2 Pole Double Throw Relay

The designations no and nc should be used to resolve the ambiguity.

2 pole double throw relay.

We re going to connect a double pole double throw relay to a circuit to light up leds. The poles may be form a or form b or one of each. Omron ly2 ac110 120 general purpose relay standard type plug in solder terminal standard bracket mounting single contact double pole double throw contacts 9 9 to 10 8 ma at 50 hz and 8 4 to 9 2 ma at 60 hz rated load current 110 to 120 vac rated load voltage 4 6 out of 5 stars 18 12 35 12 35 get it as soon as wed jul 22. Including two for the coil such a relay has a total of six terminals.

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. 36 6 18 relay get it as soon as wed sep 9. Dpst double pole single throw relays are equivalent to a pair of spst switches or relays actuated by a single coil. When the relay isn t powered both the red led and the dc fan are on.

This is the circuit below. 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.