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Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA IT Remote Indication

Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA IT Remote Indication

Mersen 83020157 STPT2-40K440V-4PM Type 2 surge protection device with 40 kA maximum discharge current, 20 kA nominal discharge current, 440 V AC Uc, 230/400 V AC IT and 400/690 V AC TNS operation, 4+0 IT/TNS configuration, four-pole pluggable DIN rail construction and remote indication.

SKU: 83020157Alt SKU: STPT2-40K440V-4PMMPN: 83020157
This product has been discontinued A direct replacement is available below.
K2-4P440-M Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA IT Remote Indication Replacement product K2-4P440-M Mersen Surge Protector Type 2 SPD 4 Pole 230/400 Volt 20KA IT Remote Indication SKU: 44020421 £128.52 ex VAT View

Why Choose the Mersen 83020157 Surge Protection Device?

The Mersen 83020157 STPT2-40K440V-4PM is a high-performance Type 2 surge protection device (SPD) designed to protect low-voltage electrical installations against transient overvoltages caused by switching operations and indirect lightning activity. As part of the Mersen Surge-Trap® Pluggable STPT2 Series, it provides dependable protection for industrial, commercial and infrastructure power distribution systems.

This pluggable surge protection device is designed for fast installation, practical maintenance and long-term protection of sensitive electrical equipment. The remote indication feature enables the SPD status to be monitored from external systems, helping maintenance teams identify end-of-life conditions quickly.

With a 40 kA maximum discharge current, 440 V AC maximum continuous operating voltage and 4+0 IT / TNS configuration, the Mersen 83020157 is suitable for 230/400 V AC IT and 400/690 V AC TNS systems. Its four-pole, four-module DIN rail format makes it ideal for distribution boards and industrial control panels.

Key Advantages

  • Reliable Type 2 surge protection device for low-voltage electrical systems.
  • 40 kA maximum discharge current for effective transient overvoltage protection.
  • Suitable for 230/400 V AC IT and 400/690 V AC TNS networks.
  • 4+0 IT / TNS configuration for demanding industrial installations.
  • Pluggable cartridge design simplifies maintenance and replacement.
  • Remote indication supports monitored electrical distribution systems.

Key Features

  • Mersen Surge-Trap® Pluggable STPT2 Series.
  • Type 2 / Class II surge protection.
  • 40 kA Imax (8/20 μs) maximum discharge current.
  • 20 kA In (8/20 μs) nominal discharge current.
  • 440 V AC Uc maximum continuous operating voltage.
  • Supports 230/400 V AC IT and 400/690 V AC TNS systems.
  • 3Ph+N electrical system configuration.
  • 4+0 IT / TNS protection arrangement.
  • Four-pole, four-module pluggable construction.
  • Visual indication and remote signalling contact.

Reliable Surge Protection for Industrial Power Systems

Type 2 surge protection devices are installed within electrical distribution boards and control panels to limit transient overvoltages before they reach sensitive connected equipment. They help protect automation controls, power supplies, drives, monitoring equipment and industrial electrical infrastructure from damaging voltage spikes.

The Mersen STPT2-40K440V-4PM combines strong surge discharge performance with pluggable construction and remote indication, making it a dependable choice for electrical contractors, panel builders and maintenance engineers working on monitored commercial and industrial installations.

Typical Applications

  • Industrial electrical distribution boards.
  • Commercial building power systems.
  • Manufacturing and automation control panels.
  • IT and TNS electrical networks.
  • Utility and infrastructure installations.
  • Panel building and electrical protection upgrades.

Technical Specifications

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Voltage 400 V
Phase Three Phase
Poles 4-pole
Device Type Surge protection device
SPD Type Type 2
Earthing System IT, TN-S
Nominal Discharge Current (In) 20 kA
Remote Signal Yes
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT2 Series - 40kA
Model STPT2-40K440V-4PM
Part number 83020157
EAN / UPC 8435297851776
Product type Type 2 surge protection device
SPD Type Type 2 / Class II
Maximum discharge current (Imax) 40 kA
Waveform 8/20 μs
Maximum continuous operating voltage (Uc) 440 V AC
Supported systems 230/400 V AC IT, 400/690 V AC TNS
Configuration TN-S (also suitable for 230/400 V IT)
Number of poles 4
Module width 4 modules
Format Pluggable
Mounting type DIN rail
Remote indication Yes
Response time 25 ns
Back-up fuse 125 A gG
Protection rating IP20
Replacement plug L-N SP2-40K440V
Weight approx. 0.45 kg
Standards IEC 61643-11, EN 61643-11, UL 1449 4th Edition
HS Code 85363090
Country of Manufacture Spain

Frequently Asked Questions

What is the Mersen 83020157 used for?

The Mersen 83020157 is used to protect low-voltage electrical installations from transient overvoltages caused by switching operations and indirect lightning activity.

What type of surge protection device is it?

It is a Type 2 / Class II surge protection device designed for installation in electrical distribution boards and control panels.

Which electrical systems is this SPD suitable for?

The Mersen 83020157 is suitable for 230/400 V AC IT and 400/690 V AC TNS systems using a 4+0 configuration.

What is the maximum discharge current?

The device has a maximum discharge current of 40 kA with an 8/20 μs surge waveform.

Does the Mersen 83020157 include remote indication?

Yes. The STPT2-40K440V-4PM includes remote indication, allowing the SPD status to be monitored from external systems or control equipment.

Trusted for Electrical Protection Worldwide

Mersen Surge-Trap® surge protection devices are trusted by electrical contractors, panel builders and industrial engineers to help protect critical power distribution systems from damaging transient overvoltages.