Mersen STPT2-40K60V-2PM Type 2 surge protection device with 40 kA maximum discharge current, 48 V AC nominal voltage, 60 V AC maximum continuous operating voltage, pluggable DIN rail construction and remote indication.
£102.47
The Mersen STPT2-40K60V-2PM (Part Number 83020129) is a high-performance Type 2 surge protection device (SPD) engineered to safeguard low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events. As part of the trusted Mersen Surge-Trap® Pluggable STPT2 Series, it delivers dependable protection for industrial, commercial and infrastructure applications.
Featuring a 40 kA maximum discharge current (Imax), pluggable modular construction and an integrated remote indication contact, this SPD allows rapid maintenance while enabling remote monitoring of device status via building management systems, PLCs or alarm circuits.
Designed for 48 V AC systems with a 2+0 TNS (1Ph+N) configuration, the STPT2-40K60V-2PM is ideal for protecting automation equipment, telecommunications systems, control panels, signalling circuits and critical low-voltage electrical installations.
Type 2 surge protection devices reduce the risk of damage caused by transient overvoltages generated by lightning strikes and switching operations. Installing an SPD helps improve system reliability, minimise equipment downtime and extend the service life of valuable electrical assets.
The Mersen Surge-Trap® STPT2 Series combines high surge capacity with replaceable pluggable cartridges, visual status indication and remote monitoring, making it an excellent solution for installations requiring efficient preventative maintenance.
| Phase | Single Phase |
|---|---|
| Manufacturer | Mersen |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA |
| Model | STPT2-40K60V-2PM |
| Part Number | 83020129 |
| Product type | Type 2 Surge Protection Device |
| IEC Classification | Class II |
| Maximum discharge current (Imax) | 40 kA (8/20 μs) |
| Nominal discharge current (In) | 20 kA (8/20 μs) |
| Nominal operating voltage (Un) | 48 V AC |
| Maximum continuous operating voltage (Uc) | 60 V AC |
| Configuration | 1Ph+N, 2+0 TNS |
| Number of poles | 2 |
| Modules | 2 |
| Mounting type | DIN rail |
| Construction | Pluggable |
| Remote indication | Yes |
| Protection rating | IP20 |
| Short circuit withstand (ISCCR) | 25 kA |
| Maximum back-up fuse | 125 A gG |
| RoHS compliant | Yes |
| HS Code | 85363090 |
| Country of Manufacture | Spain |
It protects low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching events.
The STPT2-40K60V-2PM is a Type 2 / Class II surge protection device designed for low-voltage electrical distribution systems.
Yes. It features an integrated remote indication contact that allows the operational status of the SPD to be monitored remotely.
It is designed for 48 V AC systems using a 1Ph+N, 2+0 TNS configuration.
The SPD mounts directly onto a standard DIN rail and features replaceable pluggable protection modules for simplified servicing.
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to provide dependable protection for critical industrial and commercial electrical installations.
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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...