Carrier 50HJ680050 Economizer Controller 321702-401 Direct Replacement: Replaces common industry

Direct Replacement: Replaces common industry models including 59835 and 41C83 without requiring mounting bracket modifications

the NEMA 4 rated die-cast aluminum enclosure ensures the electronics remain protected from moisture and industrial debris

Direct-Acting Reliability: The direct-acting design allows for operation even at zero pressure differential

this switch is factory-sealed and non-adjustable

While normal HVAC operation typically utilizes 0-20 psig

Carrier 50HJ680050 Economizer Controller 321702-401 Direct Replacement: Replaces common industryThe Carrier 50HJ680050 Economizer Controller is a critical OEM replacement component designed for vertical mount configurations in high tonnage commercial rooftop units (RTU). As a primary logic module, this device automates free cooling by precisely modulating damper actuators based on real time mixed air and enthalpy sensor data. By prioritizing outdoor air intake when ambient conditions are favorable, the 50HJ680050 significantly reduces the load