
Mersen Surge-Trap SP12-12K275V Type 1+2 Replacement Cartridge, Line and Neutral 275V
- Brand:
- Mersen
- Part number:
- 83120002
- EAN:
- 8435297850182
275V replacement protection cartridge for Mersen Surge-Trap STPT12 Type 1+2 arresters, used in the line and neutral positions of TN-S devices on 230V systems.
- 275V line and neutral cartridge
- Iimp 12.5kA, Imax 50kA, Up 1.3kV
- For Surge-Trap STPT12 arresters
- Mechanically coded, plug-in fit
Out of stock
UK delivery £9.95 ex VAT, free on orders of £100 ex VAT or more; usually 2-3 working days.
Minimum order £50 ex VAT. All prices exclude VAT, which is added at checkout.
Project quantities or a lead time to check? Request a quote
Specifications
Electrical
| Earthing system (as supplied) | TN |
|---|---|
| Application | Mains AC |
Protection
| SPD type | Type 1+2 |
|---|
Fit
| Replaces | L + N set |
|---|
Identification
| Brand | Mersen |
|---|---|
| Part number | 83120002 |
| EAN | 8435297850182 |
| Range | Mersen Surge-Trap STPT12 |
| Part type | Replacement module / cartridge |
More technical data
| Manufacturer | Mersen (Surge-Trap, catalogue SP12-12K275V) |
|---|---|
| Function | line and neutral replacement protection cartridge |
| For use in | Surge-Trap STPT12 Type 1+2 arresters, 230V systems |
| Nominal voltage Un | 230 VAC; max continuous operating voltage Uc: 275V |
| Lightning impulse current Iimp (10/350) | 12.5kA; Imax (8/20): 50kA |
| Nominal discharge current In (8/20) | 20kA; Up at In: 1.3kV |
Product details
This is the standard 275V cartridge for Mersen's Surge-Trap STPT12 combined arresters on 230V systems. In a TN-S device it occupies both the line and neutral positions, so one part number covers every pole and a single spare covers any of them.
Key features
- 275V protection cartridge for Surge-Trap STPT12 Type 1+2 arresters
- Used in line and neutral positions on TN-S configured devices
- Iimp of 12.5kA (10/350), Imax of 50kA and a 1.3kV protection level
- Mechanically coded plug-in fit, so it can only go where it belongs
- One cartridge type covers every pole of a TN-S arrester
Typical applications
STPT12 arresters are installed at incoming supply panels in industrial and commercial buildings, warehouses and distribution centres, telecoms and data facilities, and water treatment sites. Because the same cartridge serves all poles on a TN-S device, a single spare on the shelf restores protection whichever pole indicates end of life.
Compliance
Part of the Surge-Trap STPT12 Type 1+2 / Class I+II range tested to IEC 61643-11 and EN 61643-11. Fit only the cartridge specified for the device and system voltage - the cartridges are mechanically coded to prevent mismatches.
Order today for fast UK dispatch, or send us the arrester catalogue number and we will confirm the correct cartridge.






