Rezap Faultmaster

LV multi-shot auto-recloser

Protects the LV network during intermittent LV cable faults and safely restores customer supplies fast while assisting fault location.


Intermittent faults can be a major challenge for customers, often requiring an hour or more for operators to restore supply.

Rezap Faultmaster is a multi-shot circuit breaker and auto-recloser that rapidly reconnects customers after intermittent LV cable faults, minimising interruptions while keeping staff safe.

The smart device interrupts supply in the event of an over-current event, automatically re-energising the circuit after a short delay. Intelligent electronics and programmable delay characteristics allow intermittent faults to be cleared and restore supplies, or conditioned to accelerate collection of fault data to allow subsequent repair.

Rezap Faultmaster also collects power quality and fault information to enable single-ended fault location.

Rezap Faultmaster


Circuit break icon

Rapid reconnection during faults

Minimizes impact of intermittent faults on supply continuity to reduce customer inconvenience and CI/CMLs.

Location icon

Assists fault location

The device provides power quality and load profiling information that can support single-ended fault location.


Enhanced staff safety

Allows the Operator to safely re-energize the circuit via a low-power radio link up to a distance of 30 meters.

Efficient operations

Auto or manual reclosing

Can be configured in two operational modes, to perform reclosing either automatically or under manual control.


  • High current rating up to 400 A (630 A model also available)
  • Wireless remote operation for greater operator safety
  • Combined fault location and load profiling enables single ended fault location (SELF)
  • Web based management interface with message forwarding via SMS and email
  • ‘Fault thumping mode’ enables a 20% increase in energy to either pass permanent faults or create enough noise at the location of the fault for it to be heard and above ground
  • Light and easy to carry, ideal for single-person operation
Rezap Faultmaster outside

Find out more about Rezap Faultmaster

Get in touch if you would like to find out more about Rezap Faultmaster and how it can help keep customers on supply, condition intermittent LV faults and support fault location.

Simply complete this enquiry form.