I have a 90340 relay that connects to a B1141643 transformer on my

The 90 340 Relay Wiring Diagram is a type of schematic diagram which includes the information necessary to connect two electrical components together. This diagram can be used to connect any type of relay, including those designated as 90 340. Relays are typically identified by their number, which can range from 0 to 3 digits.. After continuing to being asked about switches on circuit boards and switches on a relay, I decided to replace another fan board with a 90340 relay. This tim.

This relay will have blower motor wire on N.O. contact. 120v will feed one side and the blower motor the other. Then you have the 24v coil. G wire (usually green) comes back from thermostat and attaches to one coil wire. The other coil terminal goes to transformer common side.. The throw is what moves, and the pole is the connecting part. So, a DPDT relay may have either normally open (NO) or normally closed (NC) contacts, switches, or sets of points. This particular 90-340 relay has a diagram printed near the actual terminals, which can help you quite a bit in the field. The coil is electromagnetic and has a rating.