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Subjects (1-4 of 4)
Electric relays
1

-- See Also the narrower term Electric contactors


Here are entered works on devices for repeatedly establishing and interrupting an electric power circuit. Works on the conducting part of a relay, switch, circuit-breaker, connector, contactor, etc., which coacts with another conducting part to make or break a circuit are entered under Electric contacts
2

-- See Also the narrower term Electric lines Carrier transmission


3

-- See Also the narrower term Protective relays


4

-- See Also the narrower term Relay control systems


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