Mersen STPT2-40K150V-1P Type 2 surge protection device with 40 kA maximum discharge current, 150 V AC Uc rating, 120 V L-N configuration and pluggable DIN rail mounting design.
£38.54
The Mersen 83020104 is a compact and reliable Type 2 surge protection device (SPD) designed to protect low voltage electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT2 Series, this device is engineered for power line surge protection in commercial, industrial and electrical distribution applications.
This surge protection device is designed for single phase 120 V L-N systems and provides a high 40 kA maximum discharge current (Imax 8/20). Its pluggable construction allows fast replacement of the protection cartridge, helping reduce downtime after surge events and simplifying maintenance in electrical panels.
With a 150 V AC maximum continuous operating voltage (Uc), 1 pole configuration and compact 1 module DIN rail mounting format, the Mersen 83020104 is ideal for protecting sensitive electrical equipment, control circuits and distribution systems from damaging voltage spikes.
Surge protection devices help reduce the risk of damage caused by voltage spikes from switching operations, grid disturbances and indirect lightning effects. By diverting surge energy away from connected equipment, a Type 2 SPD helps improve system reliability and protects sensitive electrical components.
The Mersen Surge-Trap® Pluggable STPT2 Series is designed for fast installation, dependable operation and simple maintenance. Its replaceable cartridge format allows the protection element to be changed quickly, making it a practical solution for distribution boards, control panels and low voltage electrical systems.
| Voltage | 120 V |
|---|---|
| Phase | Single Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K150V-1P |
| SKU | 83020104 |
| Product type | 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 8/20) | 40 kA |
| Nominal discharge current (In 8/20) | 20 kA |
| Configuration | 1 phase, L-N |
| Number of poles | 1 pole |
| Module width | 1 module |
| Assembly format | Pluggable |
| Mounting type | DIN rail |
| Standards | EN/IEC 61643-11, UL 1449 |
| Replacement plug | SP2-40K150V |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It is used to protect low voltage electrical installations and equipment from transient overvoltages and surge events.
The Mersen 83020104 is a Type 2 / Class II surge protection device.
It has a maximum discharge current rating of 40 kA Imax (8/20) and a nominal discharge current of 20 kA.
It is designed for 120 V AC L-N systems with a 150 V AC maximum continuous operating voltage.
Yes. It has a pluggable cartridge design, allowing quick replacement of the protection module when required.
Mersen Surge-Trap® surge protection devices are trusted by panel builders, electrical engineers and maintenance teams to protect sensitive equipment, improve system reliability and reduce the risk of downtime caused by 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...