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Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400 Volt 10KA TNS Remote Indication

Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400 Volt 10KA TNS Remote Indication

Mersen 83230137 STPT23-20K275V-4P-LFM Type 2+3 leakage current free surge protection device with 20 kA discharge capacity, 275 V AC continuous operating voltage, 4+0 TNS configuration and remote indication.

SKU: 83230137Alt SKU: STPT23-20K275V-4P-LFMMPN: 83230137
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£152.60

Why Choose the Mersen 83230137 Surge Protection Device?

The Mersen 83230137 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 LF Series, this leakage current free device provides reliable protection for three-phase plus neutral TNS systems in commercial, industrial and automation environments.

Engineered for DIN rail installation, this pluggable SPD helps protect sensitive electrical equipment from voltage spikes caused by lightning activity, switching operations and network disturbances. Its modular construction supports quick replacement, while the integrated remote indication contact enables easy monitoring of device status.

With a maximum discharge current of 20 kA (8/20 μs), a 275 V AC continuous operating voltage (Uc) and a 4+0 TNS configuration, the Mersen 83230137 is ideal for protecting switchboards, distribution boards, control panels, PLCs, drives and industrial machinery operating on 230/400 V AC electrical systems.

Key Advantages

  • High performance Type 2+3 surge protection device.
  • Leakage current free technology for enhanced electrical installation performance.
  • 20 kA maximum discharge current for dependable surge protection.
  • 4+0 TNS configuration for three-phase plus neutral systems.
  • Remote indication contact for straightforward status monitoring.
  • Pluggable modular design for fast maintenance and cartridge replacement.

Key Features

  • Mersen Surge-Trap® Pluggable STPT23 LF Series.
  • Model: STPT23-20K275V-4P-LFM.
  • Type 2+3 / Class II+III surge protection device.
  • 20 kA Imax (8/20 μs).
  • 275 V AC continuous operating voltage (Uc).
  • 230/400 V AC nominal operating voltage.
  • Four-pole, 4+0 TNS configuration.
  • Remote indication with leakage current free operation.

Reliable Protection Against Electrical Surges

Surge protection devices safely divert transient overvoltages away from connected equipment before they can cause insulation failure, electronic damage or costly downtime. Installing an SPD helps improve system resilience and extends the service life of sensitive electrical and automation equipment.

The Mersen Surge-Trap® STPT23 LF Series is designed as a final stage of protection in low voltage installations where upstream protection is already installed, making it suitable for switchboards, control panels, building services and industrial machinery systems.

Typical Applications

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

Technical Specifications

Voltage 400 V
Phase Three Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23 LF Series
Model STPT23-20K275V-4P-LFM
SKU 83230137
Product type Surge Protection Device (SPD)
SPD classification Type 2+3 / Class II+III
Maximum discharge current (Imax) 20 kA (8/20 μs)
Continuous operating voltage (Uc) 275 V AC
Nominal operating voltage (Un) 230/400 V AC
System configuration TN-S
Network type TN-S
Number of poles 4
Number of modules 4
Mounting type DIN rail
Format Pluggable modular device
Remote indication Yes
Leakage current free Yes
Standards EN/IEC 61643-11
Protection rating IP20
Dimensions (H × W × D) approx. 90 × 72 × 70 mm
EAN/UPC 8435297852377
RoHS compliant Yes
HS Code 85363090
Country of Manufacture Spain
Poles 4-pole
Device Type Surge protection device
SPD Type Type 2+3
Earthing System TN-S
Nominal Discharge Current (In) 10 kA
Remote Signal Yes

Frequently Asked Questions

What is the Mersen 83230137 used for?

It is used to protect low voltage electrical installations and connected equipment from transient overvoltages caused by lightning activity, switching events and electrical disturbances.

What type of surge protection device is the Mersen 83230137?

The Mersen 83230137 is a Type 2+3 / Class II+III surge protection device.

What electrical system is this SPD designed for?

It is designed for 230/400 V AC three-phase plus neutral TNS systems using a 4+0 configuration.

Does the Mersen 83230137 include remote indication?

Yes. The device includes remote indication, allowing the operational status of the SPD to be monitored from an electrical panel or control system.

Is the Mersen 83230137 leakage current free?

Yes. It is part of the leakage current free STPT23 LF Series, helping reduce continuous leakage current during normal operation.

Trusted by Electrical Professionals Worldwide

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

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