Mersen 83230105 STPT23-20K440V-1PM Type 2+3 surge protection device with remote indication, 20 kA maximum discharge current and 440 V AC maximum continuous operating voltage for 400 V AC systems.
£36.82
The Mersen 83230105 is a high-performance Type 2+3 surge protection device (SPD) developed to protect low-voltage electrical systems against transient overvoltages caused by lightning strikes and switching events. As part of the Mersen Surge-Trap® Pluggable STPT23 Series, it offers dependable protection for industrial, commercial and OEM electrical installations.
This compact surge protection device is designed for 400 V AC line-to-neutral applications and features a pluggable cartridge with remote indication, allowing quick replacement while providing remote monitoring of the protection status. This makes it ideal for installations where preventative maintenance and continuous system availability are essential.
With a 20 kA maximum discharge current (Imax), 10 kA nominal discharge current (In) and a 440 V AC maximum continuous operating voltage (Uc), the Mersen 83230105 provides effective protection for automation equipment, PLCs, drives, switchboards and critical electrical systems.
Transient overvoltages can damage sensitive electronic equipment, causing costly failures and unexpected downtime. Installing a quality surge protection device helps safeguard electrical assets by safely diverting surge energy before it reaches connected equipment.
The Mersen Surge-Trap® STPT23 Series is engineered for modern industrial installations, offering high surge capacity, compact dimensions and easy maintenance. The remote indication contact allows maintenance teams to monitor protection status without opening electrical enclosures.
| Voltage | 400 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 |
| Model | STPT23-20K440V-1PM |
| SKU | 83230105 |
| Product type | Type 2+3 Surge Protection Device |
| SPD classification | IEC Type 2+3 / Class II + III |
| Nominal operating voltage (Un) | 400 V AC |
| Maximum continuous operating voltage (Uc) | 440 V AC |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Nominal discharge current (In) | 10 kA (8/20 μs) |
| Combined voltage pulse (Uoc) | 10 kV |
| Number of poles | 1 pole |
| Connection | Line to Neutral (L-N) |
| Remote indication | Yes |
| Mounting type | DIN rail |
| Protection rating | IP20 |
It protects low-voltage electrical installations and sensitive electronic equipment from damaging transient overvoltages.
The 83230105 is a Type 2+3 / Class II + III surge protection device suitable for final-stage protection of electrical equipment.
Yes. The integrated remote indication contact allows the protection status to be monitored remotely from building or automation systems.
The device is designed for 400 V AC systems with a maximum continuous operating voltage of 440 V AC.
It is normally installed on a DIN rail inside electrical switchboards, industrial control panels and OEM equipment enclosures.
Mersen Surge-Trap® surge protection devices are trusted by panel builders, automation engineers and maintenance professionals to provide reliable protection for critical industrial and commercial electrical systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...