Product Features
The G20120MT Type 2 surge protective device is engineered to protect electrical systems from transient overvoltage caused by lightning or switching surges. It features high discharge capacity, low residual voltage, and replaceable plug-in modules for easy maintenance. The flame-retardant housing and thermal disconnector ensure safe and reliable operation in demanding environments.
Technical Parameters
Rated voltage: 230/400V AC; nominal discharge current (In): 20kA; maximum discharge current (Imax): 40kA; voltage protection level (Up): ≤1.5kV. Compact modular design suitable for standard 35mm DIN rail installation. Includes visual indicator for module status and integrated thermal protection for enhanced reliability.
| Parameter | Specification |
|---|---|
| Product Series | G20120MT |
| Type | Type 2 Surge Protective Device |
| Test Standard | EN/IEC 61643-11 (Type 2 / Class 2 / T2 / Class C) |
| Max Continuous Operating Voltage (Uc) | 150V, 280V, 320V, 385V, 440V, 600V, NPE 255V |
| Nominal Discharge Current (In) | 80kA |
| Max Discharge Current (Imax) | 120kA |
| Total Lighting Current (Itotal) | 240kA (L1/N to PE) |
| Voltage Protection Level (Up) | ≤1.8kV to ≤4.0kV (depending on voltage rating) |
| Response Time (ta) | < 25ns |
| Degree of Protection | IP20 |
| Operating Temperature Range | -40ºC to +80ºC |
| Fault Indication | Green (Normal), Red (Invalid) |
| Approvals / Certifications | TUV, CB, CE, IEC, RoHS |
| Pole Options | 1P, 2P, 3P, 4P, 1+NPE, 3+NPE |
Application
The G20120MT series SPD is ideal for low and medium voltage electrical distribution systems, control cabinets, switchboards, and industrial automation panels. It safeguards sensitive devices and circuits in commercial, industrial, and residential power networks against transient surges and lightning-induced damage.
Why Choose Us
We are a trusted surge protection device manufacturer with global export experience. Our SPDs comply with IEC standards, offer OEM/ODM customization, and are available with fast delivery and technical support. We focus on product quality, stable performance, and competitive factory pricing for long-term business cooperation.
FAQ
What is the nominal discharge current for the G20120MT series?
The nominal discharge current is 120kA, suitable for high-energy surge protection in power supply systems.
What is the maximum discharge current these devices can handle?
They support up to 480kA maximum discharge current, depending on the number of poles (1P to 4P).
What is the range of maximum continuous operating voltages?
The devices operate continuously at voltages from 150V to 600V AC, compatible with various power systems.
What voltage protection levels (Up) are provided?
Voltage protection levels range between 1.8kV and 4.0kV, depending on the specific device configuration.
How fast is the response time?
The devices have a fast response time of 25 nanoseconds, allowing prompt suppression of transient surges.
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