Single Pole Double Throw Relay Diagram. This is the circuit below. How to wire a dpdt rocker switch for reversing polarity linear actuator switch reverse.
In the above 5 pin relay diagram 1 and 2 pins for coil 3 is the common pin 4 is normally close and 5 is normally open pin. The single pole double throw spdt relay is quite useful in certain applications because of its internal configuration. In the above diagram i have shown a single pole double throw relay 5 pin relay.
The double pole single throw dpst relay is the equivalent of 2 spst switches no normally open and nc normaly closed and can be used to switch 2 different loads.
Place the relays rated coil voltage on these terminals. Were going to connect a single pole double throw relay to a circuit to light up a led. There are other contact configurations discussed below but make break and changeover relays are the most commonly used. Fig 12 dpdt terminal diagram look at picture 11 and 12 it consists of two common input terminals c e and both mechanically tied together to operate in the same way.