The X0276 Live Line Indicator (LLI) and Loss of vacuum detector module is a non-contact, 3-phase, voltage sensing unit used in sensing the presence of voltage on a phase. The presence or absence of voltage is indicated via the front LED’s and the operation of voltage free aux contact.

The relay has specifically been designed to assist in the detection of faults with medium voltage switchgear, such as aLoss of Vacuum. The non-contact capability makes this added protection an simple and easy economical addition.