Neutral Earth Relay

nlm3
Neutral Earth Monitor

Our nlm3, Neutral Link Monitor relay is a legacy (introduced in 2005) integrity protection product designed to continuously monitor the current limitation system on the secondary star point to earth connection of a supply transformer.

nlm5
Neutral Earth Monitor

Our nlm5 represents the latest generation of neutral-to-earth monitoring. Providing advanced continuous supervision of the Neutral Earthing Resistor (NER) circuit, monitoring resistance integrity, neutral-earth voltage rise, and leakage current. Trip thresholds and delays are independently adjustable, allowing accurate coordination with upstream protection devices. Designed for Australian mining and heavy-industrial applications, the NLM5 is compact, cost-effective and fully compliant with AS/NZS 2081:2011 and IEC 61010.