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 104
e rupturing of the arc between contacts whenopened on heavy overload, such as 1. Magnetic blow out; 2. Thermal break; 3. Carbon break. CURRENT AND PRESSURE LIMITING DEVICES 1,623 In the magnetic blow out type, the arc is extinguished betweenauxiliary contacts confined by a chute in which the arc… … m A1 o o i SI Fig. 2,247.—Thermal overload circuit breaker. In construction two contact blocks arefixed rigidly to, but insulated from, the switch arm. They are connected electrically by twoparallel strips of suitable metal, each fitted with a steel catch piece. When the switch isclosed the strips…
Electrical engineering
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