Hybrid relays now available for home wiring market
A
Crouzet product story
Edited by the Engineeringtalk editorial team
Jan 22, 2001
Crouzet has succeeded in eliminating solid state relay heatsinks and ts "hybrid" relays (mechanical and solid state) can be mounted on a DIN rail and in 17.5 mm
Silent and durable, solid state relays have long won their place for industrial uses in spite their relatively bulky heat-sinks.
Crouzet has succeeded in eliminating these extensions.
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., offer a switching capacity of up to 20A, while maintaining the virtually unlimited life-span of solid state relays.
Now the last obstacle has been cleared that prevented this technology's use in the home wiring market.
In order to reduce a solid state relay's bulk, it was necessary to eliminate their integrated 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.
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