Why Choose the Mersen 44120413 K1-4P320-M Surge Protection Device?
The Mersen 44120413 K1-4P320-M is a premium Type 1+2 Surge Protection Device (SPD) engineered to protect three-phase low-voltage electrical installations against lightning currents and transient overvoltages. As part of the trusted Mersen Surge-Trap® K - K1 Series, this pluggable SPD combines high surge current capability with integrated remote signalling, making it an excellent choice for industrial, commercial and critical infrastructure installations.
Designed for installation within the main distribution board, the K1-4P320-M features replaceable pluggable protection modules that simplify maintenance and minimise downtime. The integrated microswitch provides remote status monitoring, enabling maintenance personnel to receive immediate notification when replacement cartridges are required without opening the electrical enclosure.
Featuring a 320 V AC maximum continuous operating voltage (Uc), a 4+0 protection configuration and a 12.5 kA lightning impulse current (Iimp), the K1-4P320-M is specifically designed for TNS 277/480 V AC three-phase electrical systems, delivering dependable protection against direct lightning strikes and switching surges.
Key Advantages
- High-performance Type 1+2 surge protection for three-phase electrical installations.
- Integrated remote signalling microswitch for continuous status monitoring.
- 4+0 protection configuration optimised for TNS systems.
- Pluggable cartridge design enables rapid servicing and replacement.
- Suitable for 277/480 V AC three-phase power distribution systems.
- Protects switchgear, PLCs, drives and sensitive electronic equipment against lightning and transient overvoltages.
Key Features
- Mersen Surge-Trap® K - K1 Series.
- IEC Class I+II / Type 1+2 surge protection device.
- 320 V AC maximum continuous operating voltage (Uc).
- 12.5 kA lightning impulse current (Iimp).
- 20 kA nominal discharge current (In).
- 50 kA maximum discharge current (Imax).
- Four-pole 4+0 protection configuration.
- Integrated remote indication microswitch.
- Green (OK) / Not Green (Replace) visual status indication.
- Compact pluggable DIN rail mounted construction.
Reliable Protection Against Electrical Surges
The Mersen K1-4P320-M safely diverts lightning currents and transient overvoltages away from connected electrical equipment before they can damage switchgear, PLCs, motor drives, building management systems and other sensitive electronic devices. This helps minimise costly downtime, reduce maintenance requirements and improve the long-term reliability of power distribution systems.
Its combination of high surge current capability, integrated remote monitoring and pluggable cartridge design makes it an ideal solution for manufacturing facilities, commercial buildings, utilities, renewable energy installations and other mission-critical electrical infrastructure.
Typical Applications
- Main three-phase distribution boards.
- Industrial automation systems.
- Commercial buildings.
- Manufacturing facilities.
- Electrical switchboards.
- Critical infrastructure.
- Renewable energy installations.
- TNS 277/480 V AC three-phase electrical systems.
