Call Us Today
01706 242050
Trade Portal
Mersen Surge Protector Type 2+3 SPD 1 Pole 400 Volt 10KA L-N

Mersen Surge Protector Type 2+3 SPD 1 Pole 400 Volt 10KA L-N

Mersen 83230104 STPT23-20K440V-1P Type 2+3 pluggable surge protection device with 20 kA Imax, 10 kA In and 440 V AC Uc for 400 V AC L-N electrical systems.

SKU: 83230104Alt SKU: STPT23-20K440V-1PMPN: 83230104
Price
List Price £31.20 ex VAT
Your Price (ex VAT)
£31.20
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) £31.20
Trade pricing is personalised to your account

Manufacturer Lead Time

£31.20

Why Choose the Mersen 83230104 Surge Protection Device?

The Mersen 83230104 is a compact and dependable Type 2+3 surge protection device (SPD) designed to protect low-voltage electrical installations from transient overvoltages. Part of the Mersen Surge-Trap® Pluggable STPT23 Series, it provides fine surge protection for industrial, commercial and OEM power distribution systems.

This pluggable SPD is designed for line-to-neutral (L-N) protection in AC installations. Its modular construction allows fast replacement of the surge protection cartridge, helping simplify maintenance while reducing downtime in control panels and electrical distribution boards.

With a 20 kA maximum discharge current, 10 kA nominal discharge current and 440 V AC maximum continuous operating voltage, the Mersen 83230104 is suitable for protecting equipment connected to 400 V AC systems, including automation equipment, drives, PLCs, power supplies and instrumentation.

Key Advantages

  • Compact Type 2+3 surge protection device for low-voltage installations.
  • 20 kA Imax discharge capacity for reliable transient overvoltage protection.
  • 440 V AC maximum continuous operating voltage for higher voltage systems.
  • Pluggable 1-module format supports quick replacement and maintenance.
  • Designed for 400 V AC line-to-neutral applications.
  • Ideal for control panels, distribution boards and OEM electrical equipment.

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).
  • 440 V AC maximum continuous operating voltage.
  • 1-pole L-N configuration.
  • Pluggable 1-module design.
  • DIN rail mounting for panel installation.

Reliable Protection Against Voltage Surges

Surge protection devices help prevent damaging transient voltages from reaching sensitive equipment. By diverting surge energy away from connected loads, SPDs reduce the risk of failure, data loss, nuisance faults and unplanned downtime.

The Mersen 83230104 is designed for panel-mounted electrical protection where reliable surge suppression is required close to the equipment being protected. Its pluggable design makes it suitable for maintenance-friendly installations in industrial and commercial environments.

Typical Applications

  • Industrial control panels.
  • Commercial electrical distribution boards.
  • PLC and automation systems.
  • Variable speed drives and motor control equipment.
  • Power supplies and instrumentation circuits.
  • OEM machinery and panel building applications.

Technical Specifications

Voltage 400 V
Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® Pluggable STPT23 Series
Model STPT23-20K440V-1P
SKU 83230104
Product type Surge Protection Device
SPD classification Type 2+3 / Class II + III
Nominal operating voltage 400 V AC
Maximum continuous operating voltage 440 V AC
Connection mode L-N
Number of poles 1 pole
Format Pluggable, 1 module
Maximum discharge current (Imax) 20 kA (8/20 μs)
Nominal discharge current (In) 10 kA (8/20 μs)
Combined discharge voltage 10 kV
Mounting type DIN rail
Barcode 8435297850557
Poles 1-pole
Device Type Surge protection device
SPD Type Type 2+3
Nominal Discharge Current (In) 10 kA

Frequently Asked Questions

What is the Mersen 83230104 used for?

The Mersen 83230104 is used to protect low-voltage electrical installations and sensitive equipment from transient overvoltages.

What type of SPD is the 83230104?

It is a Type 2+3 / Class II + III surge protection device from the Mersen Surge-Trap® Pluggable STPT23 Series.

What voltage rating does this SPD support?

It is designed for 400 V AC systems with a 440 V AC maximum continuous operating voltage.

Is the Mersen 83230104 pluggable?

Yes. The pluggable cartridge design allows fast replacement, helping simplify maintenance in electrical panels and distribution boards.

Where is this surge protection device installed?

It is designed for DIN rail installation inside electrical panels, switchboards, control cabinets and OEM machinery enclosures.

Trusted by Electrical Professionals Worldwide

Mersen Surge-Trap® surge protection devices are widely used by electrical engineers, panel builders and maintenance professionals to protect power distribution and automation equipment 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...