Mersen 83020152 STPT2-40K275V-4P Type 2 surge protection device with 40 kA maximum discharge current, 20 kA nominal discharge current, 275 V AC Uc, 230/400 V AC operation, 4+0 TNS configuration and four-pole pluggable DIN rail construction.
£131.67
The Mersen 83020152 STPT2-40K275V-4P is a dependable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable protection for commercial, industrial and infrastructure power distribution systems.
This pluggable surge arrester is designed for straightforward installation, fast cartridge replacement and long-term protection of sensitive electrical equipment. Its modular construction helps reduce maintenance time, while visual indication provides clear status monitoring for the protection modules.
With a 40 kA maximum discharge current, 275 V AC maximum continuous operating voltage and 4+0 TNS configuration, the Mersen 83020152 is suitable for 230/400 V AC three-phase plus neutral systems. Its four-pole, four-module DIN rail format makes it ideal for 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, drives, monitoring devices and building electrical systems from damaging voltage spikes.
The Mersen STPT2-40K275V-4P combines strong surge discharge performance with a practical pluggable construction, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on commercial and industrial power distribution systems.
| Voltage | 400 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K275V-4P |
| Part number | 83020152 |
| EAN / UPC | 8435297851172 |
| 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 | 230 / 400 V AC |
| Maximum continuous operating voltage (Uc) | 275 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 | No |
| Protection rating | IP20 |
| Operating temperature | -40°C to +80°C |
| Dimensions (H × W × D) | approx. 90 × 72 × 70 mm |
| Standards | IEC 61643-11, EN 61643-11, UL 1449 4th Edition |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83020152 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 83020152 is suitable for 230/400 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Yes. The STPT2-40K275V-4P has a pluggable four-module design, allowing protection cartridges to be replaced quickly during maintenance.
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...