No heatsinks mean relays are only half the size
A
Crouzet product story
Edited by the Engineeringtalk editorial team
Jan 22, 2001
Crouzet has succeeded in reducing the volume of its solid state relays to half the volume of the market's smallest equivalents by eliminating integrated heat-sinks.
Crouzet has succeeded in reducing the volume of its solid state relays by eliminating the integrated heat-sinks.
With half the volume of the market's smallest equivalents, its "hybrid" relays (mechanical and solid state) can be mounted on a DIN rail and in 17.5 mm and offer a switching resistance load capacity of up to 20A.
Tested for as many as 5 million operations, more than 50 times the performance of a standard relay, the improvement in no way limits their virtually unlimited life-span.
In order to reduce a solid state relay's bulk, it was necessary to eliminate their heat-sinks which meant eliminating the heating due to the flow of current through powerful electronic components.
That was the secret of "hybrid" relays whose switching is activated by a microprocessor.
After the circuit is closed, the solid state relay is short-circuited by a mechanical relay.
The opposite is true when the circuit is opened.
Thus the relay accumulates little heat to be dissipated.
By the same means, long life is preserved.
"A relay's real wear factor," Crouzet engineers observe, "is the electricity and not its mechanics, which can survive as many as 10 million operations." Crouzet has patented the micro-controller that commands the mechanical-solid state, solid state-mechanical switch cycles.
The range includes two contactors, a teleruptor and a day-night contactor, all EC, and soon to be NF USE, compliant.
Competitively priced considering their advantages, they are available now.
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