Mersen 44020001 K2-275 Type 2 replacement cartridge for compatible Surge-Trap K2 Series surge protection devices, featuring 275 V AC maximum continuous operating voltage, 20 kA nominal discharge current and 50 kA maximum discharge current.
£29.62
The Mersen 44020001, also known as the K2-275, is a genuine Type 2 surge protection replacement cartridge for compatible Mersen Surge-Trap® K2 Series surge protection devices. Designed for the rapid restoration of surge protection without replacing the complete SPD assembly, this pluggable single-pole module offers a cost-effective maintenance solution for commercial and industrial electrical installations.
The K2-275 is designed for 230 V AC systems with a 275 V AC maximum continuous operating voltage (Uc). It provides a 20 kA nominal discharge current and a 50 kA maximum discharge current, delivering dependable protection against transient overvoltages caused by indirect lightning strikes and electrical switching events.
Its reinforced pluggable construction allows replacement within seconds while leaving the original DIN rail base and wiring intact. An integrated visual status indicator makes routine inspections simple, helping maintenance engineers identify when replacement is required.
Surge protection devices absorb transient energy throughout their service life and eventually require replacement after repeated surge events. The Mersen K2-275 replacement cartridge enables maintenance engineers to restore protection quickly without disconnecting wiring or replacing the complete surge protection assembly.
Its modular design reduces maintenance costs and minimises system downtime, making it ideal for industrial plants, commercial buildings and critical infrastructure where continuous electrical protection is essential.
| Voltage | 230 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® K2 Series |
| Model | K2-275 |
| Manufacturer part number | 44020001 |
| Product type | Replacement surge protection cartridge |
| SPD classification | Type 2 / IEC Class II |
| Number of poles | 1 |
| Nominal system voltage | 230 V AC |
| Maximum continuous operating voltage (Uc) | 275 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 |
| Maximum back-up fuse | 315 A |
| Operating temperature | -40 to +85 °C |
| Protection rating | IP20 |
| RoHS compliant | Yes |
The Mersen 44020001 is a genuine K2-275 replacement cartridge designed to restore surge protection in compatible Mersen Surge-Trap® K2 Series devices.
No. It is a replacement cartridge that fits compatible Mersen K2 surge protection bases and is not a complete standalone SPD.
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 original surge protection base and wiring in place.
The K2-275 is designed for compatible 230 V AC Mersen Surge-Trap® K2 Series surge protection devices using a 275 V AC replacement cartridge.
Mersen Surge-Trap® K2 replacement cartridges help maintain reliable surge protection while reducing maintenance time and extending the service life of installed surge protection systems.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...