Emerson conditions-White Rodgers 90-486 Enclosed Fan relay SPNO/SPNC 277V

The Emerson conditions-White Rodgers 90-486 Enclosed Fan Relay is an essential part of the HVAC systems intended to regulate the fan motors’ activity. This relay has a Single-Pole Normally Open/Closed contact arrangement has a voltage rating of 277V and is for different commercial and industrial uses. When the thermostat senses that its space requires heating or cooling, it turns on a relay that enables electrical current to get to the fan motor which in turn distributes air throughout the area. The advantages of using the relay are as follows The efficiency is increased because fans run only when required.