Danfoss 7773118 C-Heater Belt 75W 400V Crankcase Heater

Description

Danfoss C-Heater Belt — 75W, 400V Crankcase Heater

The Danfoss 7773118 C-Heater Belt is a purpose-built crankcase heater designed to prevent refrigerant migration into compressor oil during off-cycle periods. By maintaining a controlled temperature around the compressor crankcase, this heater belt helps extend compressor life, reduce startup wear, and protect system efficiency — especially in low-ambient or cold-weather installations.

Key Features

• Rated power: 75W
• Rated voltage: 400V
• Flexible belt design for secure wraparound fit on compressor crankcase
• Prevents refrigerant migration and oil dilution during compressor off cycles
• Helps reduce liquid slugging and compressor damage at startup
• Genuine Danfoss OEM quality for reliable, long-term performance
• Suitable for use in commercial refrigeration and HVAC applications

Why Use a Crankcase Heater?

During extended off cycles — particularly in cold ambient conditions — refrigerant can migrate into the compressor oil sump, diluting the lubricant and causing liquid slugging at startup. The Danfoss 7773118 C-Heater Belt keeps the crankcase warm enough to drive off refrigerant, safeguarding compressor bearings and extending overall system life.

Application

• Commercial refrigeration compressors
• HVAC condensing units
• Systems operating in low-ambient or variable-temperature environments
• Replacement or upgrade installations requiring a 75W, 400V belt-style crankcase heater