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Mersen Surge Protector Type 2 SPD 1 Pole Neutral 20KA N-PE
Mersen STPT2-40K-N Type 2 surge protection device with 40 kA maximum discharge current, neutral N-PE protection, pluggable DIN rail mounting and compact 1 module design.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-1PG Mersen Surge Protector Type 2 SPD 1 Pole Neutral 20KA N-PE
SKU: 44020100
£34.85 ex VAT
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Why Choose the Mersen 83020112 Surge Protection Device?
The Mersen 83020112 is a compact Type 2 surge protection device (SPD) designed to protect low voltage electrical installations from transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT2 Series, it is specifically designed as a neutral protection module for surge protection assemblies and TT system configurations.
The STPT2-40K-N provides a 40 kA maximum discharge current (Imax) and 20 kA nominal discharge current (In), helping divert damaging surge energy safely away from connected electrical equipment. Its pluggable format allows fast cartridge replacement, simplifying maintenance and reducing downtime after surge events.
With a compact 1 pole, 1 module DIN rail mounting design and reliable neutral protection performance, the Mersen 83020112 is ideal for use in coordinated surge protection systems within distribution boards, control panels and commercial or industrial electrical installations.
Key Advantages
- Compact Type 2 surge protection device for neutral protection.
- 40 kA maximum discharge current (Imax).
- 20 kA nominal discharge current (In).
- Designed for N-PE neutral protection applications.
- Pluggable module for fast replacement and reduced maintenance time.
- DIN rail mounting for straightforward panel installation.
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).
- Neutral protection module.
- Suitable for TT surge protection configurations.
- 1 pole, 1 module design.
- Compact pluggable DIN rail format.
Reliable Neutral Protection Against Electrical Surges
Neutral surge protection modules are used within coordinated SPD systems to help manage transient overvoltages between neutral and protective earth. This helps protect downstream equipment from surge damage while supporting safer and more reliable electrical distribution.
The Mersen Surge-Trap® STPT2 Series combines high surge handling capability with a compact pluggable cartridge design, making it a practical solution for electrical distribution boards, control panels and industrial low voltage installations.
Typical Applications
- TT system surge protection assemblies.
- Commercial electrical distribution boards.
- Industrial control panels.
- PLC and automation systems.
- Building electrical services.
- Low voltage power distribution equipment.
Technical Specifications
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| Phase | Single Phase | |
|---|---|---|
| Poles | 1-pole | |
| Device Type | Surge protection device | |
| SPD Type | Type 2 | |
| Earthing System | TN-S, TT | |
| Nominal Discharge Current (In) | 20 kA | |
| Remote Signal | Yes | |
| Manufacturer | Mersen | |
| Series | Surge-Trap® Pluggable STPT2 Series - 40 kA | |
| Model | STPT2-40K-N | |
| SKU | 83020112 | |
| Product type | Type 2 Surge Protection Device | |
| SPD class | Type 2 / Class II | |
| Protection mode | N-PE | |
| Application | Neutral protection | |
| Maximum discharge current (Imax) | 40 kA | |
| Nominal Discharge Current (In) | 20 kA | |
| Configuration | TN-S, TT | |
| Number of poles | 1 Pole | |
| Module width | 1 Module | |
| Assembly format | Pluggable | |
| Mounting type | DIN rail | |
| Protection rating | IP20 | |
| Voltage protection level (N-PE) | ≤ 1.5 kV | |
| Standards | EN/IEC 61643-11, UL 1449 | |
| Replacement cartridge | SP2-40K-N | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020112 used for?
It is used as a neutral surge protection module to protect electrical systems against transient overvoltages between neutral and protective earth.
What type of surge protection device is it?
The Mersen 83020112 is a Type 2 / Class II surge protection device with a pluggable module.
What is the maximum surge current rating?
The device provides a 40 kA maximum discharge current (Imax) and a 20 kA nominal discharge current (In).
Is this device suitable for TT systems?
Yes. The STPT2-40K-N is commonly used as a neutral protection module in TT surge protection configurations.
Can the protection cartridge be replaced?
Yes. The pluggable cartridge design allows quick replacement when required without replacing the complete surge protection assembly.
Trusted by Electrical Professionals Worldwide
Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to protect critical electrical infrastructure against damaging transient overvoltages.
