A circuit breaker is an automatically operated electrical switch designed to protect an electrical circuit from damage caused by excess current from an overload or short circuit its basic function is to interrupt current flow after a fault is detected.
Double pole breaker symbol.
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The voltage from either leg to the neutral line is 120 volts but across the two hot legs is 240 volts which is double the 120 volt supply.
Double pole single throw.
A dual on off switch which is often used to switch mains electricity because it can isolate both the live and neutral connections.
It connects three phases whenever there is an overload or short circuit in any phase the circuit breaker trips all three phases simultaneously.
This switch can be wired up as a.
Circuit breakers come in several styles including the standard single pole breakers that serve 120 volt household circuits and double pole breakers that take up two slots in a breaker box and serve 240 volt appliances a special kind of circuit breaker is the tandem breaker which is designed to allow two 120 volt circuits to be fit into a single slot in the circuit breaker box.
Some dpdt switches have a central off position.
Dpst double pole single throw.
These breakers can be used to serve two separate 120 volt circuits or they can serve a single 240 volt circuit such as your central ac s circuit.
This symbol represents circuit breaker with three poles.
After selecting the spdt symbol you can change the switch position up center or download by the action button.
A dual on off switch which is often used to switch mains electricity because it can isolate both the live and neutral connections.
Unlike a fuse which operates once and then must be replaced a circuit breaker can be reset either manually or automatically to resume.
Such kind of breakers is used in three phase systems in industries.
Reversing switch dpdt dpdt double pole double throw.
That means if there s a short circuit on either of the poles hot wires both trip.
Double pole breakers have two hot wires that are connected by a single neutral wire.
Double pole double throw.
This switch can be wired up as a reversing switch for a motor.
Unlike a double pole breaker which serves a single 240 volt circuit a cheater serves two 120 volt circuits.