Mersen 83230120 STPT23-20K275V-3P-LF Type 2+3 leakage current free surge protection device with 20 kA maximum discharge current and 275 V AC maximum continuous operating voltage for 400 V AC three-phase TNC systems.
Original price was: £97.92.£72.37Current price is: £72.37.
The Mersen 83230120 is a high-performance Type 2+3 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by lightning activity and electrical switching events. Part of the Mersen Surge-Trap® Pluggable STPT23 LF Series, it provides dependable protection for industrial, commercial and OEM electrical systems.
This 3-pole pluggable SPD is designed for 400 V AC three-phase TNC systems using a 3+0 configuration. It features leakage current free (LF) technology, making it suitable for installations where compatibility with Power Line Communication systems is important.
With a 20 kA maximum discharge current (Imax), 10 kA nominal discharge current (In) and a 275 V AC maximum continuous operating voltage (Uc), the Mersen 83230120 is ideal for protecting PLCs, variable speed drives, power supplies, control panels, instrumentation and sensitive automation equipment.
Surge protection devices help prevent damaging transient overvoltages from reaching sensitive electrical equipment by safely diverting surge energy away from connected loads. This helps reduce equipment failure, nuisance faults, data loss and unplanned downtime.
The Mersen 83230120 is designed for three-phase panel-mounted surge protection where dependable performance and Power Line Communication compatibility are required. Its pluggable LF construction supports efficient maintenance and long-term reliability in demanding electrical installations.
| Voltage | 400 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 LF Series |
| Model | STPT23-20K275V-3P-LF |
| SKU | 83230120 |
| Product type | Surge Protection Device |
| SPD classification | Type 2+3 / Class II + III |
| Nominal operating voltage | 400 V AC |
| Maximum continuous operating voltage | 275 V AC |
| Configuration | 3+0 TNC |
| Number of poles | 3 poles |
| Format | Pluggable, 3 modules |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Nominal discharge current (In) | 10 kA (8/20 μs) |
| Combined voltage pulse (Uoc) | 10 kV |
| Leakage current free | Yes |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83230120 is used to protect three-phase low-voltage electrical systems and sensitive electronic equipment from transient overvoltages.
It is a Type 2+3 / Class II + III surge protection device from the Mersen Surge-Trap® Pluggable STPT23 LF Series.
LF stands for Leakage Current Free, making the device suitable for installations using Power Line Communication technology.
It is designed for 400 V AC three-phase TNC systems using a 3+0 configuration.
It is designed for DIN rail installation inside electrical panels, distribution boards, switchboards and OEM machinery enclosures.
Mersen Surge-Trap® surge protection devices are widely used by electrical engineers, panel builders and maintenance professionals to protect critical power distribution and automation equipment from damaging transient overvoltages.
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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...