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Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N Remote Indication
Mersen 83120103 STPT12-12K275V-1PM Type 1+2 surge protection device with 12.5 kA lightning impulse current, 230 V nominal operating voltage, 275 V maximum continuous operating voltage, pluggable 1-pole DIN rail design and remote indication.
This product has been discontinued
A direct replacement is available below.
Replacement product
K1-1P275-M Mersen Surge Protector Type 1+2 SPD 1 Pole 230 Volt 20KA L-N Remote Indication
SKU: 44120103
£72.17 ex VAT
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Why Choose the Mersen 83120103 Surge Protection Device?
The Mersen 83120103 STPT12-12K275V-1PM is a compact and dependable 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 level of protection in main distribution boards and incoming power supply panels.
This surge protection device combines lightning current discharge capability with robust surge protection in a compact single-pole pluggable format. Its replaceable cartridge design makes maintenance straightforward, while integrated visual and remote indication help support reliable monitoring of device status.
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 83120103 is ideal for L-N protection in single-phase industrial, commercial and building electrical systems.
Key Advantages
- Type 1+2 surge protection device for lightning current 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 low-voltage AC systems.
- Compact 1-pole pluggable design for DIN rail installation.
- Integrated remote indication for status monitoring.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120103.
- Model: STPT12-12K275V-1PM.
- 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 and remote end-of-life indication.
- DIN rail mounting.
- Designed for L-N protection in single-phase systems.
Reliable Protection Against Transient Overvoltages
Surge protection devices help protect electrical equipment from damaging voltage spikes caused by lightning activity, switching events and network disturbances. Installing a Type 1+2 SPD at the incoming supply point helps reduce the risk of equipment failure, downtime and costly system disruption.
The Mersen STPT12 Series is engineered for low-voltage distribution systems where robust surge protection and simple maintenance are required. The pluggable cartridge design allows fast replacement of the protection module without rewiring the complete base.
Typical Applications
- Main electrical distribution boards.
- Incoming power supply panels.
- Industrial automation systems.
- Commercial building installations.
- Control panels and machinery supplies.
- Infrastructure and critical power 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 | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT12 | |
| Model | STPT12-12K275V-1PM | |
| Part number | 83120103 | |
| 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 | |
| Remote indication | Yes | |
| Format | Pluggable | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83120103 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 83120103 is a Type 1+2 (Class I+II) surge protection device for combined lightning current and surge protection.
What voltage is the Mersen 83120103 rated for?
It has a 230 V AC nominal operating voltage and a 275 V AC maximum continuous operating voltage.
Does the Mersen 83120103 have remote indication?
Yes. This model includes remote indication, allowing the SPD status to be monitored from a control system or panel indicator.
Where is this SPD typically installed?
It is typically installed on a DIN rail in main distribution boards or incoming supply panels as the first level of surge protection.
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.
