EDW Controls Ltd have supplied a wide range of 30 volt and 110 volt switch tripping units - with or without the batteries.

Because of the high system integrity Nickel Cadmium is often specified for the battery. This involves boost charging. If the battery is also being used to supply instrumentation and indicators it is often necessary to limit the voltage applied to these control circuits. We achieve this with diode droppers and a control card to maintain the output specification.

7312 - 3A nicad charger/ switch tripper unit.

Built for British Steel

7383 - 30v/3A switch tripper unit.

Built for Lincoln Diesels

7384 - 30v/3A switch tripper.

Built for Battery Power Systems