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K2-2P440-M Mersen Surge Protector Type 2 SPD 2 Pole 230/400 Volt 20KA IT Remote Indication
Mersen 44020219 K2-2P440-M Type 2 surge protection device with integrated remote signalling, 440 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£65.06
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.
Technical Specifications
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| Voltage | 400 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 2-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | IT, TN-S | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap K2 | |
| Model | K2-2P440-M | |
| SKU / Part number | 44020219 | |
| Product type | Surge protection device | |
| IEC SPD classification | Type 2 / Class II | |
| UL SPD classification | Type 1 Component Assembly | |
| Configuration | TN-S (also suitable for 230 V IT) | |
| Number of poles | 2 | |
| Network configuration | TN-S (also suitable for 230 V IT) | |
| Protection modes | L-PE / N-PE | |
| Nominal operating voltage | 400 V AC | |
| Maximum continuous operating voltage | 440 V AC | |
| Nominal discharge current | 20 kA | |
| Maximum discharge current | 50 kA | |
| Voltage protection level (L-G) | 1.5 kV | |
| Voltage protection level (N-G) | 1.5 kV | |
| Voltage protection level (L-N) | 2.5 kV | |
| Response time | ≤25 ns | |
| Short-circuit withstand rating | 25 kA | |
| Maximum back-up fuse | 315 A gG | |
| Status indication | Green (OK) / Not green (replace) | |
| Remote signalling | Integrated microswitch | |
| Protection rating | IP20 | |
| Housing material | PA6 CT1 & PA66 CT1 | |
| Terminal tightening torque | 3 Nm | |
| Mounting type | DIN rail | |
| Replacement cartridge | Mersen 44020005 | |
| Dimensions (H × W × D) | 90 × 36 × 74.4 mm | |
| Weight | approx. 0.223 kg | |
| EAN | 8435297889854 | |
| RoHS compliant | Yes |
Frequently Asked Questions
What is the Mersen 44020219 used for?
The Mersen 44020219 protects 400 V TN-S electrical installations against transient overvoltages caused by lightning activity, switching events and inductive loads while providing remote status monitoring.
What type of surge protection device is the K2-2P440-M?
It is a Type 2 / Class II surge protection device designed for secondary surge protection in commercial and industrial low-voltage electrical systems.
Does the K2-2P440-M provide remote monitoring?
Yes. The integrated microswitch enables remote signalling to PLCs, SCADA systems and building management systems.
What discharge current can the device withstand?
The device is rated for a 20 kA nominal discharge current and a 50 kA maximum discharge current using the standard 8/20 µs surge waveform.
Can the protection cartridge be replaced?
Yes. The pluggable design allows the protection cartridge to be replaced without removing the complete DIN-rail base. The replacement cartridge is Mersen part number 44020005.
Trusted Surge Protection from Mersen
Mersen Surge-Trap K2 surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to protect critical low-voltage electrical systems while providing reliable long-term surge protection and simplified maintenance.
