Double Pole Double Throw Relay Schematic

A positive and negative voltage can be placed on either end.

Double pole double throw relay schematic. In the above double pole double throw relay schematic diagram. A double pole double throw dpdt switch is a three selection electrical device in which there is one off and two on positions. Fig 1 2 dpdt terminal diagram. Dpdt relay double pole double throw.

The motor s two power leads are reversed at one of the switches screw terminals. In the diagram a1 and a2 is coil terminals of electromagnetic relay. Thus a double pole switch has three terminals. The dpdt relay double pole double throw is quite interesting and can be used in various scenarious including for changing the direction of a motor as you can see in the picture below.

Here pole indicates individual input circuit and throw indicates the output circuit. Single pole single throw normally open spst no form a single pole single throw normally closed spst nc form b single pole double throw spdt form c double pole double throw dpst no 2 form c. In this article we go over how to connect a double pole double throw dpdt relay in a circuit. I shown a power relay with schematic diagram.

A double pole double throw relay comes with 8 terminal points. Change motor direction with dpdt relay as you can see in the schematic the 12v battery or use other voltages is connected with the plus at terminal t1 and minus at terminal t2. The following are industry accepted relay schematics and forms that gigavac uses for most of its relays. Look at picture 1 1 and 1 2 it consists of two common input terminals c e and both mechanically tied together to operate in the.

This is the diagram below to learn all the pin terminals of a double pole double throw dpdt relay. Place the relay s rated coil voltage on these terminals. How to connect a dpdt relay in a circuit. Also a 8 pin glass finder types relay with also a dpdt relay with diagram.

The polarity of the voltage does not matter. It has 2 terminals and 4 connectors and you can look at the dpdt relay as the equivalent of 2 single pole double throw spdt relays. A double throw switch connects an input terminal to one of two output terminals. In order to know how to connect a dpdt relay you must know what each pin terminal represents and how the relay works.

Double pole double throw toggle has 2 input terminals and 4 output terminals. The 1 terminal is common which is normally close with 2 and normally open with 3. The 2 coil terminals is where the voltage is placed in order to energize the coil. One of the terminals is called the common terminal.