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The Heatcraft Refrigeration 4751C Defrost Thermostat is a critical fixed-setting control designed for commercial refrigeration system maintenance and efficiency
This single-speed circulator operates at 115V with a 1/25 HP motor
Voltage Compatibility: Specifically rated for 120V furnace ignitor circuits
Do not use this part in 230V circuits
Danfoss SZ161-4VAI Compressor 323613-751 The Heatcraft Refrigeration 4751C DefrostThe Danfoss SZ161 4VAI scroll compressor is a heavy duty 460V 3 phase refrigeration compressor engineered for commercial HVAC and chiller applications using R407C and R134A refrigerants. Built on Danfoss scroll technology, this unit is designed for stable compression, reduced vibration, and high efficiency under varying load conditions in air conditioning and refrigeration systems. It is commonly used in rooftop units, split systems, and packaged HVAC
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