Product Description
The OOHMAGE MYH7 Series Type 1+2 AC Surge Protective Device is a high-performance solution for lightning surge protection in residential, commercial, and industrial electrical systems. Designed to handle 20kA nominal discharge current (In) and 50kA maximum discharge current (Imax), this AC surge protector ensures reliable defense against direct lightning strikes and transient voltage surges.
Featuring varistor voltage-limiting technology and a low residual voltage design, the MYH7 Series provides effective suppression of overvoltages, safeguarding sensitive electronic equipment. With an internal thermal disconnection system, this device guarantees safe operation, even under extreme surge conditions.
Designed for easy installation, the MYH7 Series is DIN rail mountable (35mm) and features screw terminal wiring for secure connections. A green/red status indicator provides real-time monitoring of surge protection status. The device complies with IEC 61643-11, EN 61643-11, and GB/T 18802.11 standards, ensuring global safety certification.
Features
✔ Comprehensive Type 1+2 Protection – Defends against direct lightning and indirect transient surges, ensuring electrical system safety.
✔ High Surge Current Handling – 20kA nominal discharge current and 50kA maximum surge capacity for stable, long-term protection.
✔ Varistor Voltage Limiting Technology – Effectively suppresses transient overvoltages, preventing damage to electrical equipment.
✔ Thermal Disconnection Mechanism – Built-in overheat protection ensures safe operation during excessive surge events.
✔ Wide Voltage Compatibility – Available in 275Vac, 320Vac, 385Vac, and 440Vac models, adaptable to various electrical systems.
✔ Compact & Fire-Resistant Design – Constructed with UL94-V0 flame-retardant thermoplastic, offering high durability and heat resistance.
✔ Certified for International Safety Standards – Meets IEC 61643-11, EN 61643-11, and GB/T 18802.11 requirements, with CE, TUV, UKCA, and CB certifications.
Why Choose OOHMAGE MYH7 Series Surge Protective Device?
✔ Reliable Lightning Surge Protection – Ideal for home, commercial buildings, and industrial plants.
✔ Easy Installation & Maintenance – Pluggable module with secure screw terminals.
✔ Globally Certified – Meets IEC 61643-11 and UL standards.
✔ Remote Monitoring (Optional) – Allows for real-time surge protection tracking.
For high-performance AC surge protection, choose the OOHMAGE MYH7 Series—designed for efficiency, durability, and safety.
Parameter
| Type | MYH12.5-275 | MYH12.5-320 | MYH12.5-385 | MYH12.5-440 | ||
| Product Description | Type1+2 Surge Ptotective Device | |||||
| AC Operating Voltage | Un | 230Vac | 230Vac | 230Vac | 230Vac | |
| Maximum Continuous Operating Voltage | Uc | 275Vac | 320Vac | 385Vac | 440Vac | |
| Temporary Overvoltage Test Value TOV-5s[Tolerance] | Ut | 335Vac | 335Vac | 500Vac | 580Vac | |
| Temporary Overvoltage Test Value TOV-120min[Disconnection] | Ut | 440Vac | 440Vac | 650Vac | 770Vac | |
| Nominal Discharge Current(8/20μs) | In | 20kA | ||||
| Maximum Discharge Current(8/20μs) | Imax | 50kA | ||||
| Lightning Impulse Current(10/350μs) | Iimp | 12.5kA | 12.5kA | 9kA | 9kA | |
| Voltage Protection Level | Up | ≤1.5kV | ≤1.6kV | ≤1.8kV | ≤2.0kV | |
| Short-circuit current rating | Isccr | 25kA | ||||
| heat tripping device | Insertion | |||||
| Max. Backup Fuse | 160A~200A gG Fuse | |||||
| Mechanical properties | ||||||
| Product size | see the photo as below | |||||
| Wiring method | screw terminal 2.5-25mm² | |||||
| Normal/Fault display | green/red | |||||
| Maximum remote signal load voltage/current | 250V/0.5A[AC],30V/3A[DC] | |||||
| Maximum cross-sectional area of remote signal connection line | 1.5mm2 | |||||
| Installation | 35mm DIN Rail | |||||
| Operating Temperature range | Tu | -40-+85° | ||||
| Protection level | IP20 | |||||
| Enclosure material | Thermoplastic material, compliant with UL94-V0 | |||||
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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