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K2-1P275 Mersen Surge Protector Type 2 SPD 1 Pole 230 Volt 20KA L-N

K2-1P275 Mersen Surge Protector Type 2 SPD 1 Pole 230 Volt 20KA L-N

Mersen K2-1P275 Type 2 surge protection device with 275 V AC operating voltage, 50 kA maximum discharge current and pluggable DIN rail mounting for 230 V single-phase electrical systems.

SKU: 44020102Alt SKU: K2-1P275MPN: 44020102
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List Price £35.69 ex VAT
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Manufacturer Lead Time

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Why Choose the Mersen 44020102 K2-1P275 Surge Protection Device?

The Mersen 44020102 K2-1P275 is a high-performance Type 2 Surge Protection Device (SPD) designed to protect single-phase low-voltage electrical installations against transient overvoltages caused by switching events and indirect lightning strikes. Part of the proven Mersen Surge-Trap® K - K2 Series, this pluggable SPD provides reliable second-stage surge protection for residential, commercial and industrial electrical systems.

Designed for installation within distribution boards, the K2-1P275 features a compact DIN rail mounted housing with replaceable pluggable protection cartridges. This modular design enables fast maintenance while helping minimise system downtime and ensuring continuous protection of connected electrical equipment.

With a 275 V AC maximum continuous operating voltage (Uc), a 50 kA maximum discharge current (Imax) and a 20 kA nominal discharge current (In), the K2-1P275 delivers dependable protection for 230 V single-phase L-N electrical systems.

Key Advantages

  • Reliable Type 2 surge protection for single-phase electrical installations.
  • Suitable for 230 V AC L-N networks.
  • High 50 kA maximum discharge current (Imax).
  • Pluggable cartridge design for quick servicing and replacement.
  • Compact DIN rail mounted construction saves panel space.
  • Protects sensitive electrical equipment from transient overvoltages.

Key Features

  • Mersen Surge-Trap® K - K2 Series.
  • IEC Class II / Type 2 surge protection device.
  • 275 V AC maximum continuous operating voltage (Uc).
  • 50 kA maximum discharge current (Imax).
  • 20 kA nominal discharge current (In).
  • Single-pole (1P) L-N protection.
  • Visual status indicator: Green (OK) / Not Green (Replace).
  • Pluggable modular cartridge.
  • DIN rail mounted.

Reliable Protection Against Transient Overvoltages

The Mersen K2-1P275 safely diverts damaging transient surge currents away from connected electrical equipment before they can damage control systems, consumer units, automation equipment, electronic devices and other sensitive components. Installing a dedicated Type 2 SPD helps extend equipment life while reducing maintenance costs and unplanned downtime.

Its compact footprint, high discharge capacity and pluggable construction make it an ideal choice for residential, commercial and industrial distribution boards requiring dependable secondary surge protection.

Typical Applications

  • Single-phase distribution boards.
  • Residential consumer units.
  • Commercial electrical installations.
  • Industrial control panels.
  • Building management systems.
  • Automation equipment.
  • Sensitive electronic equipment.
  • 230 V AC L-N power distribution systems.

Technical Specifications

SPD Type Type 2
Voltage 230 V
Phase Single Phase
Manufacturer Mersen
Series Surge-Trap® K - K2 Series
Model K2-1P275
Part Number 44020102
EAN 8435297889724
Product type Type 2 Surge Protection Device (SPD)
IEC SPD Type Class II
UL SPD Type Type 1 Component Assembly
Maximum continuous operating voltage (Uc) 275 V AC
Nominal operating voltage (Un) 230 V AC
Maximum discharge current (Imax) 50 kA (8/20 μs)
Nominal Discharge Current (In) 20 kA (8/20 μs)
Protection level (Up) ≤1.5 kV
Configuration TN-S, TN-C, TT
Mounting type DIN rail
Format Pluggable
Maximum back-up fuse 315 A gG
Protection rating IP20
Operating temperature -40°C to +80°C
Housing material PA6 CT1 & PA66 CT1
Tightening torque 3 Nm
Dimensions (H × W × D) Approx. 90 × 18 × 90 mm
RoHS compliant Yes
HS Code 85363090
Country of Manufacture Spain
Device Type Surge protection device
Earthing System TN-C, TN-S, TT
Nominal Discharge Current (In) 20 kA
Remote Signal No

Frequently Asked Questions

What is the Mersen 44020102 K2-1P275 used for?

It provides Type 2 surge protection for single-phase electrical installations against transient overvoltages caused by switching events and indirect lightning activity.

Which electrical systems is this SPD suitable for?

The K2-1P275 is designed for 230 V AC single-phase L-N electrical systems.

What discharge current ratings does the device provide?

The device offers a 50 kA maximum discharge current (Imax) and a 20 kA nominal discharge current (In).

Does this model include remote signalling?

No. The K2-1P275 includes a visual status indicator only. For remote signalling, choose the K2-1P275-M version.

How is the K2-1P275 installed?

The surge protection device mounts directly onto a standard DIN rail and features a pluggable cartridge for fast replacement during maintenance.

Trusted Protection for Modern Electrical Installations

Mersen Surge-Trap® K Series surge protection devices are trusted by electricians, panel builders and electrical engineers worldwide to protect low-voltage electrical installations from damaging transient overvoltages.

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