Mersen STPT2-40K320V-1P Type 2 surge protection device with 40 kA maximum discharge current, 320 V AC Uc, 277 V L-N configuration and pluggable DIN rail mounting.
Original price was: £35.61.£28.49Current price is: £28.49.
The Mersen 83020108 is a high performance Type 2 surge protection device (SPD) designed to protect low voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning strikes. Part of the trusted Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for commercial, industrial and automation applications.
Designed for 277 V AC single phase L-N systems, the STPT2-40K320V-1P delivers a 40 kA maximum discharge current (Imax) and 20 kA nominal discharge current (In), helping protect sensitive equipment from damaging electrical surges. Its pluggable construction allows the protection module to be replaced quickly, reducing maintenance time and system disruption.
With a 320 V AC maximum continuous operating voltage (Uc), compact 1 pole, 1 module format and DIN rail mounting, the Mersen 83020108 is ideal for protecting distribution boards, control panels, automation equipment and low voltage electrical systems.
Type 2 surge protection devices help divert transient overvoltages away from connected equipment, reducing the risk of electrical failures, component damage and costly downtime. They are commonly installed in distribution systems where reliable protection for downstream equipment is required.
The Mersen Surge-Trap® STPT2 Series combines strong surge handling capability with a compact DIN rail format and replaceable pluggable cartridge, making it a practical solution for industrial, commercial and automation environments.
| Voltage | 277 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40 kA |
| Model | STPT2-40K320V-1P |
| SKU | 83020108 |
| Product type | Type 2 Surge Protection Device |
| SPD class | Type 2 / Class II |
| Nominal operating voltage | 277 V AC |
| Maximum continuous operating voltage (Uc) | 320 V AC |
| Maximum discharge current (Imax) | 40 kA |
| Nominal discharge current (In) | 20 kA |
| Configuration | 1 Phase L-N |
| Number of poles | 1 Pole |
| Module width | 1 Module |
| Assembly format | Pluggable |
| Mounting type | DIN rail |
| Protection rating | IP20 |
| Voltage protection level (Up) | ≤ 1.5 kV |
| Standards | EN/IEC 61643-11, UL 1449 |
| Replacement cartridge | SP2-40K320V |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect low voltage electrical systems from transient overvoltages caused by switching operations and indirect lightning strikes.
The Mersen 83020108 is a Type 2 / Class II surge protection device with a pluggable module.
It is designed for 277 V AC single phase L-N systems with a 320 V AC maximum continuous operating voltage.
The device provides a 40 kA maximum discharge current (Imax) and a 20 kA nominal discharge current (In).
Yes. The pluggable cartridge design allows quick replacement when required without replacing the complete surge protection assembly.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to protect critical electrical infrastructure against damaging transient overvoltages.
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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...