Wiring diagrams of electrical apparatus and installations (1913)
McGraw-Hill · New York, McGraw-Hill Book Company · leaf 223
OverloadColl Overload^^^yfyff(^ol ^ Coil Fig. 369.—Connections of system for interlocking two circuit-breakers by means of low-voltage trips and auxiliary switches. 212 WIRING DIAGRAMS OF ELECTRICAL APPARATUS … To Field To M otorArm Fig. 370.—Connections of an overload andno-voltage release circuit-breaker.
Electric wiring
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