Mersen 44020005 K2-440 Type 2 replacement cartridge for compatible Surge-Trap K2 Series surge protection devices with 440 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£32.00
The Mersen 44020005, also known as the K2-440, is a genuine Type 2 surge protection replacement cartridge for compatible Mersen Surge-Trap® K2 Series surge protection devices. Designed for straightforward maintenance, this pluggable module restores surge protection without requiring replacement of the complete SPD assembly, reducing both downtime and maintenance costs.
The K2-440 is intended for applications requiring a 440 V AC maximum continuous operating voltage (Uc). It provides dependable protection against transient overvoltages caused by lightning activity and electrical switching events, making it suitable for industrial power distribution systems operating at higher voltages.
Its modular plug-in design allows rapid replacement when the cartridge reaches the end of its service life, while the integrated visual status indicator enables quick inspection during routine maintenance.
The Mersen K2-440 replacement cartridge enables engineers to restore surge protection quickly by replacing only the protection module rather than the complete surge protection device. This modular approach reduces maintenance time while helping to maintain continuous protection for critical electrical installations.
Suitable for industrial and commercial environments, the K2-440 supports preventative maintenance programmes by allowing worn cartridges to be exchanged quickly and safely in compatible Mersen Surge-Trap® K2 assemblies.
| Voltage | 400 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® K2 Series |
| Model | K2-440 |
| Manufacturer part number | 44020005 |
| Product type | Replacement surge protection cartridge |
| SPD classification | Type 2 / IEC Class II |
| Number of poles | 1 |
| Maximum continuous operating voltage (Uc) | 440 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 44020005 is a K2-440 replacement cartridge for compatible Mersen Surge-Trap® K2 Series surge protection devices.
No. It is a pluggable replacement cartridge designed for installation in a compatible Mersen K2 surge protection base.
The K2-440 is rated for a maximum continuous operating voltage (Uc) of 440 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 cartridge to be replaced while retaining the compatible DIN rail surge protection base.
Mersen Surge-Trap® K2 replacement cartridges provide a reliable and cost-effective solution for maintaining surge protection systems in demanding industrial and commercial environments.
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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...