MARS 33420 Tstat
The MARS 33420 is a high-performance commercial refrigeration thermostat designed for precision temperature control in demanding environments. This SPST fan delay thermostat features a fixed 35°F open and 55°F close configuration, making it an essential component for defrost termination and evaporator fan motor control. Built with a 1-inch fully encapsulated disc, this Klixon-style switch ensures moisture-resistant operation and long-term reliability in high-humidity coils. The 3/8-inch tube mount design allows for direct attachment to suction lines or evaporator headers, providing the rapid thermal response necessary to prevent liquid slugging and maintain optimal system efficiency. Supporting 120/240V systems with a robust 13A current rating at 120V, the 33420 is a versatile HVAC replacement part used extensively in walk-in coolers and reach-in freezers by leading brands like Hussmann, Larkin, and Friedrich. With 20-inch lead wires, it offers a straightforward refrigeration thermostat wiring solution for field technicians performing system diagnostics or preventive maintenance.
Key Benefits of the MARS 33420- Optimized Defrost Cycles: The 35°F open and 55°F close settings are factory-calibrated to ensure efficient defrost termination in commercial systems.
- Universal Compatibility: Replaces defrost thermostats in equipment from Hussmann, Friedrich, Larkin, Schaefer, and other major refrigeration manufacturers.
- Durable Construction: Features a fully encapsulated disc and robust 3/8" tube mount bracket for maximum heat transfer and vibration resistance.
- Electrical Versatility: Rated for both 120V and 240V circuits with a high inductive load capacity, making it suitable for a wide range of fan motors and heaters.
When should I replace my defrost termination thermostat? If the evaporator coil is icing up or the fan fails to restart after a defrost cycle, the MARS 33420 may have failed in the open or closed position.
Can this be used as a universal refrigeration control? While it is widely compatible, always verify that the 35F open 55F close spec matches your specific system's defrost requirements.
How do I install the MARS 33420 for the best performance? For the fastest temperature response, mount the bracket securely to the 3/8-inch evaporator tube and ensure the disc has firm contact with the surface.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $63.91
-65%$63.91
$22.37MARS 33420 Tstat
The MARS 33420 is a high-performance commercial refrigeration thermostat designed for precision temperature control in demanding environments. This SPST fan delay thermostat features a fixed 35°F open and 55°F close configuration, making it an essential component for defrost termination and evaporator fan motor control. Built with a 1-inch fully encapsulated disc, this Klixon-style switch ensures moisture-resistant operation and long-term reliability in high-humidity coils. The 3/8-inch tube mount design allows for direct attachment to suction lines or evaporator headers, providing the rapid thermal response necessary to prevent liquid slugging and maintain optimal system efficiency. Supporting 120/240V systems with a robust 13A current rating at 120V, the 33420 is a versatile HVAC replacement part used extensively in walk-in coolers and reach-in freezers by leading brands like Hussmann, Larkin, and Friedrich. With 20-inch lead wires, it offers a straightforward refrigeration thermostat wiring solution for field technicians performing system diagnostics or preventive maintenance.
Key Benefits of the MARS 33420- Optimized Defrost Cycles: The 35°F open and 55°F close settings are factory-calibrated to ensure efficient defrost termination in commercial systems.
- Universal Compatibility: Replaces defrost thermostats in equipment from Hussmann, Friedrich, Larkin, Schaefer, and other major refrigeration manufacturers.
- Durable Construction: Features a fully encapsulated disc and robust 3/8" tube mount bracket for maximum heat transfer and vibration resistance.
- Electrical Versatility: Rated for both 120V and 240V circuits with a high inductive load capacity, making it suitable for a wide range of fan motors and heaters.
When should I replace my defrost termination thermostat? If the evaporator coil is icing up or the fan fails to restart after a defrost cycle, the MARS 33420 may have failed in the open or closed position.
Can this be used as a universal refrigeration control? While it is widely compatible, always verify that the 35F open 55F close spec matches your specific system's defrost requirements.
How do I install the MARS 33420 for the best performance? For the fastest temperature response, mount the bracket securely to the 3/8-inch evaporator tube and ensure the disc has firm contact with the surface.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The MARS 33420 is a high-performance commercial refrigeration thermostat designed for precision temperature control in demanding environments. This SPST fan delay thermostat features a fixed 35°F open and 55°F close configuration, making it an essential component for defrost termination and evaporator fan motor control. Built with a 1-inch fully encapsulated disc, this Klixon-style switch ensures moisture-resistant operation and long-term reliability in high-humidity coils. The 3/8-inch tube mount design allows for direct attachment to suction lines or evaporator headers, providing the rapid thermal response necessary to prevent liquid slugging and maintain optimal system efficiency. Supporting 120/240V systems with a robust 13A current rating at 120V, the 33420 is a versatile HVAC replacement part used extensively in walk-in coolers and reach-in freezers by leading brands like Hussmann, Larkin, and Friedrich. With 20-inch lead wires, it offers a straightforward refrigeration thermostat wiring solution for field technicians performing system diagnostics or preventive maintenance.
Key Benefits of the MARS 33420- Optimized Defrost Cycles: The 35°F open and 55°F close settings are factory-calibrated to ensure efficient defrost termination in commercial systems.
- Universal Compatibility: Replaces defrost thermostats in equipment from Hussmann, Friedrich, Larkin, Schaefer, and other major refrigeration manufacturers.
- Durable Construction: Features a fully encapsulated disc and robust 3/8" tube mount bracket for maximum heat transfer and vibration resistance.
- Electrical Versatility: Rated for both 120V and 240V circuits with a high inductive load capacity, making it suitable for a wide range of fan motors and heaters.
When should I replace my defrost termination thermostat? If the evaporator coil is icing up or the fan fails to restart after a defrost cycle, the MARS 33420 may have failed in the open or closed position.
Can this be used as a universal refrigeration control? While it is widely compatible, always verify that the 35F open 55F close spec matches your specific system's defrost requirements.
How do I install the MARS 33420 for the best performance? For the fastest temperature response, mount the bracket securely to the 3/8-inch evaporator tube and ensure the disc has firm contact with the surface.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
