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A device that trips like a switch and opens the circuit when overloaded.

Circuit Breaker

A device that trips like a switch and opens the circuit when overloaded.

A circuit breaker like the ones found on a railway switchboard. Circuit breakers are used to switch the circuit of in a magnetic field on and off. The main current enters through rear post A; B is the heavy tripping coil that of wire that the main current passes through, thus operating the breaker; C contact block; the main current passes from C to D, which is a copper bridge; E is a heavy block where the current goes through after D. To set the breaker, the handle L is pulled. This causes a reaction that stops the flow of the electrical current through the system.

Circuit Breaker

A circuit breaker like the ones found on a railway switchboard. Circuit breakers are used to switch…

A typical circuit breaker that would have been used during the turn of the century. This image is an example of one that powered a trolley

Circuit Breaker

A typical circuit breaker that would have been used during the turn of the century. This image is an…

A medium capacity double pole circuit breaker (250 volt, 200 amp. General Electric Company, type C, form G).

circuit breaker

A medium capacity double pole circuit breaker (250 volt, 200 amp. General Electric Company, type C,…

A heavy current (2000 amp.) 650 volt, single pole overload circuit breaker (General Electric company, type C, form K2).

circuit breaker

A heavy current (2000 amp.) 650 volt, single pole overload circuit breaker (General Electric company,…

In the electrical distribution utility industry a cutout is a combination fuse and switch used in primary overhead feeder lines and taps to protect step down transformers from current surges and overloads.

Electric Cut Out

In the electrical distribution utility industry a cutout is a combination fuse and switch used in primary…

A diagram illustrating one type of time-limit relay. Diagrammatic drawing of a time-limit circuit breaker.

Time Limit

A diagram illustrating one type of time-limit relay. Diagrammatic drawing of a time-limit circuit breaker.