Mersen 83230137 STPT23-20K275V-4P-LFM Type 2+3 leakage current free surge protection device with 20 kA discharge capacity, 275 V AC continuous operating voltage, 4+0 TNS configuration and remote indication.
£152.60
The Mersen 83230137 is a high performance Type 2+3 Surge Protection Device (SPD) designed to protect low voltage electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT23 LF Series, this leakage current free device provides reliable protection for three-phase plus neutral TNS systems in commercial, industrial and automation environments.
Engineered for DIN rail installation, this pluggable SPD helps protect sensitive electrical equipment from voltage spikes caused by lightning activity, switching operations and network disturbances. Its modular construction supports quick replacement, while the integrated remote indication contact enables easy monitoring of device status.
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 83230137 is ideal for protecting switchboards, distribution boards, control panels, PLCs, drives and industrial machinery operating on 230/400 V AC electrical systems.
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 resilience and extends the service life of sensitive electrical and automation equipment.
The Mersen Surge-Trap® STPT23 LF Series is designed as a final stage of protection in low voltage installations where upstream protection is already installed, making it suitable for switchboards, control panels, building services and industrial machinery systems.
| Voltage | 400 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 LF Series |
| Model | STPT23-20K275V-4P-LFM |
| SKU | 83230137 |
| Product type | Surge Protection Device (SPD) |
| SPD classification | Type 2+3 / Class II+III |
| Maximum discharge current (Imax) | 20 kA (8/20 μs) |
| Continuous operating voltage (Uc) | 275 V AC |
| Nominal operating voltage (Un) | 230/400 V AC |
| System configuration | 4+0 TNS |
| Network type | 3-phase + neutral |
| Number of poles | 4 |
| Number of modules | 4 |
| Mounting type | DIN rail |
| Format | Pluggable modular device |
| Remote indication | Yes |
| Leakage current free | Yes |
| Standards | EN/IEC 61643-11 |
| Protection rating | IP20 |
| Dimensions (H × W × D) | approx. 90 × 72 × 70 mm |
| EAN/UPC | 8435297852377 |
| RoHS compliant | Yes |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect low voltage electrical installations and connected equipment from transient overvoltages caused by lightning activity, switching events and electrical disturbances.
The Mersen 83230137 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 device includes remote indication, allowing the operational status of the SPD to be monitored from an electrical panel or control system.
Yes. It is part of the leakage current free STPT23 LF Series, helping reduce continuous leakage current during normal operation.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and industrial maintenance teams to protect critical electrical infrastructure from damaging transient overvoltages.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...