MARS 43334 Pressure Switch
The MARS 43334 is a heavy-duty, fixed-setting high pressure cut-out switch engineered for maximum system protection in refrigeration and R410A HVAC applications. Designed with a SPST (Single Pole Single Throw) configuration, this Klixon pressure switch features an open on rise action, cutting the circuit when head pressure reaches 450 PSI and automatically resetting once it drops to 250 PSI. Built for direct mounting, the 1/4-inch female flare fitting includes a built-in deflator, simplifying installation on high-side service ports.
For technicians managing commercial refrigeration controls, the MARS 43334 offers a hermetically sealed sensor and tamper-proof construction to prevent environmental contamination and unauthorized adjustment. Rated for 6 amps at 240V, it provides a reliable safety interface for contactor coils, effectively preventing compressor damage from condenser fan failure or restricted airflow. This high pressure switch is a direct replacement part used across multiple HVAC/R brands to ensure equipment operates within safe pneumatic and hydraulic limits.
Key Benefits- Factory-Set Calibration: Fixed 450 PSI open and 250 PSI close settings eliminate the need for field adjustments and potential setup errors.
- Direct Mount Design: Lightweight construction and 1/4-inch SAE female flare allow for quick threading onto system access valves.
- Environmental Protection: Features a hermetically sealed sensor and 18-inch leads to withstand harsh ambient conditions and vibration.
- Broad Compatibility: Suitable for both 24V control circuits and line-voltage applications up to 240V, supporting diverse equipment profiles.
What causes a high pressure switch like the MARS 43334 to trip?
Tripping typically indicates a lack of heat rejection in the condenser, often caused by a failed fan motor, dirty coils, or an overcharged system. The switch opens the circuit to prevent the compressor from operating under excessive head pressure.
Is the 43334 compatible with R410A systems?
Yes, its 450 PSI trip point and 5,000 PSI burst pressure rating make it suitable for high-pressure refrigerants like R410A in typical residential and light commercial cooling applications.
Can this switch be used for low-pressure protection?
No, this is an open-on-rise high pressure cut-out. For loss-of-charge protection, you would require a low-pressure switch that opens on a pressure drop.
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: $53.86
-65%$53.86
$18.85MARS 43334 Pressure Switch
The MARS 43334 is a heavy-duty, fixed-setting high pressure cut-out switch engineered for maximum system protection in refrigeration and R410A HVAC applications. Designed with a SPST (Single Pole Single Throw) configuration, this Klixon pressure switch features an open on rise action, cutting the circuit when head pressure reaches 450 PSI and automatically resetting once it drops to 250 PSI. Built for direct mounting, the 1/4-inch female flare fitting includes a built-in deflator, simplifying installation on high-side service ports.
For technicians managing commercial refrigeration controls, the MARS 43334 offers a hermetically sealed sensor and tamper-proof construction to prevent environmental contamination and unauthorized adjustment. Rated for 6 amps at 240V, it provides a reliable safety interface for contactor coils, effectively preventing compressor damage from condenser fan failure or restricted airflow. This high pressure switch is a direct replacement part used across multiple HVAC/R brands to ensure equipment operates within safe pneumatic and hydraulic limits.
Key Benefits- Factory-Set Calibration: Fixed 450 PSI open and 250 PSI close settings eliminate the need for field adjustments and potential setup errors.
- Direct Mount Design: Lightweight construction and 1/4-inch SAE female flare allow for quick threading onto system access valves.
- Environmental Protection: Features a hermetically sealed sensor and 18-inch leads to withstand harsh ambient conditions and vibration.
- Broad Compatibility: Suitable for both 24V control circuits and line-voltage applications up to 240V, supporting diverse equipment profiles.
What causes a high pressure switch like the MARS 43334 to trip?
Tripping typically indicates a lack of heat rejection in the condenser, often caused by a failed fan motor, dirty coils, or an overcharged system. The switch opens the circuit to prevent the compressor from operating under excessive head pressure.
Is the 43334 compatible with R410A systems?
Yes, its 450 PSI trip point and 5,000 PSI burst pressure rating make it suitable for high-pressure refrigerants like R410A in typical residential and light commercial cooling applications.
Can this switch be used for low-pressure protection?
No, this is an open-on-rise high pressure cut-out. For loss-of-charge protection, you would require a low-pressure switch that opens on a pressure drop.
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.
Product Information
Product Information
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Description
The MARS 43334 is a heavy-duty, fixed-setting high pressure cut-out switch engineered for maximum system protection in refrigeration and R410A HVAC applications. Designed with a SPST (Single Pole Single Throw) configuration, this Klixon pressure switch features an open on rise action, cutting the circuit when head pressure reaches 450 PSI and automatically resetting once it drops to 250 PSI. Built for direct mounting, the 1/4-inch female flare fitting includes a built-in deflator, simplifying installation on high-side service ports.
For technicians managing commercial refrigeration controls, the MARS 43334 offers a hermetically sealed sensor and tamper-proof construction to prevent environmental contamination and unauthorized adjustment. Rated for 6 amps at 240V, it provides a reliable safety interface for contactor coils, effectively preventing compressor damage from condenser fan failure or restricted airflow. This high pressure switch is a direct replacement part used across multiple HVAC/R brands to ensure equipment operates within safe pneumatic and hydraulic limits.
Key Benefits- Factory-Set Calibration: Fixed 450 PSI open and 250 PSI close settings eliminate the need for field adjustments and potential setup errors.
- Direct Mount Design: Lightweight construction and 1/4-inch SAE female flare allow for quick threading onto system access valves.
- Environmental Protection: Features a hermetically sealed sensor and 18-inch leads to withstand harsh ambient conditions and vibration.
- Broad Compatibility: Suitable for both 24V control circuits and line-voltage applications up to 240V, supporting diverse equipment profiles.
What causes a high pressure switch like the MARS 43334 to trip?
Tripping typically indicates a lack of heat rejection in the condenser, often caused by a failed fan motor, dirty coils, or an overcharged system. The switch opens the circuit to prevent the compressor from operating under excessive head pressure.
Is the 43334 compatible with R410A systems?
Yes, its 450 PSI trip point and 5,000 PSI burst pressure rating make it suitable for high-pressure refrigerants like R410A in typical residential and light commercial cooling applications.
Can this switch be used for low-pressure protection?
No, this is an open-on-rise high pressure cut-out. For loss-of-charge protection, you would require a low-pressure switch that opens on a pressure drop.
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.
