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Mersen Surge Protector Type 2 SPD 1 Pole 120 Volt 20KA L-N Remote Indication
Mersen STPT2-40K150V-1PM Type 2 surge protection device featuring 40 kA maximum discharge current, 150 V AC Uc, remote indication and pluggable DIN rail mounting.
£34.12
Why Choose the Mersen 83020105 Surge Protection Device?
The Mersen 83020105 is a robust Type 2 surge protection device (SPD) designed to protect low voltage electrical installations against transient overvoltages caused by switching operations and indirect lightning events. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it delivers dependable protection for commercial, industrial and automation applications while offering convenient maintenance through its pluggable construction.
Designed for single phase 120 V AC L-N systems, the STPT2-40K150V-1PM provides a 40 kA maximum discharge current (Imax), 20 kA nominal discharge current (In) and includes a remote indication contact for integration into monitoring systems. The replaceable cartridge allows fast servicing with minimal disruption to electrical installations.
With a 150 V AC maximum continuous operating voltage (Uc), compact DIN rail mounting and compliance with EN/IEC 61643-11 and UL 1449, the Mersen 83020105 is an excellent choice for protecting sensitive electrical equipment, control panels and distribution boards.
Key Advantages
- Compact Type 2 surge protection device for low voltage installations.
- 40 kA maximum discharge current (Imax).
- 20 kA nominal discharge current (In).
- 150 V AC maximum continuous operating voltage (Uc).
- Integrated remote indication contact for monitoring.
- Pluggable cartridge for rapid maintenance and replacement.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20 μs).
- 20 kA In (8/20 μs).
- 120 V AC nominal operating voltage.
- 150 V AC Uc.
- Single pole, single module design.
- Remote indication and DIN rail mounting.
Reliable Protection Against Electrical Surges
Type 2 surge protection devices divert damaging transient overvoltages away from connected equipment, helping reduce failures caused by switching events and indirect lightning activity. Installing a quality SPD improves system reliability and helps extend the service life of electrical equipment.
The Mersen STPT2 Series combines high surge capacity with a replaceable protection cartridge and remote signalling, making it an ideal solution for installations where reliability and easy maintenance are essential.
Typical Applications
- Industrial control panels.
- Commercial electrical distribution boards.
- PLC and automation systems.
- OEM machinery.
- Building electrical services.
- Power distribution equipment.
Technical Specifications
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| Voltage | 120 V | |
|---|---|---|
| Phase | Single Phase | |
| Poles | 1-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-C, TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT2 Series - 40kA | |
| Model | STPT2-40K150V-1PM | |
| SKU | 83020105 | |
| Product type | Type 2 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) | 40 kA | |
| Nominal Discharge Current (In) | 20 kA | |
| Configuration | TN-S, TN-C, TT | |
| Number of poles | 1 Pole | |
| Mounting type | DIN rail | |
| Assembly format | Pluggable | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Standards | EN/IEC 61643-11, UL 1449 | |
| Replacement cartridge | SP2-40K150V | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020105 used for?
It protects low voltage electrical systems from transient overvoltages caused by switching operations and indirect lightning strikes.
What type of surge protection device is it?
The 83020105 is a Type 2 / Class II surge protection device with a pluggable module.
Does this model include remote indication?
Yes. The STPT2-40K150V-1PM includes an integrated remote indication contact for status monitoring.
What voltage is the device designed for?
It is designed for 120 V AC systems with a 150 V AC maximum continuous operating voltage (Uc).
Can the protection cartridge be replaced?
Yes. The pluggable cartridge design allows quick replacement after end of life without changing the complete device.
Trusted by Electrical Professionals Worldwide
Mersen Surge-Trap® surge protection devices are widely trusted by electrical engineers, panel builders and maintenance professionals for dependable protection of critical electrical and automation systems.
