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Mersen Surge Protector Type 2+3 SPD 2 Pole 120 Volt 10KA TT

Mersen Surge Protector Type 2+3 SPD 2 Pole 120 Volt 10KA TT

Mersen 83230108 STPT23-20K150V-2PG Type 2+3 surge protection device for 120/208 V AC TT systems with 20 kA maximum discharge current and pluggable 2-pole design.

SKU: 83230108Alt SKU: STPT23-20K150V-2PGMPN: 83230108
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List Price £63.15 ex VAT
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Why Choose the Mersen 83230108 Surge Protection Device?

The Mersen 83230108 is a high-performance Type 2+3 surge protection device (SPD) designed to safeguard low-voltage electrical installations against transient overvoltages caused by lightning strikes and switching events. Part of the trusted Mersen Surge-Trap® Pluggable STPT23 Series, it provides coordinated surge protection for 120/208 V AC TT single-phase systems.

Featuring a compact 2-pole pluggable configuration, the device combines line-to-neutral (L-N) and neutral-to-earth (N-PE) protection within a single assembly. Its modular design enables rapid cartridge replacement, reducing maintenance time while ensuring dependable protection for sensitive industrial and commercial equipment.

With a 20 kA maximum discharge current (Imax), 10 kA nominal discharge current (In) and 150 V AC maximum continuous operating voltage (Uc), the Mersen 83230108 is ideal for protecting PLCs, control panels, instrumentation, power supplies and automation systems installed on 120/208 V TT electrical networks.

Key Advantages

  • High-performance Type 2+3 surge protection device.
  • 20 kA maximum discharge current for dependable surge protection.
  • Combined L-N and N-PE protection in a single unit.
  • 2-pole pluggable design for fast maintenance.
  • Designed for 120/208 V AC TT systems.
  • Suitable for industrial, commercial and OEM electrical installations.

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).
  • 150 V AC maximum continuous operating voltage (Uc).
  • 120 V AC nominal operating voltage.
  • 2-pole TT (1Ph+N) configuration.
  • DIN rail mounted pluggable construction.

Reliable Protection for Low-Voltage Power Systems

Surge protection devices help prevent transient overvoltages from damaging sensitive electrical equipment by safely diverting surge energy to earth before it reaches connected loads. Installing an SPD improves equipment reliability, reduces maintenance costs and minimises unexpected downtime.

The Mersen Surge-Trap® STPT23 Series is designed for final-stage surge protection close to sensitive equipment, providing excellent protection for industrial automation, control systems and commercial electrical installations.

Typical Applications

  • Industrial control panels.
  • Commercial electrical distribution boards.
  • PLC and automation systems.
  • Instrumentation and control equipment.
  • Power supplies and communication equipment.
  • OEM machinery and panel building applications.

Technical Specifications

Voltage 120 V
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23
Model STPT23-20K150V-2PG
SKU 83230108
Product type Type 2+3 Surge Protection Device
SPD classification IEC Type 2+3 / Class II + III
Nominal operating voltage (Un) 120 V AC
System voltage 120/208 V AC TT
Maximum continuous operating voltage (Uc) 150 V AC
Maximum discharge current (Imax) 20 kA (8/20 μs)
Nominal discharge current (In) 10 kA (8/20 μs)
Combined voltage pulse (Uoc) 10 kV
Configuration TT (1Ph+N)
Number of poles 2
Mounting type DIN rail
Protection rating IP20
HS Code 85363090
Country of Manufacture Spain
Poles 2-pole
Device Type Surge protection device
SPD Type Type 2+3
Nominal Discharge Current (In) 10 kA
Earthing System TT

Frequently Asked Questions

What is the Mersen 83230108 used for?

It protects 120/208 V AC TT electrical systems against damaging transient overvoltages caused by lightning and switching events.

What type of surge protection device is this?

The 83230108 is a Type 2+3 / Class II + III surge protection device with combined L-N and N-PE protection.

What electrical system is it designed for?

It is designed for 120/208 V AC TT single-phase systems with a maximum continuous operating voltage of 150 V AC.

Is the module replaceable?

Yes. The pluggable design allows the protection cartridges to be replaced quickly, reducing maintenance time.

Where is this SPD typically installed?

It is installed on DIN rails inside industrial control panels, switchboards and commercial electrical distribution equipment.

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 systems.

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