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K1-1PG Mersen Surge Protector Type 1+2 SPD 1 Pole Neutral 50KA N-PE Remote Indication

K1-1PG Mersen Surge Protector Type 1+2 SPD 1 Pole Neutral 50KA N-PE Remote Indication

Mersen K1-1PG Type 1+2 pluggable neutral-to-earth surge protection device with 50 kA lightning impulse current and 100 kA maximum discharge current.

SKU: 44120100Alt SKU: K1-1PGMPN: 44120100
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List Price £123.06 ex VAT
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Why Choose the Mersen K1-1PG Type 1+2 Neutral Surge Protection Device?

The Mersen K1-1PG, product code 44120100, is a high-performance Type 1+2 Surge Protection Device (SPD) specifically designed to provide neutral-to-earth (N-PE) surge protection within low-voltage electrical installations. Part of the trusted Mersen Surge-Trap® K1 Series, it forms the neutral protection component of coordinated Type 1+2 surge protection systems installed at the main distribution board.

The K1-1PG features a 0+1 internal configuration, a maximum continuous operating voltage (Uc) of 255 V and a pluggable cartridge design for simplified maintenance. Designed for TT and TN-S earthing systems, it provides high-capacity protection against lightning currents flowing between neutral and earth.

With an impressive 50 kA lightning impulse current (Iimp 10/350 μs), 100 kA maximum discharge current (Imax 8/20 μs), 50 kA nominal discharge current (In) and a voltage protection level (Up ≤1.5 kV), the K1-1PG delivers dependable protection for modern commercial, industrial and infrastructure electrical installations.

Key Advantages

  • Dedicated neutral-to-earth (N-PE) surge protection.
  • Combined Type 1 + Type 2 surge protection.
  • 50 kA lightning impulse current (Iimp).
  • 100 kA maximum discharge current (Imax).
  • Pluggable cartridge enables fast replacement.
  • Designed for TT and TN-S electrical systems.

Key Features

  • Manufacturer: Mersen
  • Series: Surge-Trap® K1
  • Model: K1-1PG
  • Product code: 44120100
  • SPD Type: IEC Class I + II (Type 1+2)
  • Internal configuration: 0+1
  • Protection mode: Neutral to Earth (N-PE)
  • Visual operating status indicator.

Dedicated Neutral-to-Earth Surge Protection

Neutral surge protection devices are designed to safely divert lightning currents and transient overvoltages between the neutral conductor and protective earth. They are typically installed alongside line protection modules to create a coordinated Type 1+2 surge protection system for low-voltage installations.

The Mersen K1-1PG offers exceptionally high neutral discharge capability, making it particularly suitable for TT and TN-S earthing systems where reliable neutral-to-earth surge protection is essential for safeguarding sensitive electrical equipment and maintaining system reliability.

Typical Applications

  • Main electrical distribution boards.
  • Commercial buildings.
  • Industrial facilities.
  • Photovoltaic systems.
  • Battery energy storage systems.
  • EV charging infrastructure.
  • Telecommunications installations.
  • Outdoor lighting systems.
  • Water treatment facilities.

Technical Specifications

Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® K1
Model K1-1PG
Product code 44120100
EAN 8435297884095
Product type Type 1+2 Neutral Surge Protection Device
IEC SPD classification Class I + II
UL classification Type 1 Component Assembly
Internal configuration 0+1
Protection mode N-PE
Network configuration TN-S, TT
Nominal operating voltage Neutral
Maximum continuous operating voltage (Uc) 255 V
Lightning impulse current (Iimp 10/350 μs) 50 kA
Nominal discharge current (In 8/20 μs) 50 kA
Maximum discharge current (Imax 8/20 μs) 100 kA
Voltage protection level (Up) ≤1.5 kV
Mounting 35 mm DIN rail
Module type Pluggable
Status indication Visual indicator
Flammability rating UL94 V-0
Width 18 mm
Height 90 mm
Depth 90.4 mm
Weight Approx. 0.14 kg
Applicable standard IEC 61643-11
RoHS compliant Yes
Device Type Surge protection device
SPD Type Type 1+2
Earthing System TN-S, TT
Nominal Discharge Current (In) 50 kA
Remote Signal No

Frequently Asked Questions

What is the Mersen K1-1PG used for?

It provides dedicated neutral-to-earth (N-PE) surge protection as part of a coordinated Type 1+2 surge protection system installed within the main electrical distribution board.

What does the 0+1 configuration mean?

A 0+1 configuration protects the neutral-to-earth connection and is normally used together with separate line protection modules in TT and TN-S electrical systems.

What is the lightning impulse current rating?

The K1-1PG is rated for a 50 kA (10/350 μs) lightning impulse current (Iimp), making it suitable for demanding surge protection applications.

Can the protection cartridge be replaced?

Yes. The K1-1PG features a pluggable cartridge that can be replaced without removing the DIN rail base.

Which earthing systems is this device suitable for?

The K1-1PG is designed for installation in TT and TN-S earthing systems where dedicated neutral-to-earth surge protection is required.

Trusted for Neutral Surge Protection

Mersen Surge-Trap® K1 Series surge protection devices are trusted worldwide by electrical engineers and panel builders for delivering dependable lightning protection and coordinated surge protection in commercial and industrial electrical installations.

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