Changeover contacts are double throw.
Double pole double throw door contact.
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If one switch can control one circuit for one operation it is a single pole switch.
A double pole double throw dpdt switch is a switch that has 2 inputs and 4 outputs.
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A double pole switch is what you need to control a 240 volt device because 240 volt circuits have two hot wires.
This makes the the double pole double throw switch a very versatile switch.
Throw indicates the number of contact points.
A double pole double throw dpdt switch is a switch that has 2 inputs and 4 outputs.
No and nc contacts are single throw.
Each of the terminals of a double pole double switch can either be in 1 of 2 positions.
Each of the terminals of a double pole double switch can either be in 1 of 2 positions.
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It has four terminals.
If it can control two or three circuits for one operation it is a double pole or a triple pole switch.
The difference between a single and double pole switch is that the latter controls two circuits at the same time.
The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts which are connected to external circuits each set of contacts can be in one of two states.
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This makes the the double pole double switch a very versatile switch.
Each input has 2 corresponding outputs that it can connect to.
Each input has 2 corresponding outputs that it can connect to.