Mersen K1-2P275 Type 1+2 surge protection device with 275 V AC operating voltage, 12.5 kA lightning impulse current and pluggable DIN rail design for TNS electrical installations.
£165.20
The Mersen 44120204 K1-2P275 is a robust Type 1+2 Surge Protection Device (SPD) designed to safeguard low-voltage electrical installations against lightning strikes and transient overvoltages. Part of the proven Mersen Surge-Trap® K - K1 Series, this pluggable SPD delivers dependable protection for commercial, industrial and infrastructure applications requiring reliable surge suppression.
Designed for installation within the main distribution board, the K1-2P275 combines a compact DIN rail mounted format with high surge discharge capability. Its pluggable construction simplifies maintenance, reducing downtime and allowing rapid replacement when required.
With a 275 V AC maximum continuous operating voltage (Uc), 2+0 protection configuration and a 12.5 kA lightning impulse current (Iimp), the K1-2P275 provides effective first-line protection for TNS electrical systems and helps extend the service life of valuable electrical equipment.
The Mersen K1-2P275 diverts high-energy surge currents away from sensitive electrical equipment, helping prevent costly damage caused by lightning strikes and switching transients. Installing a quality surge protection device improves system reliability while reducing maintenance costs and equipment downtime.
Its compact pluggable construction and high surge current capability make the K1-2P275 well suited to industrial control panels, commercial buildings, infrastructure projects and electrical distribution systems requiring dependable surge protection.
| Voltage | 230 V |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® K - K1 Series |
| Model | K1-2P275 |
| Part Number | 44120204 |
| 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 |
| Number of poles | 2 |
| System compatibility | TNS |
| Protection level (Up) | ≤1.5 kV |
| Mounting type | DIN rail |
| Format | Pluggable |
| Protection rating | IP20 |
| Dimensions (H × W × D) | Approx. 90 × 36 × 90 mm |
| Weight | Approx. 0.27 kg |
It protects low-voltage electrical installations from lightning strikes and transient overvoltages using Type 1+2 surge protection.
The K1-2P275 is designed for use on TNS electrical distribution systems.
The device has a 275 V AC maximum continuous operating voltage (Uc).
The unit provides a lightning impulse current rating of 12.5 kA, a nominal discharge current of 20 kA and a maximum discharge current of 50 kA.
The K1-2P275 is supplied in a compact pluggable housing for installation onto a standard DIN rail inside an electrical distribution board.
Mersen Surge-Trap® K Series surge protection devices are trusted worldwide by electrical engineers and contractors for delivering dependable protection against lightning and transient overvoltages in critical electrical installations.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...