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K2-N Mersen Type 2 1P Neutral Replacement Cartridge

K2-N Mersen Type 2 1P Neutral Replacement Cartridge

Mersen 44020000 K2-N single-pole Type 2 neutral surge protection replacement cartridge for compatible Surge-Trap K2 assemblies, with neutral-to-earth protection and a 50 kA maximum discharge current.

SKU: 44020000Alt SKU: K2-NMPN: 44020000
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List Price £38.56 ex VAT
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Manufacturer Lead Time

£38.56

Why Choose the Mersen 44020000 K2-N Neutral Surge Protection Cartridge?

The Mersen 44020000, also known as the K2-N, is a pluggable neutral surge protection cartridge for compatible devices within the Mersen Surge-Trap® K2 Series. Designed for neutral-to-earth protection, it provides a practical replacement for a worn or end-of-life neutral module without requiring the complete surge protection assembly to be replaced.

This single-pole Type 2 cartridge is intended for the neutral protection position in compatible K2 devices using a 3+1 or 1+1 configuration. It is commonly paired with Mersen K2 line cartridges in surge protection assemblies for TT and suitable TN electrical installations.

With a maximum discharge current of 50 kA, the K2-N helps divert damaging transient surge energy from neutral to protective earth. Its pluggable construction supports quick maintenance, while the visual condition indicator allows engineers to identify when replacement is required.

Key Advantages

  • Genuine replacement neutral cartridge for compatible Mersen Surge-Trap® K2 devices.
  • Provides dedicated neutral-to-earth surge protection.
  • 50 kA maximum discharge current for effective transient overvoltage protection.
  • Single-pole, pluggable design enables fast replacement.
  • Allows maintenance without replacing the complete SPD base.
  • Visual status indication supports straightforward condition checks.
  • Suitable for compatible K2 assemblies with 3+1 and 1+1 configurations.
  • Compact modular construction for use within DIN rail-mounted SPD assemblies.

Key Features

  • Mersen Surge-Trap® K2 Series.
  • K2-N neutral replacement cartridge.
  • Type 2 surge protection technology.
  • Single-pole neutral module.
  • Neutral-to-earth protection mode.
  • 265 V AC maximum continuous operating voltage.
  • 50 kA maximum discharge current.
  • Pluggable, replaceable cartridge construction.
  • Visual operational status indication.
  • Designed for compatible Mersen K2 surge protection bases.

Efficient Maintenance of K2 Surge Protection Assemblies

Surge protection cartridges gradually absorb energy from transient overvoltages and may eventually reach the end of their service life. The Mersen K2-N cartridge allows the neutral protection module to be replaced independently while retaining the compatible DIN rail base and remaining cartridges.

This modular approach can reduce maintenance time, minimise material waste and restore the intended protection level without rewiring the complete surge protection device. The replacement cartridge should always be matched to a compatible Mersen K2 assembly and installed by a suitably qualified person.

Typical Applications

  • Replacement neutral modules for compatible Mersen K2 SPDs.
  • TT electrical distribution systems.
  • Compatible TN low-voltage installations.
  • Industrial distribution boards.
  • Commercial switchboards.
  • Automation and control panels.
  • Building services installations.
  • Maintenance of 1+1 and 3+1 surge protection assemblies.

Technical Specifications

Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® K2 Series
Model K2-N
Manufacturer part number 44020000
EAN / GTIN 8435297888772
Product type Neutral surge protection cartridge
SPD classification Type 2
Format Pluggable replacement cartridge
Number of poles 1
Protection mode Neutral to protective earth, N-PE
Maximum continuous operating voltage 265 V AC
Maximum discharge current, Imax 50 kA
Surge waveform 8/20 µs
Status indication Visual operational indicator
Remote indication contact No
Compatible mounting Mersen Surge-Trap® K2 SPD base
Housing colour Grey, RAL 7035
Housing materials PA6 CT1 and PA66 CT1
Flammability rating UL94 V-0
Operating temperature -40 to +85 °C
Operating humidity 5–95%
Maximum installation altitude 4,000 m
RoHS compliant Yes
Poles 1-pole
Device Type Replacement cartridge
SPD Type Type 2
Remote Signal No

Frequently Asked Questions

What is the Mersen 44020000 used for?

The Mersen 44020000 is a replacement neutral surge protection cartridge for compatible Mersen Surge-Trap® K2 devices. It provides neutral-to-earth protection within suitable multi-pole SPD assemblies.

Is the Mersen 44020000 a complete surge protection device?

No. The K2-N is a pluggable neutral replacement cartridge intended for installation in a compatible Mersen K2 surge protection base.

What surge current can the K2-N handle?

The cartridge has a maximum discharge current of 50 kA using an 8/20 µs surge waveform.

Which protection mode does the K2-N provide?

The K2-N provides protection between neutral and protective earth, commonly described as an N-PE protection mode.

Can the cartridge be replaced without removing the SPD base?

Yes. Its pluggable design allows the cartridge to be removed and replaced while the compatible base remains mounted and wired within the distribution board.

Does the Mersen 44020000 include remote indication?

No. The cartridge provides local visual status indication but does not include a remote signalling microswitch.

Trusted Surge Protection from Mersen

Mersen Surge-Trap® replacement cartridges support efficient maintenance and help restore dependable surge protection without requiring the complete protective assembly to be replaced.

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