Mars 33435 Defrost Thermostat Open 20°F Close 5°F

The Mars 33435 is a case and coil defrost thermostat designed for commercial refrigeration applications. This automatic defrost control terminates the defrost cycle when the evaporator coil reaches the proper temperature, ensuring efficient operation and preventing excessive ice buildup.

Key Specifications:

• Cut-out (Open) Temperature: 20°F - Ends defrost cycle
• Cut-in (Close) Temperature: 5°F - Initiates defrost cycle
• Case and coil mounting design for direct temperature sensing
• Replaces OEM part number 20420L28-229-89
• Suitable for walk-in coolers, freezers, and refrigeration equipment

This defrost thermostat helps maintain optimal refrigeration performance by automatically controlling the defrost cycle based on actual coil temperature. The wide temperature differential between opening and closing points ensures reliable operation in demanding commercial environments.