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Mersen Surge Protector Type 2+3 SPD 3 Pole 400 Volt 10KA TNC

Mersen Surge Protector Type 2+3 SPD 3 Pole 400 Volt 10KA TNC

Mersen 83230120 STPT23-20K275V-3P-LF Type 2+3 leakage current free surge protection device with 20 kA maximum discharge current and 275 V AC maximum continuous operating voltage for 400 V AC three-phase TNC systems.

SKU: 83230120Alt SKU: STPT23-20K275V-3P-LFMPN: 83230120
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Why Choose the Mersen 83230120 Surge Protection Device?

The Mersen 83230120 is a high-performance Type 2+3 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages caused by lightning activity and electrical switching events. Part of the Mersen Surge-Trap® Pluggable STPT23 LF Series, it provides dependable protection for industrial, commercial and OEM electrical systems.

This 3-pole pluggable SPD is designed for 400 V AC three-phase TNC systems using a 3+0 configuration. It features leakage current free (LF) technology, making it suitable for installations where compatibility with Power Line Communication systems is important.

With a 20 kA maximum discharge current (Imax), 10 kA nominal discharge current (In) and a 275 V AC maximum continuous operating voltage (Uc), the Mersen 83230120 is ideal for protecting PLCs, variable speed drives, power supplies, control panels, instrumentation and sensitive automation equipment.

Key Advantages

  • High-performance Type 2+3 surge protection device for three-phase systems.
  • Leakage current free (LF) design suitable for PLC communication networks.
  • 20 kA maximum discharge current for dependable transient overvoltage protection.
  • 3-pole 3+0 TNC configuration for 400 V AC installations.
  • 275 V AC maximum continuous operating voltage.
  • Pluggable 3-module construction supports fast servicing and replacement.

Key Features

  • Mersen Surge-Trap® Pluggable STPT23 LF Series.
  • Type 2+3 / Class II + III surge protection device.
  • 20 kA maximum discharge current (Imax).
  • 10 kA nominal discharge current (In).
  • 275 V AC maximum continuous operating voltage.
  • 400 V AC nominal operating voltage.
  • Leakage current free technology.
  • DIN rail mounted pluggable construction.

Reliable Protection for Three-Phase Power Systems

Surge protection devices help prevent damaging transient overvoltages from reaching sensitive electrical equipment by safely diverting surge energy away from connected loads. This helps reduce equipment failure, nuisance faults, data loss and unplanned downtime.

The Mersen 83230120 is designed for three-phase panel-mounted surge protection where dependable performance and Power Line Communication compatibility are required. Its pluggable LF construction supports efficient maintenance and long-term reliability in demanding electrical installations.

Typical Applications

  • Industrial control panels.
  • Commercial electrical distribution boards.
  • 400 V AC three-phase TNC systems.
  • PLC and automation equipment.
  • Variable speed drives and motor control centres.
  • Power Line Communication installations.

Technical Specifications

Voltage 400 V
Phase Three Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23 LF Series
Model STPT23-20K275V-3P-LF
SKU 83230120
Product type Surge Protection Device
SPD classification Type 2+3 / Class II + III
Nominal operating voltage 400 V AC
Maximum continuous operating voltage 275 V AC
Configuration TN-C
Number of poles 3 poles
Format Pluggable, 3 modules
Maximum discharge current (Imax) 20 kA (8/20 μs)
Nominal Discharge Current (In) 10 kA (8/20 μs)
Combined voltage pulse (Uoc) 10 kV
Leakage current free Yes
Mounting type DIN rail
Protection rating IP20
HS Code 85363090
Country of Manufacture Spain
Poles 3-pole
Device Type Surge protection device
SPD Type Type 2+3
Earthing System TN-C
Nominal Discharge Current (In) 10 kA
Remote Signal No

Frequently Asked Questions

What is the Mersen 83230120 used for?

The Mersen 83230120 is used to protect three-phase low-voltage electrical systems and sensitive electronic equipment from transient overvoltages.

What type of SPD is the 83230120?

It is a Type 2+3 / Class II + III surge protection device from the Mersen Surge-Trap® Pluggable STPT23 LF Series.

What does the LF designation mean?

LF stands for Leakage Current Free, making the device suitable for installations using Power Line Communication technology.

What electrical system is this SPD designed for?

It is designed for 400 V AC three-phase TNC systems using a 3+0 configuration.

Where is this surge protection device installed?

It is designed for DIN rail installation inside electrical panels, distribution boards, switchboards and OEM machinery enclosures.

Trusted by Electrical Professionals Worldwide

Mersen Surge-Trap® surge protection devices are widely used by electrical engineers, panel builders and maintenance professionals to protect critical power distribution and automation equipment from damaging transient overvoltages.

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