Mersen 83020147 STPT2-40K275V-4PGM Type 2 surge protection device with 40 kA maximum discharge current, 275 V AC Uc, 230/400 V AC operation, 3+1 TT configuration, four-pole pluggable construction and remote indication.
£159.17
The Mersen 83020147 STPT2-40K275V-4PGM is a robust Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable surge protection for commercial, industrial and infrastructure power distribution systems.
This pluggable SPD is engineered for easy installation, fast cartridge replacement and reliable long-term operation. Its modular construction helps reduce maintenance time, while visual status indication and remote indication support make it suitable for monitored electrical systems where equipment protection and uptime are critical.
With a 40 kA maximum discharge current, 275 V AC maximum continuous operating voltage and 3+1 TT configuration, the Mersen 83020147 is ideal for three-phase plus neutral electrical installations. Its four-pole, four-module format is designed for DIN rail mounting inside distribution boards and control panels.
Type 2 surge protection devices are used within distribution boards and control panels to limit transient overvoltages before they reach sensitive electrical equipment. They help protect automation systems, power supplies, drives, controls and connected devices from damage caused by voltage spikes.
The Mersen STPT2-40K275V-4PGM combines high surge discharge capacity with practical maintenance features, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on commercial and industrial installations.
| Voltage | 400 V |
|---|---|
| Phase | Three Phase |
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K275V-4PGM |
| Part number | 83020147 |
| Product type | Type 2 surge protection device |
| SPD type | Type 2 / Class II |
| Maximum discharge current (Imax) | 40 kA |
| Waveform | 8/20 μs |
| Nominal system voltage | 230 / 400 V AC |
| Maximum continuous operating voltage (Uc) | 275 V AC |
| Electrical system | 3-phase + neutral |
| Configuration | 3+1 TT |
| Number of poles | 4 |
| Module width | 4 modules |
| Format | Pluggable |
| Mounting type | DIN rail |
| Remote indication | Yes |
| Protection rating | IP20 |
| Operating temperature | -40°C to +80°C |
| Dimensions (H × W × D) | approx. 90 × 72 × 70 mm |
| Standards | IEC 61643-11, EN 61643-11, UL 1449 4th Edition |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
The Mersen 83020147 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 83020147 is suitable for 230/400 V AC three-phase plus neutral TT systems using a 3+1 configuration.
Yes. The STPT2-40K275V-4PGM includes remote indication capability for monitoring the end-of-life status of the surge protection device.
Mersen Surge-Trap® surge protection devices are trusted by electrical contractors, panel builders and industrial engineers to help protect critical power distribution systems 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...