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Mersen Surge Protector Type 2+3 SPD 2 Pole 230/277 Volt 10KA TT

Mersen Surge Protector Type 2+3 SPD 2 Pole 230/277 Volt 10KA TT

Mersen 83230112 STPT23-20K320V-2PG Type 2+3 pluggable surge protection device with 20 kA maximum discharge current and 320 V AC maximum continuous operating voltage for 230/277 V AC single-phase TT systems.

SKU: 83230112Alt SKU: STPT23-20K320V-2PGMPN: 83230112
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List Price £62.56 ex VAT
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Manufacturer Lead Time

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Why Choose the Mersen 83230112 Surge Protection Device?

The Mersen 83230112 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 Series, it provides dependable surge protection for industrial, commercial and OEM electrical systems.

This compact 2-pole pluggable SPD is designed for 230/277 V AC single-phase TT systems using a 1+1 configuration. It provides coordinated protection between line-to-neutral (L-N) and neutral-to-earth (N-PE), helping protect connected equipment from damaging voltage spikes.

With a 20 kA maximum discharge current (Imax), 10 kA nominal discharge current (In) and a 320 V AC maximum continuous operating voltage (Uc), the Mersen 83230112 is suitable for protecting control panels, PLCs, power supplies, instrumentation, distribution boards and sensitive automation equipment.

Key Advantages

  • Compact Type 2+3 surge protection device for low-voltage installations.
  • 20 kA maximum discharge current for dependable transient overvoltage protection.
  • 2-pole 1+1 TT configuration for line, neutral and earth protection.
  • 320 V AC maximum continuous operating voltage.
  • Pluggable 2-module design supports fast replacement and maintenance.
  • Suitable for industrial panels, distribution boards and OEM electrical equipment.

Key Features

  • Mersen Surge-Trap® Pluggable STPT23 Series.
  • Type 2+3 / Class II + III surge protection device.
  • 20 kA maximum discharge current (Imax).
  • 10 kA nominal discharge current (In).
  • 320 V AC maximum continuous operating voltage.
  • 230/277 V AC nominal operating voltage.
  • L-N / N-PE protection modes.
  • DIN rail mounted pluggable construction.

Reliable Protection for Single-Phase Electrical Systems

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

The Mersen 83230112 is designed for panel-mounted surge protection in single-phase electrical installations. Its pluggable construction makes inspection and replacement straightforward, supporting efficient maintenance in industrial and commercial environments.

Typical Applications

  • Industrial control panels.
  • Commercial electrical distribution boards.
  • Single-phase TT electrical systems.
  • PLC and automation equipment.
  • Power supplies and instrumentation circuits.
  • OEM machinery and panel building applications.

Technical Specifications

Voltage 277 V
Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23 Series
Model STPT23-20K320V-2PG
SKU 83230112
Product type Surge Protection Device
SPD classification Type 2+3 / Class II + III
Nominal operating voltage 230 / 277 V AC
Maximum continuous operating voltage 320 V AC
Configuration TN-S, TT
Number of poles 2 poles
Format Pluggable, 2 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
Protection modes L-N / N-PE
Mounting type DIN rail
RoHS compliant Yes
HS Code 85363090
Country of Manufacture Spain
Poles 2-pole
Device Type Surge protection device
SPD Type Type 2+3
Earthing System TN-S, TT
Nominal Discharge Current (In) 10 kA
Remote Signal No

Frequently Asked Questions

What is the Mersen 83230112 used for?

The Mersen 83230112 is used to protect low-voltage electrical systems and sensitive electronic equipment from transient overvoltages.

What type of SPD is the 83230112?

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

What electrical system is this SPD designed for?

It is designed for 230/277 V AC single-phase TT systems using a 1+1 configuration.

What is the maximum discharge current?

The device has a 20 kA maximum discharge current (Imax) using an 8/20 μs surge waveform.

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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