Why Choose the Mersen 44020203 K2-2P275-M Surge Protection Device?
The Mersen 44020203, also identified as the K2-2P275-M, is a high-performance Type 2 surge protection device (SPD) designed to protect single-phase low-voltage electrical installations against transient overvoltages. As part of the proven Mersen Surge-Trap K2 series, it delivers dependable line-to-neutral surge protection with integrated remote signalling, making it ideal for commercial, industrial and infrastructure electrical systems.
Featuring a pluggable protection module, the K2-2P275-M enables quick inspection and cartridge replacement without removing the DIN-rail base. A built-in visual status indicator clearly shows the operating condition, while the integrated microswitch allows remote monitoring through PLCs, building management systems and industrial automation platforms.
With a 230 V AC nominal operating voltage, a 275 V AC maximum continuous operating voltage, a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020203 provides reliable protection against switching transients and lightning-induced surges. Its compact two-module DIN-rail format makes installation straightforward in distribution boards, switchgear and electrical control panels.
Key Advantages
- Reliable Type 2 surge protection for single-phase TN-S electrical systems.
- Integrated remote signalling microswitch for continuous monitoring.
- 50 kA maximum discharge current for robust transient overvoltage protection.
- Pluggable cartridge design enables rapid maintenance and replacement.
- Compact two-module DIN-rail mounting.
- Visual operating status indicator simplifies routine inspection.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- 2+0 internal configuration.
- Two-pole design.
- 230 V AC nominal operating voltage.
- 275 V AC maximum continuous operating voltage.
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Integrated visual status indication and remote signalling microswitch.
- Replaceable pluggable protection cartridges.
- Dynamic thermal disconnection technology.
- DIN-rail mounted compact construction.
Reliable Surge Protection for Industrial Electrical Systems
Transient overvoltages generated by indirect lightning strikes, switching operations and inductive electrical loads can damage PLCs, drives, communication equipment, power supplies and other sensitive electronics. Installing a dedicated Type 2 surge protection device helps reduce equipment failures, minimise downtime and improve long-term electrical system reliability.
The Mersen Surge-Trap K2 range combines high surge current capability, rapid response, replaceable protection cartridges and integrated remote monitoring. These features allow maintenance teams to monitor protection status remotely while ensuring valuable electrical equipment remains protected.
Typical Applications
- Commercial distribution boards.
- Industrial switchgear and electrical control panels.
- Building management systems.
- PLC and automation control cabinets.
- Power supplies and variable speed drives.
- Single-phase TN-S low-voltage electrical installations.
