Manufacturer Name: Lennox Product Number: 10B17 OEM Part Number: 10B17 Product Description: Potential Relay Weight:0.27lbs/122.47g The Lennox 10B17 Potential Relay is an essentialpart of HVAC systems, which is used to control the start of the compressor in the air conditioning systems and heat pumps. This relay operates through the voltage. https://www.partshnc.com/potential-relay-9