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

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.

Technical Specifications

• 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: TT, TN-S
• 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

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.

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.