Mersen 83120000 Surge-Trap SP12-12K75V replacement surge protection cartridge, Type 1+2 / Class I+II, 12.5 kA impulse current and 75 V maximum continuous operating voltage for electrical distribution surge protection.
£77.85
The Mersen 83120000 is a compact Surge-Trap pluggable surge protection cartridge designed for use with Mersen Type 1+2 surge protective devices. It helps maintain reliable protection against transient overvoltages caused by lightning currents and switching surges in industrial, commercial and electrical distribution systems.
Also identified as SP12-12K75V, 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 installations requiring robust incoming surge protection.
With a 75 V maximum continuous operating voltage and pluggable cartridge format, the Mersen 83120000 allows straightforward replacement within compatible surge protection bases. Its mechanically coded design helps reduce replacement errors and supports safe, efficient maintenance of surge protection systems.
Surge protection cartridges such as the Mersen 83120000 help ensure surge protective devices remain operational after exposure to transient overvoltages. By replacing the cartridge when required, electrical systems can maintain protection against damaging voltage surges.
The Type 1+2 protection rating makes this cartridge suitable for combined lightning current and surge protection systems. It is commonly used as part of incoming power supply protection where equipment requires dependable safeguarding from transient electrical disturbances.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap STP T12 12.5 |
| Model | SP12-12K75V |
| SKU | 83120000 |
| Product type | Surge protection replacement cartridge |
| SPD type | Type 1+2 / Class I+II |
| Lightning impulse current | 12.5 kA |
| Maximum continuous operating voltage | 75 V |
| Nominal voltage | 60 V |
| Number of poles | 1 pole cartridge |
| Format | Pluggable replacement cartridge |
| Standards | IEC/EN 61643-11 |
| Application | Surge protection for power lines |
| EAN | 8435297850212 |
| Weight | approx. 0.111 kg |
The Mersen 83120000 is used as a replacement cartridge for compatible Mersen Surge-Trap Type 1+2 surge protection devices.
The model reference is SP12-12K75V.
It is designed for Type 1+2 / Class I+II surge protection applications.
The cartridge has a lightning impulse current rating of 12.5 kA.
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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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...