Mersen K1-2P275-M Type 1+2 surge protection device with 275 V AC operating voltage, remote signalling microswitch, 12.5 kA lightning impulse current and pluggable DIN rail design.
£183.37
The Mersen 44120205 K1-2P275-M is a premium Type 1+2 Surge Protection Device (SPD) designed to provide reliable protection against lightning strikes and transient overvoltages in low-voltage electrical installations. As part of the trusted Mersen Surge-Trap® K - K1 Series, this pluggable surge protector combines high surge capacity with integrated remote signalling for continuous system monitoring.
Designed for installation at the main distribution board, the K1-2P275-M helps safeguard sensitive electrical equipment from costly damage caused by transient overvoltages. Its compact DIN rail mounted construction and replaceable pluggable module simplify installation and maintenance, making it ideal for demanding industrial and commercial environments.
With a 275 V AC maximum continuous operating voltage (Uc), 2+0 protection configuration, 12.5 kA lightning impulse current (Iimp) and an integrated remote signalling microswitch, the K1-2P275-M provides dependable first-level surge protection for TNS electrical systems.
The Mersen K1-2P275-M is engineered to divert high-energy surge currents safely to earth before they can damage electrical equipment. This reduces the risk of costly failures, minimises downtime and helps improve the long-term reliability of electrical installations.
Its combination of high surge handling capability, remote monitoring functionality and compact pluggable construction makes it an excellent choice for industrial automation, commercial buildings and critical infrastructure applications.
| Voltage | 230 V |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® K - K1 Series |
| Model | K1-2P275-M |
| Part Number | 44120205 |
| Product type | Type 1+2 Surge Protection Device (SPD) |
| IEC SPD Type | Class I+II |
| UL SPD Type | Type 1 Component Assembly |
| Maximum continuous operating voltage (Uc) | 275 V AC |
| Nominal operating voltage (Un) | 230 V AC |
| Lightning impulse current (Iimp) | 12.5 kA |
| Nominal discharge current (In) | 20 kA |
| Maximum discharge current (Imax) | 50 kA |
| Configuration | 2+0 |
| Network compatibility | TNS |
| Protection level (Up) | ≤1.5 kV |
| Mounting type | DIN rail |
| Format | Pluggable |
| Indication | Green (OK) / Not Green (Replace) with microswitch |
| Protection rating | IP20 |
| Dimensions (H × W × D) | Approx. 90 × 36 × 90 mm |
| Weight | Approx. 0.27 kg |
It protects low-voltage electrical installations against lightning strikes and transient overvoltages using Type 1+2 surge protection.
The K1-2P275-M includes an integrated remote signalling microswitch for remote monitoring of the surge protection device status.
The device is designed for TNS low-voltage electrical distribution systems.
The K1-2P275-M has a maximum continuous operating voltage (Uc) of 275 V AC.
The surge protection device is supplied in a compact pluggable housing for installation onto a standard DIN rail within an electrical distribution board.
Mersen Surge-Trap® K Series surge protection devices are widely specified by electrical engineers and contractors for dependable protection of commercial, industrial and infrastructure electrical installations.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...