Standard delivery
£8 ex VAT · free over £200UK parcel delivery is £8 ex VAT, or free on orders over £200 ex VAT.
Heavier items may be charged at a weight-based or pallet rate, shown at checkout.
Mersen Surge Protector Type 2 SPD 1 Pole 120 Volt 20KA L-N
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.
£28.91
Why Choose the Mersen 83020104 Surge Protection Device?
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.
Key Advantages
- Compact Type 2 surge protection device for low voltage power systems.
- 40 kA maximum discharge current for dependable surge protection.
- 150 V AC Uc rating for 120 V L-N applications.
- Pluggable cartridge design for quick maintenance and replacement.
- DIN rail mounting for straightforward panel installation.
- Suitable for commercial, industrial and electrical distribution applications.
Key Features
- Mersen Surge-Trap® Pluggable STPT2 Series.
- Type 2 / Class II surge protection.
- 40 kA Imax (8/20).
- 20 kA nominal discharge current.
- 150 V AC Uc rating.
- 120 V nominal operating voltage.
- Single phase L-N configuration.
- 1 pole, 1 module pluggable design.
Reliable Protection Against Transient Overvoltages
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.
Typical Applications
- Single phase 120 V electrical distribution systems.
- Commercial distribution boards.
- Industrial control panels.
- Automation and control equipment.
- Power line surge protection.
- Electrical equipment protection in low voltage installations.
Technical Specifications
Tick the specs you need, then view products that match.
| 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 | No | |
| 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 | TN-S, TN-C, TT | |
| 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 |
Frequently Asked Questions
What is the Mersen 83020104 used for?
It is used to protect low voltage electrical installations and equipment from transient overvoltages and surge events.
What type of SPD is the Mersen 83020104?
The Mersen 83020104 is a Type 2 / Class II surge protection device.
What is the discharge rating of this surge protector?
It has a maximum discharge current rating of 40 kA Imax (8/20) and a nominal discharge current of 20 kA.
What voltage is the Mersen 83020104 designed for?
It is designed for 120 V AC L-N systems with a 150 V AC maximum continuous operating voltage.
Is the Mersen 83020104 pluggable?
Yes. It has a pluggable cartridge design, allowing quick replacement of the protection module when required.
Trusted by Electrical Professionals Worldwide
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.
