Mersen 83020151 STPT2-40K150V-4PM Type 2 surge protection device with 40 kA maximum discharge current, 20 kA nominal discharge current, 150 V AC Uc, 120/208 V AC operation, 4+0 TNS configuration, four-pole pluggable DIN rail construction and remote indication.
Original price was: £171.36.£126.64Current price is: £126.64.
The Mersen 83020151 STPT2-40K150V-4PM is a reliable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by switching events and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for commercial, industrial and infrastructure power distribution systems.
This pluggable surge protection device is designed for easy installation, quick cartridge replacement and long-term protection of sensitive electrical equipment. The remote indication feature enables the SPD status to be monitored from external systems, helping maintenance teams respond quickly when replacement is required.
With a 40 kA maximum discharge current, 150 V AC maximum continuous operating voltage and 4+0 TNS configuration, the Mersen 83020151 is suitable for 120/208 V AC three-phase plus neutral systems. Its four-pole, four-module DIN rail format makes it ideal for installation inside distribution boards and industrial control panels.
Type 2 surge protection devices are installed in distribution boards and control panels to limit transient overvoltages before they reach sensitive connected equipment. They help protect automation controls, power supplies, monitoring equipment, drives and building electrical systems from damaging voltage spikes.
The Mersen STPT2-40K150V-4PM combines strong surge discharge capability with practical pluggable construction and remote indication, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on monitored commercial and industrial installations.
| Voltage | 208 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K150V-4PM |
| Part number | 83020151 |
| Product type | Type 2 surge protection device |
| SPD type | Type 2 / Class II |
| Maximum discharge current (Imax) | 40 kA |
| Nominal discharge current (In) | 20 kA |
| Waveform | 8/20 μs |
| Nominal operating voltage | 120 / 208 V AC |
| Maximum continuous operating voltage (Uc) | 150 V AC |
| Electrical system | 3-phase + neutral |
| Configuration | 4+0 TNS |
| Number of poles | 4 |
| Module width | 4 modules |
| Format | Pluggable |
| Mounting type | DIN rail |
| Remote indication | Yes |
| Protection rating | IP20 |
| Replacement plug L-N | SP2-40K150V |
| Standards | IEC 61643-11, EN 61643-11, UL 1449 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83020151 is used to protect low-voltage electrical installations from transient overvoltages caused by switching events and indirect lightning activity.
It is a Type 2 / Class II surge protection device designed for installation in electrical distribution boards and control panels.
The device has a maximum discharge current of 40 kA with an 8/20 μs surge waveform.
The Mersen 83020151 is suitable for 120/208 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Yes. The STPT2-40K150V-4PM includes remote indication, allowing the SPD status to be monitored from external systems or control equipment.
Mersen Surge-Trap® surge protection devices are trusted by electrical contractors, panel builders and industrial engineers to help protect critical power distribution systems 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...