Lennox 45H03 Relay R-407C The HT680050 is designed to

The HT680050 is designed to operate efficiently across both 50Hz and 60Hz frequencies

note that the Lennox 60L27 is functionally identical to the 60L2701

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

Does this sensor include a local setpoint adjustment or display

Lennox 45H03 Relay R-407C The HT680050 is designed toThe 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