Mersen STPT2-40K320V-2PM Type 2 surge protection device with 40 kA Imax, 320 V AC Uc, 1Ph+N 2+0 TNS configuration, 2-pole pluggable DIN rail design and remote indication.
£86.75
The Mersen STPT2-40K320V-2PM is a high-performance Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by lightning activity and switching operations. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable surge protection for industrial, commercial and infrastructure electrical systems.
This device features a 40 kA maximum discharge current, 320 V AC maximum continuous operating voltage and a compact pluggable modular design for fast installation and maintenance. The integrated remote indication contact enables condition monitoring from control panels, BMS systems or external signalling circuits.
With a 1Ph+N configuration, 2+0 TNS network arrangement and 2-pole DIN rail format, the STPT2-40K320V-2PM is well suited to distribution boards, control panels, automation systems and electrical installations requiring dependable Type 2 surge protection.
Type 2 surge protection devices help reduce the risk of equipment damage by limiting transient overvoltages within electrical distribution systems. They are commonly used downstream of Type 1 protection, or as primary protection in installations not exposed to direct lightning strikes.
The Mersen STPT2 pluggable range is designed for practical panel installation, with replaceable protection modules and clear monitoring options that support preventative maintenance and reduce system downtime.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K320V-2PM |
| Item number | 83020125 |
| Product type | Surge protection device |
| SPD type | Type 2 / Class II |
| Maximum discharge current | 40 kA Imax (8/20 μs) |
| Nominal operating voltage | 277 V AC |
| Maximum continuous operating voltage | 320 V AC |
| Network configuration | 1Ph+N, 2+0 TNS |
| Number of poles | 2 poles |
| Module width | 2 modules |
| Format | Pluggable |
| Remote indication | Yes |
| Mounting type | DIN rail |
| RoHS compliant | Yes |
| EAN / UPC | 8435297851080 |
| 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 and switching events.
The STPT2-40K320V-2PM is a Type 2 / Class II surge protection device for electrical distribution systems.
This SPD has a 40 kA Imax maximum discharge current rating using an 8/20 μs waveform.
Yes. The STPT2-40K320V-2PM includes remote indication, allowing the SPD status to be monitored through external signalling or control systems.
It is typically installed on a DIN rail inside electrical distribution boards, control panels and low-voltage switchgear assemblies.
Mersen Surge-Trap® surge protection devices are widely used by panel builders, electrical contractors and maintenance engineers to protect critical low-voltage installations against 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...