Why Choose the Mersen 44020219 K2-2P440-M Surge Protection Device?
The Mersen 44020219, also identified as the K2-2P440-M, is a premium Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages. As part of the proven Mersen Surge-Trap K2 series, it provides dependable protection for 400 V TN-S electrical systems while incorporating an integrated remote signalling contact for continuous status monitoring.
The K2-2P440-M features a reinforced pluggable construction that enables the protection cartridge to be replaced without removing the complete DIN-rail base. A clear visual status indicator displays the operational condition locally, while the integrated microswitch provides remote signalling to PLCs, SCADA systems and building management systems, making it ideal for critical commercial and industrial installations.
With a 400 V AC nominal operating voltage, a 440 V AC maximum continuous operating voltage, a 20 kA nominal discharge current and a 50 kA maximum discharge current, the Mersen 44020219 provides reliable protection against lightning-induced surges and switching transients. Its compact two-module DIN-rail design allows straightforward installation within distribution boards, switchgear and industrial control panels.
Key Advantages
- Reliable Type 2 surge protection for 400 V TN-S electrical systems.
- Integrated remote signalling microswitch for continuous condition monitoring.
- 50 kA maximum discharge current for excellent transient overvoltage protection.
- Replaceable plug-in cartridge simplifies servicing and maintenance.
- Visual operating status indicator enables rapid inspections.
- Compact DIN-rail construction saves valuable panel space.
Key Features
- Mersen Surge-Trap K2 series.
- Type 2 / Class II surge protection device.
- Two-pole (2+0) configuration.
- 400 V AC nominal operating voltage.
- 440 V AC maximum continuous operating voltage (Uc).
- 20 kA nominal discharge current (In).
- 50 kA maximum discharge current (Imax).
- Protection modes: L-PE and N-PE.
- Integrated visual indication and remote signalling microswitch.
- Replaceable protection cartridge.
- Dynamic thermal disconnection technology.
- Compact pluggable DIN-rail construction.
Reliable Surge Protection with Remote Monitoring
Transient overvoltages caused by indirect lightning strikes, utility switching 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 costly failures, minimise downtime and improve long-term electrical reliability.
The Mersen K2-2P440-M combines high surge current capability with integrated remote signalling, enabling maintenance personnel to monitor the protection status from a central control system while benefiting from quick replacement of the plug-in protection cartridge whenever servicing is required.
Typical Applications
- 400 V TN-S distribution boards.
- Industrial switchgear and control panels.
- Commercial electrical installations.
- Motor control centres.
- PLC and automation cabinets.
- Building management and SCADA systems.
