Remlive has recently released a low-voltage visual signalling device that provides positive isolation indication in the event of an isolating device, such as a disconnect switch or circuit breaker, being switched off or tripped on fault. The device comes with triple redundant LED illumination and provides visible indication of voltage (24 -1000 VAC) from outside the switchboard door. This is achieved by using a 30.5 mm pushbutton-style round indicator display with flashing or non-flashing LEDs for power indication.
The maximum voltage to the door is only 3.8 DVC, which creates the ability to observe the loss of three phases and verify isolation before commencing work. The device is DIN-rail mountable with reduced installation time to suit retrofit applications.