Lennox 45H03 Relay R-407C Durable Construction: Machined from high-grade

Durable Construction: Machined from high-grade brass to resist corrosion and withstand high-pressure cycling

the damper blade opens to bypass air into the return duct or a designated dump zone

Does this sensor include a local setpoint adjustment or display

Versatile Compatibility: Standard 1/2" union solder connection facilitates seamless integration into existing copper boiler lines

Lennox 45H03 Relay R-407C Durable Construction: Machined from high-gradeThe Lennox 45H03 is a heavy duty DPDT (Double Pole Double Throw) relay manufactured by Deltrol Controls, specifically designed for high amperage HVACR switching applications. This 275TM series relay operates on a 24VAC coil and is engineered to manage inductive loads in commercial air handlers, condensers, and refrigeration systems. Its robust contact design ensures reliable circuit isolation and motor starting capabilities, making it a direct OEM