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Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N
Mersen 83120102 STPT12-12K275V-1P Type 1+2 surge protection device with 12.5 kA lightning impulse current, 230 V nominal operating voltage, 275 V maximum continuous operating voltage and pluggable 1-pole DIN rail design.
This product has been discontinued
A direct replacement is available below.
Replacement product
K1-1P275 Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N
SKU: 44120102
£63.86 ex VAT
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Why Choose the Mersen 83120102 Surge Protection Device?
The Mersen 83120102 STPT12-12K275V-1P is a compact and reliable Type 1+2 surge protection device (SPD) designed to protect low-voltage electrical installations against lightning currents and transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT12 Series, it is suitable for use as the first stage of protection in incoming power supply panels and main distribution boards.
This surge protection device combines lightning current discharge capability with effective voltage surge protection in a space-saving single-module format. Its pluggable construction allows fast cartridge replacement, while visual indication supports straightforward maintenance and fault identification.
With a 12.5 kA lightning impulse current (10/350 μs), 275 V maximum continuous operating voltage (Uc) and 230 V nominal operating voltage (Un), the 83120102 is ideal for single-phase L-N protection in industrial, commercial and building electrical systems.
Key Advantages
- Type 1+2 surge protection device for lightning and transient overvoltage protection.
- 12.5 kA Iimp (10/350 μs) lightning impulse current rating.
- 50 kA maximum discharge current (8/20 μs).
- 230 V nominal operating voltage for single-phase AC systems.
- Compact 1-pole pluggable design for DIN rail installation.
- Suitable as the first level of protection in main distribution boards.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120102.
- Model: STPT12-12K275V-1P.
- IEC Type 1+2 / Class I+II surge protection.
- 230 V AC nominal operating voltage (Un).
- 275 V AC maximum continuous operating voltage (Uc).
- 1-pole, 1-module pluggable format.
- Visual end-of-life indication.
- DIN rail mounting.
- Designed for L-N protection in low-voltage systems.
Reliable Protection Against Transient Overvoltages
Surge protection devices help prevent damage caused by lightning currents, grid switching events and transient voltage spikes. Installing a Type 1+2 SPD at the incoming supply point helps protect downstream electrical equipment, reduce downtime and improve the reliability of the complete installation.
The Mersen STPT12 Series is designed for demanding low-voltage distribution systems where dependable protection and simple maintenance are required. Its pluggable cartridge format allows the protection module to be replaced quickly without rewiring the base.
Typical Applications
- Main electrical distribution boards.
- Incoming power supply panels.
- Industrial automation systems.
- Commercial building installations.
- Control panels and machinery supplies.
- Telecom, IT and infrastructure systems.
Technical Specifications
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| Impulse Current Iimp (kA) | 12.5 kA | |
|---|---|---|
| Voltage | 230 V | |
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 1+2 | |
| Earthing System | TN-C, TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | No | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT12 | |
| Model | STPT12-12K275V-1P | |
| Part number | 83120102 | |
| Product type | Type 1+2 Surge Protection Device | |
| IEC classification | Class I+II | |
| Lightning impulse current (Iimp 10/350 μs) | 12.5 kA | |
| Maximum discharge current (Imax 8/20 μs) | 50 kA | |
| Nominal discharge current (In 8/20 μs) | 20 kA | |
| Nominal operating voltage (Un) | 230 V AC | |
| Maximum continuous operating voltage (Uc) | 275 V AC | |
| Protection mode | L-N | |
| Number of poles | 1 | |
| Module width | 1 module | |
| Mounting type | DIN rail | |
| Protection rating | IP20 | |
| Format | Pluggable | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83120102 used for?
It is used to protect low-voltage electrical installations from lightning currents and transient overvoltages.
What type of surge protection device is it?
The 83120102 is a Type 1+2 (Class I+II) surge protection device for combined lightning current and surge protection.
What voltage is the Mersen 83120102 rated for?
It has a 230 V AC nominal operating voltage and a 275 V AC maximum continuous operating voltage.
Is the Mersen 83120102 pluggable?
Yes. It uses a pluggable cartridge design, allowing quick replacement of the surge protection module.
Where is this SPD typically installed?
It is typically installed on a DIN rail in main distribution boards or incoming supply panels.
Trusted Protection for Critical Electrical Systems
Mersen Surge-Trap® surge protection devices are trusted worldwide to help protect electrical installations, industrial equipment and critical infrastructure from the damaging effects of lightning strikes and transient overvoltages.
