Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
SP12-25K275V Mersen Type 1+2 1P 230V Replacement Cartridge
Mersen 83120007 SP12-25K275V Type 1+2 1 pole surge protection device with 25 kA lightning impulse current, 100 kA maximum discharge current and 275 V AC maximum continuous operating voltage.
£91.06
Why Choose the Mersen 83120007 Surge-Trap Surge Protection Device?
The Mersen 83120007, also known as SP12-25K275V, is a high-performance Type 1+2 surge protection device designed to protect electrical installations from lightning currents and transient overvoltages. It is suitable for use in industrial, commercial and power distribution systems where reliable incoming surge protection is required.
As part of the Mersen Surge-Trap STPT12 25 kA series, this pluggable SPD is engineered for installation at the origin of an electrical system. It helps discharge high-energy surge currents while limiting voltage spikes that could otherwise damage downstream equipment, control panels, automation systems and sensitive electronics.
With a 25 kA lightning impulse current rating, 100 kA maximum discharge current and 275 V AC maximum continuous operating voltage, the Mersen 83120007 is a robust 1 pole Type 1+2 SPD for 230 V networks and coordinated surge protection applications.
Key Advantages
- Type 1+2 / Class I+II surge protection device for incoming electrical protection.
- 25 kA lightning impulse current rating for high-energy surge discharge.
- 100 kA maximum discharge current for robust protection performance.
- 275 V AC maximum continuous operating voltage for 230 V electrical systems.
- Pluggable cartridge design supports fast maintenance and replacement.
- Suitable for industrial switchboards, distribution boards and control panels.
Key Features
- Mersen Surge-Trap STPT12 series.
- Type 1+2 / Class I+II SPD.
- 1 pole configuration.
- 230 V nominal voltage.
- 275 V AC maximum continuous operating voltage.
- 25 kA lightning impulse current.
- 25 kA nominal discharge current.
- 100 kA maximum discharge current.
Reliable Surge Protection for Electrical Distribution Systems
Type 1+2 surge protection devices are commonly installed at the incoming supply of an electrical installation to discharge lightning currents and reduce the risk of damaging transient overvoltages. They are especially important for sites with external lightning protection systems or increased exposure to atmospheric surge events.
The Mersen 83120007 supports dependable protection for connected equipment while providing a practical pluggable design for inspection and maintenance. This makes it suitable for panel builders, electrical contractors and facilities teams responsible for protecting critical power distribution infrastructure.
Typical Applications
- Main incoming electrical distribution boards.
- Industrial switchboards and control panels.
- Commercial building electrical installations.
- Facilities with external lightning protection systems.
- Power distribution and automation systems.
- DIN rail surge protection assemblies.
Technical Specifications
Tick the specs you need, then view products that match.
| Impulse Current Iimp (kA) | 25 kA | |
|---|---|---|
| Voltage | 275 V | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Replacement cartridge | |
| SPD Type | Type 1+2 | |
| Nominal Discharge Current (In) | 25 kA | |
| Manufacturer | Mersen | |
| Series | Surge-Trap STPT12 25 | |
| Model | SP12-25K275V | |
| Manufacturer part number | 83120007 | |
| Product type | Surge protection device | |
| SPD classification | Type 1+2 / Class I+II | |
| Number of poles | 1 pole | |
| Nominal voltage | 230 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Lightning impulse current (Iimp) | 25 kA | |
| Nominal discharge current (In) | 25 kA | |
| Maximum discharge current (Imax) | 100 kA | |
| Protection rating | IP20 | |
| Mounting type | DIN rail | |
| Format | Pluggable surge protection device |
Frequently Asked Questions
What is the Mersen 83120007 used for?
The Mersen 83120007 is a Type 1+2 surge protection device used to protect electrical distribution systems from lightning currents and transient overvoltages.
What is the alternative product code?
The alternative product code for Mersen 83120007 is SP12-25K275V.
What voltage is the Mersen 83120007 rated for?
This surge protection device is designed for 230 V AC nominal systems and has a 275 V AC maximum continuous operating voltage.
What surge protection type does this device provide?
The Mersen 83120007 provides Type 1+2 / Class I+II surge protection with a 25 kA lightning impulse current rating.
Where is this surge protection device typically installed?
It is typically installed on DIN rail inside incoming distribution boards, industrial switchboards and control panels where coordinated surge protection is required.
Trusted by Electrical Engineers Worldwide
Mersen Surge-Trap surge protection devices are widely used by panel builders, electrical contractors and maintenance engineers to protect industrial and commercial electrical installations from lightning-related surge events and transient overvoltages.
