Mars 33011 Defrost Control Thermostat Temp Code L60 60F Open 40F Close

Product Description

The MARS 33011 is a defrost control thermostat designed for use in refrigeration and HVAC systems that require precise temperature-based defrost cycling. This thermostat operates on a Temp Code L60 rating, meaning it opens at 60 degrees Fahrenheit and closes at 40 degrees Fahrenheit. That temperature differential gives the system a clear signal to start and stop the defrost cycle, preventing ice buildup on evaporator coils without running the defrost heater longer than necessary. The MARS 33011 is a go-to component for HVAC technicians and refrigeration service professionals working on commercial and residential cooling equipment. Defrost thermostats like this one are installed directly on or near the evaporator coil. When the coil temperature rises above the open setpoint during a defrost cycle, the thermostat opens and cuts power to the defrost heater, protecting the system from overheating and reducing energy waste. When temperatures drop back to the close setpoint, the thermostat resets and the system returns to normal cooling operation. This type of automatic control is essential for maintaining efficiency and preventing frost-related airflow restrictions in refrigerators, freezers, heat pumps, and air conditioning units. MARS is a well-established manufacturer of HVAC and refrigeration components, recognized in the trade for producing dependable, long-lasting parts. Technicians rely on MARS thermostats for replacement jobs and new installations alike. The 33011 is a direct replacement for systems requiring the L60 temperature code. It helps extend equipment life by ensuring defrost cycles terminate at the correct temperature. This keeps coils clean and airflow consistent, which supports system efficiency and reduces compressor strain over time. Whether you are doing a service call or a scheduled maintenance replacement, the MARS 33011 delivers reliable performance in the field.

• Opens at 60 degrees Fahrenheit and closes at 40 degrees Fahrenheit for accurate defrost cycle control
• Designed for use on evaporator coils in refrigeration and HVAC applications
• Manufactured by MARS, a trusted name in heating, cooling, and refrigeration components

Product Highlights

The MARS 33011 defrost control thermostat provides dependable temperature-based cycle termination for refrigeration and HVAC systems. Its L60 Temp Code rating makes it a reliable direct replacement for service and maintenance applications.

Product Information

Standard Information

• Brand: MARS
• Manufacturer Part Number: 33011

Technical Specifications

• Temp Code: L60
• Open Temperature: 60 degrees Fahrenheit
• Close Temperature: 40 degrees Fahrenheit
• Product Type: Defrost Control Thermostat
• Application: Refrigeration and HVAC evaporator coil defrost control