Mersen STPT23-20K275V-4P-LFM Type 2+3 leakage current free surge protection device with 20 kA discharge capacity, remote indication and 4+0 TNS configuration.
£138.73
The Mersen 83230131 is a robust Type 2+3 Surge Protection Device (SPD) engineered to protect low voltage electrical installations against transient overvoltages. As part of the Mersen Surge-Trap® Pluggable STPT23 LF Series, it combines high surge protection performance with leakage current free technology, making it ideal for protecting sensitive electrical and automation equipment.
Designed for installation within electrical distribution boards and industrial control panels, this pluggable SPD helps divert damaging surges caused by lightning strikes and switching operations before they reach connected equipment. Its modular construction allows rapid cartridge replacement, reducing maintenance time while maintaining reliable protection.
With a maximum discharge current of 20 kA (8/20 μs), a 275 V AC continuous operating voltage (Uc) and a 4+0 TNS configuration, the Mersen 83230131 is ideally suited to protecting switchboards, motor control centres, PLCs, drives and industrial automation systems operating on 230/400 V AC networks.
Surge protection devices safely divert transient overvoltages away from connected equipment before they can cause insulation failure, electronic damage or costly downtime. Installing an SPD helps improve system reliability while extending the service life of sensitive electrical equipment.
The Mersen Surge-Trap® STPT23 LF Series is designed as the final stage of protection within low voltage installations where upstream Type 2 protection is already provided, making it suitable for industrial automation, commercial buildings, motor control centres and electrical distribution systems.
| Voltage | 208 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 LF Series |
| Model | STPT23-20K275V-4P-LFM |
| SKU | 83230131 |
| Product type | Surge Protection Device (SPD) |
| SPD classification | Type 2+3 / Class II+III |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Nominal discharge current (In) | 10 kA |
| Combined discharge voltage (Uoc) | 10 kV |
| Continuous operating voltage (Uc) | 275 V AC |
| Nominal operating voltage (Un) | 230/400 V AC |
| System configuration | 4+0 TNS |
| Number of poles | 4 |
| Number of modules | 4 |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Remote indication | Yes |
| Leakage current free | Yes |
| Short circuit withstand (ISCCR) | 25 kA |
| Maximum back-up fuse | 63 A gG |
| Response time | 25 ns |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects low voltage electrical installations and connected equipment from transient overvoltages caused by lightning strikes and switching events.
The Mersen 83230131 is a Type 2+3 / Class II+III surge protection device.
It is designed for 230/400 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Yes. The integrated remote indication contact enables continuous monitoring of the surge protection device status.
Leakage current free technology reduces continuous leakage current during normal operation while maintaining effective surge protection for sensitive electrical installations.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and industrial maintenance professionals to safeguard critical electrical infrastructure against damaging transient overvoltages.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...