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Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N Remote Indication
Mersen STPT2-40K440V-1PM Type 2 surge protection device with 40 kA maximum discharge current, 440 V AC Uc, 400 V AC single phase configuration, remote indication and pluggable DIN rail mounting.
This product has been discontinued
A direct replacement is available below.
Replacement product
K2-1P440-M Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N Remote Indication
SKU: 44020111
£34.12 ex VAT
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Why Choose the Mersen 83020111 Surge Protection Device?
The Mersen 83020111 is a dependable Type 2 surge protection device (SPD) designed to protect low voltage electrical installations from transient overvoltages caused by switching operations, grid disturbances and indirect lightning effects. Part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable protection for commercial, industrial and automation environments.
Designed for 400 V AC single phase L-N systems, the STPT2-40K440V-1PM delivers a 40 kA maximum discharge current (Imax) and 20 kA nominal discharge current (In). This model also includes remote indication, allowing the operational status of the surge protection device to be monitored from a panel, alarm circuit or control system.
With a 440 V AC maximum continuous operating voltage (Uc), compact 1 pole, 1 module pluggable construction and DIN rail mounting, the Mersen 83020111 is ideal for protecting switchboards, distribution boards, industrial control panels and sensitive electrical equipment.
Key Advantages
- Compact Type 2 surge protection device for low voltage installations.
- 40 kA maximum discharge current (Imax).
- 20 kA nominal discharge current (In).
- 440 V AC maximum continuous operating voltage (Uc).
- Integrated remote indication for SPD status monitoring.
- Pluggable module for quick replacement and reduced maintenance time.
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).
- 400 V AC nominal operating voltage.
- 440 V AC Uc.
- Remote indication contact.
- 1 pole, 1 module DIN rail mounted design.
Reliable Protection Against Electrical Surges
Type 2 surge protection devices help divert transient overvoltages away from connected equipment, reducing the risk of component damage, nuisance failures and costly downtime. They are commonly used as part of a coordinated protection strategy in low voltage distribution systems.
The Mersen Surge-Trap® STPT2 Series combines high surge handling capability with a compact DIN rail format, replaceable pluggable cartridge and monitoring options, making it a practical solution for demanding electrical installations.
Typical Applications
- Industrial control panels.
- Commercial electrical distribution boards.
- PLC and automation systems.
- Building electrical services.
- OEM machinery.
- Low voltage power distribution equipment.
Technical Specifications
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| Voltage | 400 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 - 40 kA | |
| Model | STPT2-40K440V-1PM | |
| SKU | 83020111 | |
| Product type | Type 2 Surge Protection Device | |
| SPD class | Type 2 / Class II | |
| Nominal operating voltage | 400 V AC | |
| Maximum continuous operating voltage (Uc) | 440 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 | |
| Module width | 1 Module | |
| Assembly format | Pluggable | |
| Mounting type | DIN rail | |
| Remote indication | Yes | |
| Protection rating | IP20 | |
| Short circuit withstand (ISCCR) | 25 kA | |
| Voltage protection level (Up) | ≤ 2 kV | |
| Standards | EN/IEC 61643-11, UL 1449 | |
| Replacement cartridge | SP2-40K440V | |
| HS Code | 85363090 | |
| Country of Manufacture | Spain |
Frequently Asked Questions
What is the Mersen 83020111 used for?
It is used to protect low voltage electrical systems from transient overvoltages caused by switching operations, grid disturbances and indirect lightning effects.
What type of surge protection device is it?
The Mersen 83020111 is a Type 2 / Class II surge protection device with a pluggable module and remote indication.
What voltage is this SPD designed for?
It is designed for 400 V AC single phase L-N systems with a 440 V AC maximum continuous operating voltage.
Does this model include remote indication?
Yes. The integrated remote indication contact allows the status of the surge protection device to be monitored remotely.
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.
