Mersen STPT2-40K150V-1PM Type 2 surge protection device featuring 40 kA maximum discharge current, 150 V AC Uc, remote indication and pluggable DIN rail mounting.
Original price was: £45.49.£33.62Current price is: £33.62.
The Mersen 83020105 is a robust Type 2 surge protection device (SPD) designed to protect low voltage electrical installations against transient overvoltages caused by switching operations and indirect lightning events. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it delivers dependable protection for commercial, industrial and automation applications while offering convenient maintenance through its pluggable construction.
Designed for single phase 120 V AC L-N systems, the STPT2-40K150V-1PM provides a 40 kA maximum discharge current (Imax), 20 kA nominal discharge current (In) and includes a remote indication contact for integration into monitoring systems. The replaceable cartridge allows fast servicing with minimal disruption to electrical installations.
With a 150 V AC maximum continuous operating voltage (Uc), compact DIN rail mounting and compliance with EN/IEC 61643-11 and UL 1449, the Mersen 83020105 is an excellent choice for protecting sensitive electrical equipment, control panels and distribution boards.
Type 2 surge protection devices divert damaging transient overvoltages away from connected equipment, helping reduce failures caused by switching events and indirect lightning activity. Installing a quality SPD improves system reliability and helps extend the service life of electrical equipment.
The Mersen STPT2 Series combines high surge capacity with a replaceable protection cartridge and remote signalling, making it an ideal solution for installations where reliability and easy maintenance are essential.
| Voltage | 120 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K150V-1PM |
| SKU | 83020105 |
| Product type | Type 2 Surge Protection Device |
| SPD class | Type 2 / Class II |
| Nominal operating voltage | 120 V AC |
| Maximum continuous operating voltage (Uc) | 150 V AC |
| Maximum discharge current (Imax) | 40 kA |
| Nominal discharge current (In) | 20 kA |
| Configuration | 1 Phase L-N |
| Number of poles | 1 Pole |
| Mounting type | DIN rail |
| Assembly format | Pluggable |
| Remote indication | Yes |
| Protection rating | IP20 |
| Standards | EN/IEC 61643-11, UL 1449 |
| Replacement cartridge | SP2-40K150V |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects low voltage electrical systems from transient overvoltages caused by switching operations and indirect lightning strikes.
The 83020105 is a Type 2 / Class II surge protection device with a pluggable module.
Yes. The STPT2-40K150V-1PM includes an integrated remote indication contact for status monitoring.
It is designed for 120 V AC systems with a 150 V AC maximum continuous operating voltage (Uc).
Yes. The pluggable cartridge design allows quick replacement after end of life without changing the complete device.
Mersen Surge-Trap® surge protection devices are widely trusted by electrical engineers, panel builders and maintenance professionals for dependable protection of critical electrical and automation systems.
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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...