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PEN Fault Detection Devices & PME Protection Units

Shop PEN fault detection devices and PME protection units for EV charging installations, including standalone devices, integrated consumer units, load-balancing and three-phase options.

Open-PEN protection selection depends on the earthing arrangement, supply configuration, charging equipment and the protection already incorporated within the EVSE. Confirm the complete design before choosing a standalone unit or combined board.

Quick guide: A suitable open-PEN protection arrangement can provide automatic disconnection under defined fault conditions. The correct method and device differ between single-phase and three-phase installations.

  • Standalone PEN devices: separate protection for a defined EV supply
  • PME consumer units: combined board and PEN protection arrangements
  • Load-balancing options: selected units for managed EV demand
  • Three-phase devices: products designed for compatible three-phase installations
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Choosing PEN Fault Protection for EV Charging

Start with the charger specification and supply arrangement. Some EVSE includes open-PEN protection; other installations need an external device or combined consumer unit. Single-phase voltage-monitoring devices and three-phase solutions are not interchangeable.

Standalone Detection Devices

Used where a separate open-PEN protection device is appropriate for the designed circuit. Check switching, supply configuration, enclosure and charger compatibility.

Read the device guide →

Integrated PME Consumer Units

Combine open-PEN protection with circuit protection and, on selected products, SPD or load-management components inside one enclosure.

Browse EV consumer units →

Three-Phase & Multi-Charger

Three-phase installations require a protection method designed for that supply configuration. Confirm suitability for the number and phase arrangement of charging points.

Browse three-phase protection →

Specification Checklist

  • Earthing arrangement: establish how the charging point is supplied.
  • EVSE protection: confirm what is built into the charger and the relevant product standards.
  • Supply configuration: distinguish single-phase from three-phase protection methods.
  • Switching: verify which conductors the selected arrangement disconnects.
  • Additional devices: coordinate RCD, RCBO, SPD and load management with the complete design.

Supporting Guides

Related Categories

EV Consumer UnitsEV RCBOsType B RCDsSurge ProtectionThree Phase

Design responsibility: open-PEN protection must be selected as part of the complete EV charging installation. Check the current charger, device and installation documentation before ordering.