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New Product Solution for Contact Resistance in Aerospace Pressure Switches

Hydra-Electric is pleased to announce a new product in our line of switch solutions. Our latest switch design addresses the high failure rate of mechanical switches in the high vibration environment of engine systems.

There have long been numerous problems associated with the micro switch, a key component within every pressure switch. It vibrates in high g-force environments, giving false readings (especially on engines). When it gets opened and closed many times, it welds, which results in a false reading of an “open” position. In a normally closed operation, gauling and fretting can occur, creating high contact resistance and causing failures.

“It’s one of the top issues we hear about—a mechanical switch will fail sooner than one would like after a certain number of cycles, especially in high vibration environments,” said Bob Guziak, Vice-President of Engineering at Hydra-Electric. “Our solution adds an electronic circuit that is able to extend the life by a factor of 10 or 20.”

Our press release offers more detail. Read it here >