1/7/2024 0 Comments Switch on off![]() Usually the number of "ON" positions that a switch has is the same as the number of throws. The throw of a switch is the number of circuit paths that can be controlled by any one pole. Therefore a normally closed circuit can also be referred to as "normally ON". momentary switch has one or more circuits that are closed when the switch actuator is at its normal or rest position. Therefore a normally open circuit can also be referred to as "normally OFF".Ī normally closed or N.C. An "open" circuit is an incomplete circuit, with "open space" between contacts. momentary switch has one or more circuits that are open when the switch actuator is at its normal or rest position. Momentary switches can be described as normally open or normally closed, which refers to the switch's original or at rest position. For example, the doorbell circuit would be represented as (ON)-NONE-OFF, where (ON) is the momentary position. ![]() A simple example of a momentary switch would be a doorbell, which automatically returns back to its resting "OFF" position when no longer actuated.Ĭarling Technologies' catalogs denote momentary circuits using parenthesis. For example, if switched to the "ON" position, the switch will remain in the "ON" position until it is physically switched to another position.Ī momentary switch is a "spring return" switch which automatically returns to its original or at rest position. A maintained switch maintains the mode or position to which it is actuated. ![]() An open circuit will not conduct electricity because either air, or some other insulator has stopped or broken the flow of current in the loop.Ĭarling offers a wide range of circuit configurations with both maintained and momentary switch functions. A closed circuit allows an uninterrupted flow of electricity from the source of power, through the conductor or wire, to the load, and then back again to the ground or source of power. A circuit is the closed loop through which electricity can flow.
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