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Mersen Surge Protector Type 2+3 SPD 4 Pole 120/208 Volt 10KA TT Remote Indication

Mersen Surge Protector Type 2+3 SPD 4 Pole 120/208 Volt 10KA TT Remote Indication

Mersen 83230125 STPT23-20K150V-4PGM Type 2+3 surge protection device with 20 kA discharge capacity, remote indication and 3+1 TT configuration for 120/208 V AC systems.

SKU: 83230125Alt SKU: STPT23-20K150V-4PGMMPN: 83230125
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List Price £136.89 ex VAT
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Why Choose the Mersen 83230125 Surge Protection Device?

The Mersen 83230125 is a high performance Type 2+3 Surge Protection Device (SPD) designed to protect low voltage electrical installations against transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT23 Series, this device delivers dependable protection for three-phase plus neutral electrical systems operating in commercial, industrial and automation environments.

Designed for DIN rail installation, this pluggable SPD combines excellent surge handling capability with a compact modular design for quick maintenance and replacement. The integrated remote indication contact enables continuous monitoring of the device status, helping maintenance teams minimise downtime.

With a maximum discharge current of 20 kA (8/20 μs), a 150 V AC continuous operating voltage (Uc) and a 3+1 TT configuration, the Mersen 83230125 is ideal for protecting distribution boards, machinery control panels and sensitive electrical equipment operating on 120/208 V AC systems.

Key Advantages

  • High performance Type 2+3 surge protection device.
  • 20 kA maximum discharge current for reliable protection against transient overvoltages.
  • 150 V AC continuous operating voltage for low voltage three-phase systems.
  • Remote indication contact for convenient status monitoring.
  • Pluggable modular construction for fast maintenance.
  • Helps protect sensitive automation, control and power distribution equipment.

Key Features

  • Mersen Surge-Trap® Pluggable STPT23 Series.
  • Model: STPT23-20K150V-4PGM.
  • Type 2+3 / Class II+III surge protection device.
  • 20 kA Imax (8/20 μs).
  • 10 kA nominal discharge current (In).
  • 150 V AC continuous operating voltage (Uc).
  • Four-pole, 3+1 TT configuration.
  • Remote indication with pluggable cartridges.

Reliable Protection Against Electrical Surges

Surge protection devices safely divert transient overvoltages away from connected electrical equipment before they can cause damage or unplanned downtime. Installing an SPD helps improve system reliability while extending the operational life of sensitive electronic equipment.

The Mersen Surge-Trap® STPT23 Series is designed as a final stage of protection close to critical equipment, making it suitable for industrial control panels, switchboards, automation systems and commercial electrical installations.

Typical Applications

  • Industrial control panels.
  • Electrical distribution boards.
  • Automation and machinery systems.
  • Commercial buildings.
  • PLC, drive and instrumentation protection.
  • Three-phase plus neutral TT electrical installations.

Technical Specifications

Voltage 208 V
Phase Three Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23 Series
Model STPT23-20K150V-4PGM
SKU 83230125
Product type Surge Protection Device (SPD)
SPD classification Type 2+3 / Class II+III
Maximum discharge current (Imax) 20 kA (8/20 μs)
Nominal discharge current (In) 10 kA
Continuous operating voltage (Uc) 150 V AC (L-N), 255 V (N-PE)
Nominal operating voltage (Un) 120/208 V AC
System configuration 3+1 TT
Number of poles 4
Number of modules 4
Mounting type DIN rail
Remote indication Yes
Replacement plug L-N SP23-20K150V
Replacement plug N-PE SP23-20K-N
Protection rating IP20
HS Code 85363090
Country of Manufacture Spain
Poles 4-pole
Device Type Surge protection device
SPD Type Type 2+3
Nominal Discharge Current (In) 10 kA
Earthing System TT
Remote Signal Yes

Frequently Asked Questions

What is the Mersen 83230125 used for?

It protects low voltage electrical installations and connected equipment against transient overvoltages caused by lightning and switching events.

What type of surge protection device is it?

The Mersen 83230125 is an IEC Type 2+3 (Class II+III) surge protection device.

What electrical system is this SPD designed for?

It is designed for 120/208 V AC three-phase plus neutral TT systems using a 3+1 configuration.

Does the device include remote indication?

Yes. It includes a remote indication contact that enables the device status to be monitored remotely.

Is the module replaceable?

Yes. The pluggable cartridge design allows rapid replacement during maintenance without replacing the complete base.

Trusted by Electrical Professionals Worldwide

Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and industrial maintenance teams to safeguard critical electrical infrastructure from damaging transient overvoltages.

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