![]() It does this by removing the current from a circuit when an unsafe condition arises. These symbols are international standards established by IEC.Ī circuit breaker is a safety device to prevent damage to devices in a circuit, such as electric motors, and wiring when the current flowing through the electrical circuit supersedes its design limits. They’re known as binary devices, which essentially means it has two states, open (O) and closed (|). Relays and contactors are two other types that are commonly used in electrical controls.Ī disconnect switch performs the task of manually cutting or reconnecting power from an electrical supply by creating or closing an air insulation gap between two conduction points. ![]() It can be used to both remove the flow of the current or to initiate it. These items are often taken for granted as they work behind the scenes, and yet they are crucial for safety in homes and in industry.įor industrial purposes, both the switch and the circuit breaker need to be able to handle a higher capacity of electricity than a residential one would.īut what are the differences between a switch and a circuit breaker? A Disconnect SwitchĪn electrical switch serves the purpose of controlling the flow of electrical current to a circuit. Is it possible to use a circuit breaker as a switch interchangeably, or are they separate entities?Ĭircuit breakers and switches are not new technologies in fact, Thomas Edison first developed the idea for a circuit breaker in 1879.
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