Double Pole Double Throw Relay Schematic

The 1 terminal is common which is normally close with 2 and normally open with 3.

Double pole double throw relay schematic.

Fig 1 2 dpdt terminal diagram. The 2 coil terminals is where the voltage is placed in order to energize the coil. 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. 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.

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. A double pole double throw dpdt switch is a three selection electrical device in which there is one off and two on positions. 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.

An application for this switch is for reversing a direct current dc electrical motor. Thus a double pole switch has three terminals. In the diagram a1 and a2 is coil terminals of electromagnetic relay. The polarity of the voltage does not matter.

The motor s two power leads are reversed at one of the switches screw terminals. A double pole double throw relay comes with 8 terminal points. Dpdt relay double pole double throw. A double throw switch connects an input terminal to one of two output terminals.

The following are industry accepted relay schematics and forms that gigavac uses for most of its relays. In this article we go over how to connect a double pole double throw dpdt relay in a circuit. How to connect a dpdt relay in a circuit. I shown a power relay with schematic diagram.

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. A positive and negative voltage can be placed on either end. One of the terminals is called the common terminal. In the above double pole double throw relay schematic diagram.

Thus a double pole switch has three terminals. Here pole indicates individual input circuit and throw indicates the output circuit. Place the relay s rated coil voltage on these terminals. In order to know how to connect a dpdt relay you must know what each pin terminal represents and how the relay works.