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Mersen Surge Protector Type 1+2 SPD 1 Pole 400 Volt 20KA L-N Remote Indication
Mersen 83120107 STPT12-12K440V-1PM Type 1+2 surge protection device with 12.5 kA lightning impulse current, 400 V nominal operating voltage, 440 V maximum continuous operating voltage, pluggable 1-pole DIN rail design and remote indication.
£73.61
Why Choose the Mersen 83120107 Surge Protection Device?
The Mersen 83120107 STPT12-12K440V-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 incoming supply panels, main distribution boards and installations requiring a first level of surge protection.
This surge protection device combines high lightning current discharge capability with effective transient voltage suppression in a slim, single-pole pluggable format. Its replaceable cartridge design supports fast maintenance, while integrated visual and remote indication allows convenient monitoring of device status.
With a 12.5 kA lightning impulse current (10/350 μs), 440 V maximum continuous operating voltage (Uc) and 400 V nominal operating voltage (Un), the 83120107 provides reliable L-N protection for industrial, commercial and infrastructure 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).
- 400 V nominal operating voltage for low-voltage AC systems.
- Compact 1-pole pluggable design for DIN rail installation.
- Integrated remote indication for device status monitoring.
Key Features
- Mersen Surge-Trap® STPT12 Series.
- Catalogue number: 83120107.
- Model: STPT12-12K440V-1PM.
- IEC Type 1+2 / Class I+II surge protection.
- 400 V AC nominal operating voltage (Un).
- 440 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 low-voltage systems.
Reliable Protection Against Transient Overvoltages
Surge protection devices help protect electrical equipment from voltage spikes caused by lightning activity, switching operations and disturbances on the power network. Installing a Type 1+2 SPD at the incoming supply point helps reduce the risk of damage, downtime and disruption to critical electrical systems.
The Mersen STPT12 Series is engineered for low-voltage distribution applications where reliable protection and straightforward maintenance are required. The pluggable cartridge format allows the protection module to be replaced quickly 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 | 400 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 | STPT12-12K440V-1PM | |
| Part number | 83120107 | |
| 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) | 400 V AC | |
| Maximum continuous operating voltage (Uc) | 440 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 83120107 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 83120107 is a Type 1+2 (Class I+II) surge protection device for combined lightning current and surge protection.
What voltage is the Mersen 83120107 rated for?
It has a 400 V AC nominal operating voltage and a 440 V AC maximum continuous operating voltage.
Does the Mersen 83120107 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.
