Why Choose the Mersen 44120412 K1-4P320 Surge Protection Device?
The Mersen 44120412 K1-4P320 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. Part of the proven Mersen Surge-Trap® K - K1 Series, this pluggable SPD delivers reliable first-level surge protection for industrial, commercial and critical infrastructure applications where electrical system reliability is essential.
Designed for installation within the main distribution board, the K1-4P320 features a compact DIN rail mounted housing and replaceable pluggable protection modules, allowing fast servicing while maintaining continuous protection for valuable electrical equipment. Its robust construction and high surge current capability make it ideal for demanding power distribution environments.
With 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 is specifically designed for TNS 277/480 V AC three-phase electrical systems, providing dependable protection against direct lightning strikes and switching transients.
Key Advantages
- High-performance Type 1+2 surge protection for three-phase electrical installations.
- 4+0 protection configuration designed specifically for TNS systems.
- Pluggable cartridge design enables quick servicing and replacement.
- Suitable for 277/480 V AC three-phase networks.
- Compact DIN rail mounted construction maximises panel space.
- Protects switchgear, PLCs, drives and sensitive electrical 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.
- Green (OK) / Not Green (Replace) visual indication.
- Compact pluggable DIN rail mounted construction.
Reliable Protection Against Electrical Surges
The Mersen K1-4P320 safely diverts lightning currents and transient overvoltages away from connected equipment before they can damage switchgear, PLCs, motor drives, control panels and other sensitive electronic systems. This helps minimise downtime, reduce maintenance costs and improve the long-term reliability of electrical installations.
Its combination of high surge current capability, modular pluggable construction and compact DIN rail mounting makes it an excellent choice for industrial facilities, commercial premises, manufacturing plants and critical infrastructure where dependable surge protection is required.
Typical Applications
- Main three-phase distribution boards.
- Industrial automation systems.
- Commercial buildings.
- Manufacturing facilities.
- Electrical switchboards.
- Infrastructure projects.
- Water treatment plants.
- TNS 277/480 V AC three-phase electrical systems.
