BEAMA publishes new guidance to assist specifiers and installers in selecting appropriate circuit-breakers for supplying LED lighting circuits to avoid unintentional operation due to inrush currents.

Primarily, circuit-breakers are selected for overcurrent protection of the wiring system and fault / electric shock protection. In certain cases, to avoid unintentional operation, the peak current values of the loads have to be taken into consideration. This guide relates to selection of circuit-breakers when supplying LED lighting so as to avoid unintentional operation by inrush currents.

The circuit-breakers considered in this guide are those conforming with:
• BS EN 60898 series which are referred to as MCBs, and
• BS EN 61009 series which are referred to as RCBOs