Description
Danfoss 120Z5012 Belt Type Crankcase Heater Overview
The Danfoss 120Z5012 is a belt-type crankcase heater engineered to protect refrigeration and air conditioning compressors from the damaging effects of refrigerant migration and liquid slugging. By maintaining the crankcase oil at a temperature above the surrounding ambient, this heater prevents refrigerant from mixing with the compressor oil during off-cycles — helping extend compressor life and reduce costly service calls.
Key Features
- Belt-type design wraps securely around the compressor crankcase for efficient, uniform heat transfer
- Operating voltage: 460 Volts
- Wattage: 70 Watts
- Danfoss quality construction for reliable, long-term performance
- Helps prevent refrigerant migration into compressor oil during off-cycles
- Reduces risk of compressor damage from liquid slugging on startup
- Compatible with a wide range of compressor models and crankcase diameters
Why Use a Crankcase Heater?
During extended off-cycles — especially in cold ambient conditions — refrigerant can migrate into the compressor crankcase and mix with the lubricating oil. When the compressor restarts, this refrigerant-oil mixture can cause liquid slugging, bearing damage, and premature compressor failure. A properly sized crankcase heater keeps the oil warm enough to prevent refrigerant absorption, protecting your investment and ensuring reliable system operation.
Application
- Commercial and industrial refrigeration systems
- Air conditioning compressors operating on 460V power supplies
- Systems subject to low ambient temperatures or extended off-cycle periods
Specifications
- SKU: 120Z5012
- Brand: Danfoss
- Heater Type: Belt
- Voltage: 460V
- Wattage: 70W
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