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K1-1P320-M Mersen Surge Protector Type 1+2 SPD 1 Pole 277 Volt 20KA L-N Remote Indication
Mersen K1-1P320-M Type 1+2 pluggable surge protection device with integrated remote signalling contact for 277 V AC systems.
£77.95
Why Choose the Mersen K1-1P320-M Type 1+2 Surge Protection Device?
The Mersen K1-1P320-M, product code 44120107, is a premium Type 1+2 Surge Protection Device (SPD) designed to protect low-voltage electrical installations against lightning-induced surges and transient overvoltages. As part of the Mersen Surge-Trap® K1 Series, it combines Type 1 and Type 2 protection within a compact pluggable module and incorporates an integrated remote signalling microswitch for continuous status monitoring.
Designed for 277 V AC single-phase systems, the K1-1P320-M features a 1+0 protection configuration, a maximum continuous operating voltage (Uc) of 320 V AC, and a replaceable cartridge that simplifies maintenance. The remote signalling contact enables connection to building management systems (BMS), PLCs or alarm circuits for immediate notification if the protection module requires replacement.
With a 12.5 kA lightning impulse current (Iimp), 50 kA maximum discharge current (Imax), 20 kA nominal discharge current (In), and a voltage protection level (Up) of ≤1.5 kV, the K1-1P320-M provides dependable protection for sensitive electrical equipment while meeting IEC 61643-11 requirements.
Key Advantages
- Combined Type 1 + Type 2 surge protection.
- Integrated remote signalling contact for monitoring device status.
- Designed for 277 V AC single-phase systems.
- Pluggable cartridge enables fast maintenance.
- 12.5 kA lightning impulse current (Iimp).
- 50 kA maximum discharge current (Imax).
Key Features
- Manufacturer: Mersen
- Series: Surge-Trap® K1
- Model: K1-1P320-M
- Product code: 44120107
- SPD Type: IEC Class I + II (Type 1+2)
- Configuration: 1+0 (L-N)
- Integrated microswitch for remote signalling.
- Visual operating status indicator.
Reliable Surge Protection with Remote Monitoring
Type 1+2 surge protection devices safely divert lightning currents and transient overvoltages away from sensitive electrical equipment before damage can occur. They provide the first level of protection within the main distribution board, helping to improve system reliability and minimise costly downtime.
The integrated remote signalling microswitch allows facility managers and maintenance teams to monitor the operational status of the SPD remotely via building management systems or PLCs, enabling rapid maintenance should the protection cartridge require replacement.
Typical Applications
- Main electrical distribution boards.
- Industrial control panels.
- Commercial buildings.
- Building management systems (BMS).
- Data centres.
- Telecommunications equipment.
- Solar photovoltaic installations.
- Battery energy storage systems.
- EV charging infrastructure.
Technical Specifications
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| Impulse Current Iimp (kA) | 12.5 kA | |
|---|---|---|
| Voltage | 277 V | |
| Phase | Single Phase | |
| Device Type | Surge protection device | |
| SPD Type | Type 1+2 | |
| Earthing System | TN-C, TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® K1 | |
| Model | K1-1P320-M | |
| Product code | 44120107 | |
| EAN | 8435297888048 | |
| Product type | Type 1+2 Surge Protection Device | |
| IEC SPD classification | Class I + II | |
| UL classification | Type 1 Component Assembly | |
| System configuration | TN-S, TN-C, TT | |
| Nominal voltage (Un) | 277 V AC | |
| Maximum continuous operating voltage (Uc) | 320 V AC | |
| Lightning impulse current (Iimp 10/350 μs) | 12.5 kA | |
| Nominal discharge current (In 8/20 μs) | 20 kA | |
| Maximum discharge current (Imax 8/20 μs) | 50 kA | |
| Voltage protection level (Up) | ≤1.5 kV | |
| Remote indication | Integrated microswitch | |
| Mounting | 35 mm DIN rail | |
| Module type | Pluggable | |
| Status indication | Visual and remote | |
| Flammability rating | UL94 V-0 | |
| Width | 18 mm | |
| Height | 90 mm | |
| Depth | 90.4 mm | |
| Weight | Approx. 0.178 kg | |
| RoHS compliant | Yes | |
| Applicable standard | IEC 61643-11 |
Frequently Asked Questions
What is the Mersen K1-1P320-M used for?
It protects single-phase low-voltage electrical installations against lightning currents and transient overvoltages while providing remote status monitoring.
What is the difference between the K1-1P320 and K1-1P320-M?
The K1-1P320-M includes an integrated remote signalling microswitch, allowing the operating status of the surge protection device to be monitored remotely.
What is the maximum continuous operating voltage?
The K1-1P320-M is designed for systems with a maximum continuous operating voltage of 320 V AC.
Can the surge protection module be replaced?
Yes. The device features a pluggable protection cartridge that can be replaced without removing the DIN rail base.
Where is this SPD typically installed?
It is typically installed within the main electrical distribution board of industrial, commercial and infrastructure installations requiring monitored surge protection.
Trusted for Professional Surge Protection
Mersen Surge-Trap® K1 Series surge protection devices are trusted by electrical engineers, contractors and panel builders for dependable protection against lightning and transient overvoltages, with optional remote monitoring for critical installations.
