Mersen 83230125 STPT23-20K150V-4PGM Type 2+3 surge protection device with 20 kA discharge capacity, remote indication and 3+1 TT configuration for 120/208 V AC systems.
Original price was: £136.89.£101.17Current price is: £101.17.
The Mersen 83230125 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 Series, this device delivers dependable protection for three-phase plus neutral electrical systems operating in commercial, industrial and automation environments.
Designed for DIN rail installation, this pluggable SPD combines excellent surge handling capability with a compact modular design for quick maintenance and replacement. The integrated remote indication contact enables continuous monitoring of the device status, helping maintenance teams minimise downtime.
With a maximum discharge current of 20 kA (8/20 μs), a 150 V AC continuous operating voltage (Uc) and a 3+1 TT configuration, the Mersen 83230125 is ideal for protecting distribution boards, machinery control panels and sensitive electrical equipment operating on 120/208 V AC systems.
Surge protection devices safely divert transient overvoltages away from connected electrical equipment before they can cause damage or unplanned downtime. Installing an SPD helps improve system reliability while extending the operational life of sensitive electronic equipment.
The Mersen Surge-Trap® STPT23 Series is designed as a final stage of protection close to critical equipment, making it suitable for industrial control panels, switchboards, automation systems and commercial electrical installations.
| Voltage | 208 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT23 Series |
| Model | STPT23-20K150V-4PGM |
| SKU | 83230125 |
| 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 |
| Continuous operating voltage (Uc) | 150 V AC (L-N), 255 V (N-PE) |
| Nominal operating voltage (Un) | 120/208 V AC |
| System configuration | 3+1 TT |
| Number of poles | 4 |
| Number of modules | 4 |
| Mounting type | DIN rail |
| Remote indication | Yes |
| Replacement plug L-N | SP23-20K150V |
| Replacement plug N-PE | SP23-20K-N |
| Protection rating | IP20 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects low voltage electrical installations and connected equipment against transient overvoltages caused by lightning and switching events.
The Mersen 83230125 is an IEC Type 2+3 (Class II+III) surge protection device.
It is designed for 120/208 V AC three-phase plus neutral TT systems using a 3+1 configuration.
Yes. It includes a remote indication contact that enables the device status to be monitored remotely.
Yes. The pluggable cartridge design allows rapid replacement during maintenance without replacing the complete base.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and industrial maintenance teams to safeguard 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...