Mersen 44020003 K2-320 Type 2 replacement cartridge for compatible Surge-Trap K2 Series surge protection devices with 320 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£32.00
The Mersen 44020003, also known as the K2-320, is a genuine Type 2 surge protection replacement cartridge for compatible Mersen Surge-Trap® K2 Series surge protection devices. Designed to restore surge protection quickly and efficiently, this pluggable module enables maintenance without replacing the complete surge protection assembly.
The K2-320 is intended for 320 V AC systems and provides reliable protection against transient overvoltages caused by indirect lightning strikes and electrical switching events. Its modular design helps minimise downtime while extending the service life of installed surge protection systems.
Featuring a visual status indicator and pluggable construction, the Mersen 44020003 allows fast inspection and replacement when the protection module reaches the end of its operational life.
The Mersen K2-320 replacement cartridge enables maintenance personnel to restore surge protection without replacing the complete surge protection device. The pluggable design reduces maintenance time and helps keep critical electrical installations protected against transient overvoltages.
Replacing only the protection cartridge is a cost-effective maintenance solution for industrial facilities, commercial buildings and critical infrastructure where electrical system availability is essential.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® K2 Series |
| Model | K2-320 |
| Manufacturer part number | 44020003 |
| Product type | Replacement surge protection cartridge |
| SPD classification | Type 2 / IEC Class II |
| Number of poles | 1 |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Nominal discharge current (In) | 20 kA |
| Maximum discharge current (Imax) | 50 kA |
| Surge waveform | 8/20 µs |
| Format | Pluggable replacement cartridge |
| Mounting | Compatible K2 DIN rail surge protection base |
| Status indication | Visual operational indicator |
| Protection rating | IP20 |
| Operating temperature | -40 to +85 °C |
| RoHS compliant | Yes |
The Mersen 44020003 is a K2-320 replacement cartridge designed for compatible Mersen Surge-Trap® K2 Series surge protection devices.
No. It is a pluggable replacement cartridge designed for installation into a compatible Mersen K2 surge protection base.
The K2-320 has a maximum continuous operating voltage (Uc) of 320 V AC.
The cartridge provides a nominal discharge current of 20 kA and a maximum discharge current of 50 kA.
Yes. The pluggable design allows the replacement module to be exchanged while leaving the compatible DIN rail base installed.
Mersen Surge-Trap® K2 replacement cartridges provide a practical and reliable way to maintain surge protection systems while minimising downtime and replacement costs.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...