Mersen 83120001 Surge-Trap SP12-12K150V replacement surge protection cartridge, Type 1+2 / Class I+II, 12.5 kA impulse current and 150 V maximum continuous operating voltage for electrical distribution surge protection.
Original price was: £76.34.£56.42Current price is: £56.42.
The Mersen 83120001 is a compact Surge-Trap pluggable surge protection cartridge designed for use with compatible Mersen Type 1+2 surge protective devices. It helps maintain dependable protection against transient overvoltages caused by lightning currents and switching surges in industrial, commercial and electrical distribution systems.
Also identified as SP12-12K150V, this replacement cartridge is part of Mersen's STP T12 12.5 surge protection range. It is designed for Type 1+2 / Class I+II surge protection applications and supports a 12.5 kA lightning impulse current rating, making it suitable for incoming supply protection and coordinated surge protection systems.
With a 150 V maximum continuous operating voltage and a 120 V nominal voltage, the Mersen 83120001 is suitable for compatible low-voltage surge protection assemblies. Its pluggable cartridge design allows fast replacement, helping reduce downtime and maintain safe operation of electrical equipment.
Surge protection cartridges such as the Mersen 83120001 help keep surge protective devices operational after exposure to transient overvoltages. Replacing a worn or end-of-life cartridge helps maintain protection for connected electrical equipment and distribution systems.
The Type 1+2 protection rating makes this cartridge suitable for combined lightning current and surge protection applications. It is commonly used where incoming power supplies, control panels and sensitive electrical equipment need dependable protection from damaging voltage spikes.
| Voltage | 150 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap STP T12 12.5 |
| Model | SP12-12K150V |
| SKU | 83120001 |
| Product type | Surge protection replacement cartridge |
| SPD type | Type 1+2 / Class I+II |
| Lightning impulse current | 12.5 kA |
| Maximum continuous operating voltage | 150 V |
| Nominal voltage | 120 V |
| Number of poles | 1 pole cartridge |
| Format | Pluggable replacement cartridge |
| Standards | IEC/EN 61643-11 |
| Application | Surge protection for power lines |
| Tariff code | 85363010 |
The Mersen 83120001 is used as a replacement cartridge for compatible Mersen Surge-Trap Type 1+2 surge protection devices.
The model reference is SP12-12K150V.
It is designed for Type 1+2 / Class I+II surge protection applications.
The cartridge has a maximum continuous operating voltage of 150 V.
It is typically fitted into compatible Mersen surge protection bases within electrical distribution panels and control cabinets.
Mersen Surge-Trap surge protection devices are used by electrical engineers, panel builders and facilities teams to help protect power distribution systems from lightning currents and transient voltage surges.
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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...