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Mersen Surge Protector Type 2 SPD 2 Pole 48 Volt 20KA TNS Remote Indication

Mersen Surge Protector Type 2 SPD 2 Pole 48 Volt 20KA TNS Remote Indication

Mersen STPT2-40K60V-2PM Type 2 surge protection device with 40 kA maximum discharge current, 48 V AC nominal voltage, 60 V AC maximum continuous operating voltage, pluggable DIN rail construction and remote indication.

SKU: 83020129Alt SKU: STPT2-40K60V-2PMMPN: 83020129
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List Price £102.47 ex VAT
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Manufacturer Lead Time

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Why Choose the Mersen STPT2-40K60V-2PM Surge Protection Device?

The Mersen STPT2-40K60V-2PM (Part Number 83020129) is a high-performance Type 2 surge protection device (SPD) engineered to safeguard low-voltage electrical installations against transient overvoltages caused by lightning activity and electrical switching events. As part of the trusted Mersen Surge-Trap® Pluggable STPT2 Series, it delivers dependable protection for industrial, commercial and infrastructure applications.

Featuring a 40 kA maximum discharge current (Imax), pluggable modular construction and an integrated remote indication contact, this SPD allows rapid maintenance while enabling remote monitoring of device status via building management systems, PLCs or alarm circuits.

Designed for 48 V AC systems with a 2+0 TNS (1Ph+N) configuration, the STPT2-40K60V-2PM is ideal for protecting automation equipment, telecommunications systems, control panels, signalling circuits and critical low-voltage electrical installations.

Key Advantages

  • Reliable Type 2 surge protection for low-voltage electrical systems.
  • 40 kA maximum discharge current provides effective transient protection.
  • Integrated remote indication contact for external monitoring.
  • Pluggable cartridge design enables rapid maintenance.
  • Compact DIN rail mounting for electrical distribution panels.
  • Suitable for industrial, commercial and infrastructure applications.

Key Features

  • Mersen Surge-Trap® Pluggable STPT2 Series.
  • Type 2 / Class II surge protection device.
  • 40 kA Imax maximum discharge current.
  • 20 kA nominal discharge current (In).
  • 48 V AC nominal operating voltage.
  • 60 V AC maximum continuous operating voltage (Uc).
  • 1Ph+N, 2+0 TNS configuration.
  • 2-pole, 2-module pluggable construction.
  • Remote indication microswitch.
  • Visual end-of-life indication.
  • DIN rail mounting.

Reliable Protection Against Electrical Surges

Type 2 surge protection devices reduce the risk of damage caused by transient overvoltages generated by lightning strikes and switching operations. Installing an SPD helps improve system reliability, minimise equipment downtime and extend the service life of valuable electrical assets.

The Mersen Surge-Trap® STPT2 Series combines high surge capacity with replaceable pluggable cartridges, visual status indication and remote monitoring, making it an excellent solution for installations requiring efficient preventative maintenance.

Typical Applications

  • Industrial automation systems.
  • Control panels and switchboards.
  • Telecommunications equipment.
  • Building management systems.
  • Instrumentation and signalling circuits.
  • Data centres.
  • Water treatment facilities.
  • Low-voltage electrical distribution systems.

Technical Specifications

Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT2 Series - 40kA
Model STPT2-40K60V-2PM
Part Number 83020129
Product type Type 2 Surge Protection Device
IEC Classification Class II
Maximum discharge current (Imax) 40 kA (8/20 μs)
Nominal Discharge Current (In) 20 kA (8/20 μs)
Nominal operating voltage (Un) 48 V AC
Maximum continuous operating voltage (Uc) 60 V AC
Configuration TN-S
Number of poles 2
Modules 2
Mounting type DIN rail
Construction Pluggable
Remote indication Yes
Protection rating IP20
Short circuit withstand (ISCCR) 25 kA
Maximum back-up fuse 125 A gG
RoHS compliant Yes
HS Code 85363090
Country of Manufacture Spain
Poles 2-pole
Device Type Surge protection device
SPD Type Type 2
Earthing System TN-S
Nominal Discharge Current (In) 20 kA
Remote Signal Yes

Frequently Asked Questions

What is the Mersen STPT2-40K60V-2PM used for?

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

What type of surge protection device is this?

The STPT2-40K60V-2PM is a Type 2 / Class II surge protection device designed for low-voltage electrical distribution systems.

Does this model include remote indication?

Yes. It features an integrated remote indication contact that allows the operational status of the SPD to be monitored remotely.

What electrical systems is this device suitable for?

It is designed for 48 V AC systems using a 1Ph+N, 2+0 TNS configuration.

How is the device installed?

The SPD mounts directly onto a standard DIN rail and features replaceable pluggable protection modules for simplified servicing.

Trusted by Electrical Professionals Worldwide

Mersen Surge-Trap® surge protection devices are trusted by electrical engineers, panel builders and maintenance professionals to provide dependable protection for critical industrial and commercial electrical installations.

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