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Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N

Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N

Mersen STPT2-40K440V-1P Type 2 surge protection device with 40 kA maximum discharge current, 440 V AC Uc, 400 V AC single phase configuration and pluggable DIN rail mounting.

SKU: 83020110Alt SKU: STPT2-40K440V-1PMPN: 83020110
This product has been discontinued A direct replacement is available below.
K2-1P440 Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N Replacement product K2-1P440 Mersen Surge Protector Type 2 SPD 1 Pole 400 Volt 20KA L-N SKU: 44020110 £28.91 ex VAT View

Why Choose the Mersen 83020110 Surge Protection Device?

The Mersen 83020110 is a robust Type 2 surge protection device (SPD) engineered to protect low voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning strikes. As part of the trusted Mersen Surge-Trap® Pluggable STPT2 Series, it provides reliable protection for commercial, industrial and automation applications.

Designed for 400 V AC single phase L-N systems, the STPT2-40K440V-1P delivers a 40 kA maximum discharge current (Imax) and 20 kA nominal discharge current (In), helping protect sensitive electrical equipment against damaging voltage surges. Its pluggable construction allows rapid replacement of the protection module, simplifying maintenance and reducing downtime.

With a 440 V AC maximum continuous operating voltage (Uc), compact 1 pole, 1 module DIN rail mounting design and compliance with EN/IEC 61643-11 and UL 1449, the Mersen 83020110 is an excellent choice for protecting electrical distribution systems, switchboards and industrial control panels.

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).
  • Pluggable module for fast maintenance and replacement.
  • DIN rail mounting for straightforward 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).
  • 400 V AC nominal operating voltage.
  • 440 V AC Uc.
  • Single phase L-N configuration.
  • 1 pole, 1 module pluggable design.

Reliable Protection Against Electrical Surges

Type 2 surge protection devices divert transient overvoltages away from connected electrical equipment, reducing the risk of damage, unexpected downtime and costly repairs. They provide an essential layer of protection within modern electrical distribution systems.

The Mersen Surge-Trap® STPT2 Series combines high surge handling capability with a replaceable pluggable cartridge, making it an effective solution for industrial control panels, switchboards and commercial 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 No
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT2 Series - 40 kA
Model STPT2-40K440V-1P
SKU 83020110
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
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 83020110 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 Mersen 83020110 is a Type 2 / Class II surge protection device with a pluggable module.

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.

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).

Can the protection module 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.