Why Choose the Mersen 44020209 K2-2PG320-M Surge Protection Device?
The Mersen 44020209, also identified as the K2-2PG320-M, is a high-performance Type 2 surge protection device (SPD) designed to protect single-phase low-voltage electrical installations against transient overvoltages. Part of the trusted Mersen Surge-Trap K2 series, it combines line-to-neutral and neutral-to-earth protection with integrated remote indication, making it ideal for commercial, industrial and infrastructure applications.
The K2-2PG320-M features a pluggable protection module that allows rapid inspection and replacement without removing the DIN-rail base. A visual status indicator clearly displays the operational condition, while the integrated microswitch provides remote signalling to building management systems, PLCs and industrial monitoring equipment.
With a 277 V AC nominal operating voltage, 320 V AC maximum continuous operating voltage (L-N), 20 kA nominal discharge current and 50 kA maximum discharge current, the Mersen 44020209 delivers dependable protection against switching transients and lightning-induced surges. Its compact two-module DIN-rail design allows straightforward installation within distribution boards and electrical control panels.
Key Advantages
- Reliable Type 2 surge protection for single-phase electrical installations.
- Combined L-N and N-PE protection in one compact device.
- 50 kA maximum discharge current for effective surge protection.
- Integrated remote signalling microswitch for condition monitoring.
- Pluggable cartridges simplify servicing and replacement.
- Suitable for TT and TN-S low-voltage electrical systems.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- 1+1 internal configuration.
- Two-pole design.
- 277 V AC nominal operating voltage.
- 320 V AC maximum continuous operating voltage (L-N).
- 255 V AC maximum continuous operating voltage (N-PE).
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Integrated visual indication and remote signalling microswitch.
- Replaceable protection cartridges.
- Compact pluggable DIN-rail construction.
Reliable Surge Protection for Industrial Electrical Systems
Transient overvoltages generated by indirect lightning strikes, utility switching and inductive loads can damage PLCs, drives, power supplies, communication equipment and other sensitive electronic devices. Installing a suitable surge protection device helps reduce costly equipment failures while improving system reliability.
The Mersen Surge-Trap K2 range combines high surge capacity, rapid response and replaceable cartridges with integrated remote monitoring, allowing maintenance teams to monitor protection status remotely while minimising downtime during servicing.
Typical Applications
- Commercial distribution boards.
- Industrial switchgear and control panels.
- Building management systems.
- PLC and automation control cabinets.
- Power supplies and variable speed drives.
- TT and TN-S low-voltage electrical installations.
