Call Us Today
01706 242050
Trade Portal
Mersen Surge Protector Type 2+3 SPD 4 Pole 230/400 Volt 10KA TNS

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

Mersen 83230136 STPT23-20K275V-4P-LF Type 2+3 leakage current free surge protection device with 20 kA discharge capacity, 275 V AC continuous operating voltage and 4+0 TNS configuration.

SKU: 83230136Alt SKU: STPT23-20K275V-4P-LFMPN: 83230136
Price
List Price £130.42 ex VAT
Your Price (ex VAT)
£130.42
Manufacturer Lead Time Please contact us for a delivery time before you order
Get the best trade prices Trade exclusive

Create a trade account to unlock exclusive pricing, special offers and more.

Sign up for a trade account Quick & easy setup
SUBTOTAL (EX VAT) £130.42
Trade pricing is personalised to your account

Manufacturer Lead Time

£130.42

Why Choose the Mersen 83230136 Surge Protection Device?

The Mersen 83230136 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 dependable protection for three-phase plus neutral electrical systems in commercial, industrial and automation environments.

Engineered for DIN rail installation, this pluggable SPD helps safeguard sensitive electrical equipment from voltage spikes caused by lightning activity, switching operations and network disturbances. Its compact modular format allows fast cartridge replacement, supporting straightforward maintenance and reduced downtime.

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 83230136 is ideal for protecting distribution boards, switchboards, PLC systems, drives and industrial control equipment operating on 230/400 V AC electrical systems.

Key Advantages

  • High performance Type 2+3 surge protection device.
  • Leakage current free technology for enhanced installation performance.
  • 20 kA maximum discharge current for reliable transient overvoltage protection.
  • 4+0 TNS four-pole configuration for three-phase plus neutral installations.
  • Pluggable modular design for fast maintenance and replacement.
  • Helps protect sensitive automation, control and electrical distribution equipment.

Key Features

  • Mersen Surge-Trap® Pluggable STPT23 LF Series.
  • Model: STPT23-20K275V-4P-LF.
  • Type 2+3 / Class II+III surge protection device.
  • 20 kA Imax (8/20 μs).
  • 10 kA nominal discharge current (In).
  • 275 V AC continuous operating voltage (Uc).
  • Four-pole, 4+0 TNS configuration.
  • Leakage current free pluggable cartridge format.

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 reliability while extending the operational 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 Type 2 protection is already installed, making it suitable for use close to the equipment being protected in switchboards, control panels and 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-LF
SKU 83230136
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
Combined voltage pulse (Uoc) 10 kV
Continuous operating voltage (Uc) 275 V AC
Nominal operating voltage (Un) 230/400 V AC
System configuration TN-S
Number of poles 4
Number of modules 4
Mounting type DIN rail
Format Pluggable modular device
Protection rating IP20
Short circuit withstand (ISCCR) 25 kA
Maximum back-up fuse 63 A gG
Response time 25 ns
RoHS compliant Yes
EAN/UPC 8435297852360
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 No

Frequently Asked Questions

What is the Mersen 83230136 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 83230136?

The Mersen 83230136 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.

What is the maximum discharge current?

The device provides a maximum discharge current of 20 kA (8/20 μs) with a nominal discharge current of 10 kA.

Is the Mersen 83230136 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 safeguard critical electrical infrastructure from damaging transient overvoltages.

● Service Agreements

Credit Accounts

Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.

 Priority sourcing and supply support

 Flexible payment terms for qualifying organisations

 Support for engineering, maintenance, and operations

500 +

Stock lines ready to ship

1,000 +

Same day dispatches

3500 +

Customers supported

28 

Trusted Manfacturers

● frequently asked questions

Common questions about our products and support

 

At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.

What product ranges do you supply

We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products. 

Can you help specify the correct part?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

Do you have stock for urgent orders?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What are your delivery times and costs?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

What about warranties, returns and faulty items?

Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.

● latest blog

Discover  our latest insights and
expert advice

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

From a Simple Idea to Small Business of the Year: The LED Controls Story So Far…

by | Aug 11, 2026 |

LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.

LED Controls: Danfoss Drives Authorised Partner

LED Controls: Danfoss Drives Authorised Partner

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...

LED Controls: Your Complete Control Panel Solution

LED Controls: Your Complete Control Panel Solution

by | Jan 17, 2026 |

2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...