MARS 43307 Pressure Switch
Finding a reliable replacement for high-pressure cut-out applications requires components that withstand rigorous cycling. The MARS 43307 Pressure Switch is a heavy-duty, capsule-type control engineered for HVACR system protection and compressor safety. This specific high pressure switch features an SPST open on fall configuration, calibrated for 400 PSI cut-in and 300 PSI cut-out. Rated for R-410A compatibility and other high-pressure refrigerants, it utilizes a 1/4-inch SAE female flare fitting with an internal Schrader valve depressor for a direct, leak-free connection. The hermetically sealed design prevents moisture ingress and vibration-induced failure, making it an essential HVAC replacement part for maintaining system integrity during extreme pressure fluctuations.
Key Technical Benefits
- Precise Pressure Calibration: Fixed 400 PSI CI / 300 PSI CO settings ensure accurate head pressure management.
- Direct Mount Reliability: Equipped with a 1/4" female flare nut for fast installation on standard service ports.
- Robust Electrical Rating: Designed to handle high-amperage pilot duty circuits without premature contact pitting.
- Environmental Durability: Sealed construction protects internal components from oxidation and contaminants.
Common Installation Questions
Does this switch require a specific mounting orientation?
No, the capsule design allows for multidirectional mounting, though it is best practice to install it vertically to minimize debris accumulation at the sensing element.
Is this switch compatible with R-22 systems?
While the physical connection is standard, the 400/300 PSI setpoints are specifically optimized for the higher operating pressures of R-410A systems. Always verify your system's design pressure limits before installation.
How do I verify if the switch has tripped?
Use a multimeter to check for continuity across the leads; in a normal state above 400 PSI, the circuit should be closed. If pressure drops below 300 PSI, the SPST contacts will open, breaking the control circuit.
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 43307 Pressure Switch
Finding a reliable replacement for high-pressure cut-out applications requires components that withstand rigorous cycling. The MARS 43307 Pressure Switch is a heavy-duty, capsule-type control engineered for HVACR system protection and compressor safety. This specific high pressure switch features an SPST open on fall configuration, calibrated for 400 PSI cut-in and 300 PSI cut-out. Rated for R-410A compatibility and other high-pressure refrigerants, it utilizes a 1/4-inch SAE female flare fitting with an internal Schrader valve depressor for a direct, leak-free connection. The hermetically sealed design prevents moisture ingress and vibration-induced failure, making it an essential HVAC replacement part for maintaining system integrity during extreme pressure fluctuations.
Key Technical Benefits
- Precise Pressure Calibration: Fixed 400 PSI CI / 300 PSI CO settings ensure accurate head pressure management.
- Direct Mount Reliability: Equipped with a 1/4" female flare nut for fast installation on standard service ports.
- Robust Electrical Rating: Designed to handle high-amperage pilot duty circuits without premature contact pitting.
- Environmental Durability: Sealed construction protects internal components from oxidation and contaminants.
Common Installation Questions
Does this switch require a specific mounting orientation?
No, the capsule design allows for multidirectional mounting, though it is best practice to install it vertically to minimize debris accumulation at the sensing element.
Is this switch compatible with R-22 systems?
While the physical connection is standard, the 400/300 PSI setpoints are specifically optimized for the higher operating pressures of R-410A systems. Always verify your system's design pressure limits before installation.
How do I verify if the switch has tripped?
Use a multimeter to check for continuity across the leads; in a normal state above 400 PSI, the circuit should be closed. If pressure drops below 300 PSI, the SPST contacts will open, breaking the control circuit.
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
Finding a reliable replacement for high-pressure cut-out applications requires components that withstand rigorous cycling. The MARS 43307 Pressure Switch is a heavy-duty, capsule-type control engineered for HVACR system protection and compressor safety. This specific high pressure switch features an SPST open on fall configuration, calibrated for 400 PSI cut-in and 300 PSI cut-out. Rated for R-410A compatibility and other high-pressure refrigerants, it utilizes a 1/4-inch SAE female flare fitting with an internal Schrader valve depressor for a direct, leak-free connection. The hermetically sealed design prevents moisture ingress and vibration-induced failure, making it an essential HVAC replacement part for maintaining system integrity during extreme pressure fluctuations.
Key Technical Benefits
- Precise Pressure Calibration: Fixed 400 PSI CI / 300 PSI CO settings ensure accurate head pressure management.
- Direct Mount Reliability: Equipped with a 1/4" female flare nut for fast installation on standard service ports.
- Robust Electrical Rating: Designed to handle high-amperage pilot duty circuits without premature contact pitting.
- Environmental Durability: Sealed construction protects internal components from oxidation and contaminants.
Common Installation Questions
Does this switch require a specific mounting orientation?
No, the capsule design allows for multidirectional mounting, though it is best practice to install it vertically to minimize debris accumulation at the sensing element.
Is this switch compatible with R-22 systems?
While the physical connection is standard, the 400/300 PSI setpoints are specifically optimized for the higher operating pressures of R-410A systems. Always verify your system's design pressure limits before installation.
How do I verify if the switch has tripped?
Use a multimeter to check for continuity across the leads; in a normal state above 400 PSI, the circuit should be closed. If pressure drops below 300 PSI, the SPST contacts will open, breaking the control circuit.
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.
