Mersen K1-1P320-M Type 1+2 pluggable surge protection device with integrated remote signalling contact for 277 V AC systems.
£103.93
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.
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.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| 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 | 1+0 (L-N) |
| 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 |
It protects single-phase low-voltage electrical installations against lightning currents and transient overvoltages while providing remote status monitoring.
The K1-1P320-M includes an integrated remote signalling microswitch, allowing the operating status of the surge protection device to be monitored remotely.
The K1-1P320-M is designed for systems with a maximum continuous operating voltage of 320 V AC.
Yes. The device features a pluggable protection cartridge that can be replaced without removing the DIN rail base.
It is typically installed within the main electrical distribution board of industrial, commercial and infrastructure installations requiring monitored 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.
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