Hawkins electrical guide. Questions, answers & illustrations; a progressive course of study for engineers, electricians, students and those desiring to acquire a working knowledge of electricity and its applications; a practical treatise (1914)
Hawkins, N. (Nehemiah), 1833- · New York, T. Audel · leaf 124
nicative Relays.—These are used for signalling ina great variety of ways for indicating the position of switchingapparatus or pre-determining the condition of electric circuits. CURRENT AND PRESSURE LIMITING DEVICES 1,643 A.C. and D.C. Relays.—As here used, the classificationrefers to the kind of… … T)» PUSHJ BUTTON CIRCUIT BREAKER Fig. 2,281.—Diagram showing three phase motors protected by triple pole overload circuitbreaker?, with two overload coils, also one overload coil and low voltage release coil. Theuse of the low voltage release allows the breaker to be tripped from a distance by…
Electrical engineering
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