Mersen STPT2-40K150V-4PGM Type 2 surge protection device with 40 kA Imax, 120 / 208 V AC nominal operating voltage, 150 V AC maximum continuous operating voltage, 3+1 TT configuration, pluggable DIN rail design and remote indication.
£173.09
The Mersen STPT2-40K150V-4PGM (Part Number 83020145) is a high-performance Type 2 surge protection device (SPD) designed to protect three-phase plus neutral low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for industrial, commercial and infrastructure electrical systems.
Featuring a 40 kA maximum discharge current (Imax), 150 V AC maximum continuous operating voltage (Uc), pluggable modular construction and remote indication, this SPD supports straightforward installation, rapid cartridge replacement and external monitoring of protection status.
Designed for 120 / 208 V AC three-phase plus neutral systems with a 3+1 TT configuration, the STPT2-40K150V-4PGM is well suited to protecting automation equipment, machine control panels, commercial switchboards, building services and critical low-voltage electrical installations.
Type 2 surge protection devices are installed within electrical distribution systems to help limit transient overvoltages before they reach sensitive connected equipment. This helps reduce equipment damage, minimise downtime and improve the reliability of critical electrical systems.
The Mersen STPT2 pluggable range combines high discharge capability with replaceable cartridges, visual indication and remote monitoring, making it suitable for preventative maintenance in control panels, low-voltage switchgear and commercial distribution boards.
| Voltage | 208 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K150V-4PGM |
| Item number | 83020145 |
| Product type | Surge protection device |
| SPD type | Type 2 / Class II |
| UL SPD type | Type 2 Component Assembly |
| Maximum discharge current | 40 kA Imax (8/20 μs) |
| Nominal discharge current | 20 kA In (8/20 μs) |
| Nominal operating voltage | 120 / 208 V AC |
| Maximum continuous operating voltage | 150 V AC |
| System configuration | 3+1 TT |
| Number of poles | 4 poles |
| Module width | 4 modules |
| Format | Pluggable |
| Remote indication | Yes |
| Mounting type | DIN rail |
| RoHS compliant | Yes |
| EAN / UPC | 8435297850816 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect three-phase plus neutral low-voltage electrical installations and connected equipment against transient overvoltages caused by lightning activity and switching events.
The STPT2-40K150V-4PGM is a Type 2 / Class II surge protection device for electrical distribution and control systems.
This SPD has a 40 kA Imax maximum discharge current rating using an 8/20 μs waveform.
Yes. The STPT2-40K150V-4PGM includes remote indication, allowing the device status to be monitored through external signalling or control systems.
It is designed for 120 / 208 V AC three-phase plus neutral systems with a 150 V AC maximum continuous operating voltage.
Mersen Surge-Trap® surge protection devices are trusted by panel builders, electrical contractors and maintenance engineers to protect critical low-voltage installations 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...