com/electrical-control-device/)
- [Solar & DC Products](https://www.oohmage.com/solar-electrical-devices/)
- [Surge Protective Device (SPD)](https://www.oohmage.com/surge-protection-device/)
- [Intelligent Circuit Breaker](https://www.oohmage.com/intelligent-circuit-breaker-electric-protection-devices/)
- [MCCB](https://www.oohmage.com/molded-case-circuit-breaker/)
- [Fuse](https://www.oohmage.com/fuse/)
- [MPCB](https://www.oohmage.com/motor-protection-circuit-breaker/)
- [MCB](https://www.oohmage.com/miniature-circuit-breaker/)
- [MCB Accessories](https://www.oohmage.com/mcb-accessories/)
- [RCBO](https://www.oohmage.com/residual-current-operated-circuit-breaker/)
- [RCCB](https://www.oohmage.com/residual-current-circuit-breaker/)
- [AC Contactor](https://www.oohmage.com/ac-contactor/)
- [Automatic Transfer Switch (ATS)](https://www.oohmage.com/automatic-changeover-switch/)
- [Delay Timer](https://www.oohmage.com/delay-timer/)
- [Distribution Box](https://www.oohmage.com/distribution-box/)
- [Isolator Switch](https://www.oohmage.com/isolation-switch/)
- [Push button Switch](https://www.oohmage.com/push-button-switch/)
- [Thermal Overload Relay](https://www.oohmage.com/thermal-overload-relay/)
- [Modular Contactor](https://www.oohmage.com/modular-contactor/)
- [Voltage Protector](https://www.oohmage.com/voltage-protector/)
- [High-Capacity Surge Protector](https://www.oohmage.com/high-capacity-surge-protector/)
- [Mini Surge Protector](https://www.oohmage.com/mini-surge-protector/)
- [Outdoor Surge Protector](https://www.oohmage.com/outdoor-surge-protector/)
- [Combiner Box](https://www.oohmage.com/combiner-box/)
- [DC Circuit Breaker](https://www.oohmage.com/dc-circuit-breaker/)
- [DC Fuse](https://www.oohmage.com/dc-fuse/)
- [DC Isolator Switch](https://www.oohmage.com/dc-isolator-switch/)
- [DC SPD](https://www.oohmage.com/dc-surge-protection-device/)
- [Solar Connector](https://www.oohmage.com/solar-connector/)