Mersen 83020150 STPT2-40K150V-4P Type 2 surge protection device with 40 kA maximum discharge current, 20 kA nominal discharge current, 150 V AC Uc, 120/208 V AC operation, 4+0 TNS configuration and four-pole pluggable DIN rail construction.
Original price was: £146.46.£108.24Current price is: £108.24.
The Mersen 83020150 STPT2-40K150V-4P is a dependable Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by switching operations and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable protection for commercial, industrial and infrastructure power distribution systems.
This pluggable SPD is built for fast installation, practical maintenance and long-term protection of connected electrical equipment. Its modular cartridge design allows replacement modules to be changed quickly, helping reduce downtime while maintaining effective surge protection across the installation.
With a 40 kA maximum discharge current, 150 V AC maximum continuous operating voltage and 4+0 TNS configuration, the Mersen 83020150 is suitable for 120/208 V AC three-phase plus neutral systems. Its four-pole, four-module DIN rail format makes it ideal for installation inside distribution boards and control panels.
Type 2 surge protection devices are installed in distribution boards and control panels to limit transient overvoltages before they reach sensitive connected equipment. They help protect automation controls, power supplies, monitoring devices, drives and building electrical systems from damaging voltage spikes.
The Mersen STPT2-40K150V-4P combines strong surge discharge performance with a practical pluggable construction, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on commercial and industrial power distribution systems.
| Voltage | 208 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K150V-4P |
| Part number | 83020150 |
| Product type | Type 2 surge protection device |
| SPD type | Type 2 / Class II |
| Maximum discharge current (Imax) | 40 kA |
| Nominal discharge current (In) | 20 kA |
| Waveform | 8/20 μs |
| Nominal operating voltage | 120 / 208 V AC |
| Maximum continuous operating voltage (Uc) | 150 V AC |
| Electrical system | 3-phase + neutral |
| Configuration | 4+0 TNS |
| Number of poles | 4 |
| Module width | 4 modules |
| Format | Pluggable |
| Mounting type | DIN rail |
| Indication system | Visual status indication |
| Protection rating | IP20 |
| Replacement plug L-N | SP2-40K150V |
| Standards | IEC 61643-11, EN 61643-11, UL 1449 |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83020150 is used to protect low-voltage electrical installations from transient overvoltages caused by switching events and indirect lightning activity.
It is a Type 2 / Class II surge protection device designed for installation in electrical distribution boards and control panels.
The device has a maximum discharge current of 40 kA with an 8/20 μs surge waveform.
The Mersen 83020150 is suitable for 120/208 V AC three-phase plus neutral TNS systems using a 4+0 configuration.
Yes. The STPT2-40K150V-4P has a pluggable four-module design, allowing protection cartridges to be replaced quickly during maintenance.
Mersen Surge-Trap® surge protection devices are trusted by electrical contractors, panel builders and industrial engineers to help protect critical power distribution systems from 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...