Why Choose the Mersen 44020201 K2-2PG275-M Surge Protection Device?
The Mersen 44020201, also identified as the K2-2PG275-M, is a reliable 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 provides combined line-to-neutral and neutral-to-earth protection for commercial, industrial and infrastructure electrical systems.
This two-pole surge protector features a pluggable construction that allows the protection cartridges to be inspected and replaced without removing the complete DIN-rail base. A visual status indicator provides clear local condition monitoring, while the integrated microswitch enables remote signalling to control panels, building management systems and industrial monitoring equipment.
With a nominal operating voltage of 230 V AC, a maximum continuous operating voltage of 275 V AC between line and neutral, a nominal discharge current of 20 kA and a maximum discharge current of 50 kA, the Mersen 44020201 offers dependable protection against switching transients and lightning-induced surges. Its compact two-module design enables straightforward installation in distribution boards and control cabinets.
Key Advantages
- Reliable Type 2 surge protection for single-phase electrical installations.
- Combined L-N and N-PE protection modes in one compact device.
- 50 kA maximum discharge current for robust transient protection.
- Integrated remote signalling microswitch for condition monitoring.
- Pluggable cartridges simplify inspection, 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.
- Two-pole configuration.
- 230 V AC nominal operating voltage.
- 275 V AC maximum continuous operating voltage for L-N.
- 255 V AC maximum continuous operating voltage for N-PE.
- 20 kA nominal discharge current.
- 50 kA maximum discharge current.
- Visual condition indicator with integrated microswitch.
- Replaceable L-N and N-PE protection cartridges.
- Compact pluggable DIN-rail construction.
Remote-Monitored Surge Protection for Electrical Systems
Transient overvoltages caused by indirect lightning activity, utility switching and inductive electrical loads can damage PLCs, drives, power supplies, communication equipment and other sensitive electronics. A suitable surge protection device diverts excessive surge energy away from connected equipment, helping reduce breakdowns and unplanned downtime.
The Mersen K2-2PG275-M combines local visual indication with a remote signalling microswitch, making it particularly suitable for installations where protection status must be monitored from a central control system. Its replaceable cartridges also allow maintenance teams to restore protection without replacing the complete device.
Typical Applications
- Single-phase commercial distribution boards.
- Industrial switchgear and electrical control panels.
- Building management and monitoring systems.
- PLC, automation and process control cabinets.
- Power supplies, drives and sensitive electronic equipment.
- TT and TN-S low-voltage electrical installations.
