Mersen 83120002 SP12-12K275V Type 1+2 surge protection cartridge with 12.5 kA impulse current rating and 275 V AC maximum continuous operating voltage for compatible pluggable SPD assemblies.
£70.68
The Mersen 83120002, also known as SP12-12K275V, is a high-performance Type 1+2 surge protection cartridge designed to protect low voltage electrical installations from transient overvoltages and lightning impulse currents. As part of Mersen’s trusted surge protection range, it provides a reliable replacement cartridge for compatible surge protection devices used in commercial, industrial and building services applications.
This cartridge is rated for 12.5 kA impulse current and a 275 V AC maximum continuous operating voltage, making it suitable for systems where robust first-stage surge protection is required. Its Type 1+2 classification allows it to help discharge partial lightning currents while also limiting switching and atmospheric overvoltages.
The Mersen SP12-12K275V cartridge is designed for use in pluggable surge protection systems, allowing quick replacement of a worn or end-of-life protection module without replacing the complete surge protection assembly. This helps reduce downtime and supports straightforward maintenance of electrical distribution boards.
Surge protection devices help safeguard electrical systems by diverting harmful transient overvoltages away from sensitive equipment. These overvoltages may be caused by lightning activity, switching events, grid disturbances or nearby electrical faults.
The Mersen 83120002 cartridge supports ongoing protection by allowing the surge protection module to be replaced when required. This makes it a practical choice for maintenance teams, panel builders and electrical contractors responsible for keeping distribution boards protected and operational.
| Voltage | 275 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Model | SP12-12K275V |
| Product code | 83120002 |
| Product type | Surge protection cartridge |
| SPD classification | Type 1+2 / Class I+II |
| Impulse discharge current | 12.5 kA |
| Maximum continuous operating voltage | 275 V AC |
| Application | Low voltage surge protection |
| Format | Pluggable replacement cartridge |
| Protection function | Lightning current and transient overvoltage protection |
| Suitable installation area | Incoming supply panels and distribution boards |
| Mounting | Installed within compatible Mersen pluggable SPD bases |
| System compatibility | Dependent on the installed SPD base and electrical network arrangement |
It is used as a replacement Type 1+2 surge protection cartridge for compatible Mersen surge protection devices in low voltage electrical installations.
The Mersen 83120002 has an impulse discharge current rating of 12.5 kA.
The cartridge has a maximum continuous operating voltage rating of 275 V AC.
No. This product is a pluggable replacement cartridge and should be used with a compatible Mersen surge protection device base.
It is typically installed in compatible surge protection assemblies within distribution boards, incoming supply panels and electrical control cabinets.
Mersen surge protection products are trusted by electrical contractors, panel builders and maintenance engineers to help protect low voltage installations from lightning-related and switching-related transient overvoltages.
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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...