Lochinvar & A.O. Smith 100208514 Relay 30067439-890 The AT33A000 is a standard

The AT33A000 is a standard floating model and typically does not include an auxiliary end switch

OEM Direct Fit: Eliminates mounting issues and wiring discrepancies common with universal multi-tap transformers

maintaining seat integrity over long operational cycles

Safe Lock-up: Positive dead-end lock-up design ensures zero leakage and pressure stability when appliances are inactive

provided the secondary voltage remains at 24V

Lochinvar & A.O. Smith 100208514 Relay 30067439-890 The AT33A000 is a standardThe Lochinvar & A. O. Smith 100208514 Relay is a critical 24V electromagnetic control designed for precise low voltage circuit switching in commercial and residential hydronic systems. As the direct replacement for RLY2903, this OEM component ensures seamless HVACR system compatibility when interfacing between thermostat controllers and high load mechanical parts. This 24VAC relay is frequently utilized in boiler control boards and water heater wiring