Description
The OOHMAGE MDH9 Series DC SPD Surge Protection Device provides superior protection for DC electrical systems, ensuring that sensitive equipment is safeguarded from voltage spikes, power surges, and lightning strikes. With a nominal discharge current of 20kA and a maximum discharge current of 50kA, the MDH9 series is an ideal solution for photovoltaic systems, battery storage setups, and industrial DC circuits. Engineered with Metal Oxide Varistor (MOV) protection, this Type 1+2 DC SPD is built to withstand extreme surge events, ensuring long-term power system reliability.
Features
✔ Type 1+2 DC Surge Protection Device – Offers comprehensive surge suppression against direct lightning strikes and indirect electrical surges in DC power systems.
✔ Advanced Metal Oxide Varistor (MOV) Protection – Provides efficient overvoltage protection, rapidly suppressing surge energy and ensuring low residual voltage.
✔ 20kA Nominal Discharge Current – Ensures effective surge protection, preventing electrical damage in solar power systems and industrial applications.
✔ 50kA Maximum Discharge Current – Handles severe surge events, maintaining system stability and equipment longevity.
✔ Impulse Discharge Current (Iimp): Up to 12.5kA – Protects against high-energy transient surges, keeping DC circuits secure.
✔ Low Residual Voltage Design – Reduces post-surge voltage levels, safeguarding sensitive DC equipment from overvoltage damage.
✔ Pluggable DIN Rail DC SPD – Easy to install and maintain, with a pluggable design that allows quick replacement of protection modules.
✔ Built-in Thermal Disconnection Device – Ensures safe disconnection in the event of overheating, preventing further damage.
✔ Remote Signal Option – Supports real-time surge monitoring, enhancing system control.
✔ DIN Rail Mounting (35mm) – Allows for quick and secure installation in electrical panels.
✔ Certified for Global Standards – Meets IEC 61643-31, EN 61643-31, and GB/T 18802.31 safety regulations.
✔ Reliable & High-Quality Build – Certified by TUV, CE, UKCA, CB, RoHS, and REACH, ensuring dependable surge protection for industrial and residential applications.
Why Choose OOHMAGE?
✔ Industry-Leading Surge Protection Manufacturer – OOHMAGE is a trusted surge protection manufacturer known for high-performance, durable surge protective devices.
✔ Bulk Pricing & Wholesale Availability – We offer cost-effective bulk surge protection device solutions for solar, battery storage, and industrial applications.
✔ Trusted Quality & Compliance – Fully certified under IEC 61643-31, EN 61643-31, and global safety standards (TUV, CE, UKCA, CB, RoHS, and REACH).
✔ Reliable & Efficient – Designed for fast, easy installation, reducing maintenance time and operational disruptions.
Specifications
Technical Data | |||||
Model | MDH9-DC600 | MDH9-DC800 | MDH9-DC1000 | MDH9-DC1200 | MDH9-DC1500 |
SPD Type | Type 1+2 | ||||
Technology | MOV (Metal Oxide Varistors) | ||||
Max. continuous operating voltage [Ucpv] | 600Vdc | 800Vdc | 1000Vdc | 1200Vdc | 1500Vdc |
Nominal discharge curent(8/20us) [ln] | 20kA | ||||
Max.discharge current (8/20us) [lmax] | 40KA | ||||
Impulse Discharge Current(10/350us) [limp] | 12.5kA | 12.5kA | 9kA | 6.25kA | 6.25kA |
Impulse Discharge Current(10/350us) [ltotal] | 25kA | 25kA | 18kA | 12.5A | 12.5kA |
Voltage Protection level [Up] | ≤2.6kV | ≤3.2kV | ≤3.8kV | ≤4.5kV | ≤5.2kV |
Short-circuit current rating [Isccr] | 25kA | ||||
Response time [tA] | ≤25ns | ||||
Thermal Disconnection Device | Insertion | ||||
Max. Backup Fuse | 125A gL/gG FUSE | ||||
Mechanical Data | |||||
SPD Type | Type 1+2 | ||||
SPD configuration | DC system | ||||
Plugable | Available | ||||
Mounting | 35mm DIN rail | ||||
Enclosure Material | Thermoplastic,conform to UL94 V-0 | ||||
0perating Temperature Range | -40°C…-80°C | ||||
Protection rating | IP20 | ||||
Normal/fault Display | Green / Red | ||||
Remote Signal | Optional | ||||
Wiring for remote signaling | Max.1.5mm solid/flexible | ||||
Max.Voltage / Current for remote signaling | 250V/0.1A;125V/0.2A;75V/0.5A | ||||
Standards | IEC/EN 61643-11,GB/T 18802.31 | ||||
Certificate | TUV,CE,UKCA,CB,IEC,RoHS,REACH,CQC | ||||
Packing Data | |||||
3Pole | 3+0/3P | ||||
Weight (1 piece) | 450g | ||||
Package Quantity | 36 PCS/CTN | ||||
CTN Size | 35.8*31*18cm | ||||
Certification
What kind of environments is the surge protector suitable for?
The surge protective devices are rated for IP20 protection, making them suitable for indoor use in environments with low exposure to dust and moisture. They can operate in temperatures from -40°C to +85°C, ensuring performance in diverse conditions.
What is the response time of the surge protective device?
The SPD offers an extremely fast response time of ≤25ns, ensuring your DC systems are protected from instantaneous surges and that the devices respond almost immediately to any surge event.
What is the installation process for the surge protective device?
The surge protectors are designed for easy installation on a 35mm DIN rail and feature screw terminal wiring for conductors between 2.5–25mm², simplifying the connection process for both industrial and residential applications.
How do the surge protectors protect against lightning strikes?
The SPD has a lightning impulse current rating of up to 12.5kA for 10/350μs, which helps protect against lightning strikes and large surges, diverting harmful currents safely away from your electrical equipment.
What is the maximum voltage the SPD can handle?
The SPD can handle a maximum continuous operating voltage of 600Vdc to 1500Vdc, making it suitable for a wide range of solar power systems and other DC applications.
What is a Type 1+2 surge protective device?
A Type 1+2 SPD provides both direct lightning strike protection (Type 1) and protection from residual and induced surges (Type 2). The OMYH9 series is designed to protect photovoltaic systems and DC electrical systems from both types of surges.
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