Supco SHP425325 Pressure Switch
Target system over-pressurization and safeguard your compressor with the Supco SHP425325 High Pressure Switch. Designed as a professional-grade HVAC high pressure cutout, this SPST (Single Pole Single Throw) control is engineered to open on pressure rise at 425 PSI (Cut-out) and automatically reset/close when the system pressure drops to 325 PSI (Cut-in). This encapsulated, non-adjustable refrigerant pressure switch is built for the rigors of the field, featuring a stainless steel hermetically sealed sensor that ensures set point stability across 100,000 cycles. With a 1/4" SAE female flare fitting and an integrated valve core depressor, it allows for direct mounting on the liquid line or discharge side without significant refrigerant loss. Compatible with HFC, HCFC, and CFC refrigerants—including newer A2L blends—the SHP425325 is a reliable replacement for OEM controls in air conditioning, heat pump, and commercial refrigeration systems.
- Precise Pressure Calibration: Features a factory-set 425 PSI cut-out and 325 PSI cut-in for consistent condenser fan cycling and high-limit protection.
- Durable Hermetic Design: The snap-acting sensor is housed in a compact, moisture-resistant enclosure to prevent contact failure in harsh ambient environments.
- Broad Electrical Compatibility: Rated for multi-voltage 24/120/240 VAC applications, supporting up to 6 RLA and 36 LRA.
- Universal Field Replacement: Directly replaces various Mars, Johnson Controls, and Robertshaw high-pressure controls to minimize truck stock.
What is the purpose of the 425 PSI cut-out?
This switch acts as a safety limit. If the head pressure exceeds 425 PSI—often due to a failed condenser fan motor or a dirty coil—the switch opens the 24V control circuit to the contactor, shutting down the compressor to prevent mechanical damage or a burst line.
Is this an automatic or manual reset switch?
The SHP425325 is an automatic reset pressure switch. Once the head pressure cools and drops below the 325 PSI cut-in point, the SPST contacts will close, allowing the system to resume normal operation without manual intervention.
Can I use this with different refrigerants?
Yes. This control is compatible with a wide range of refrigerants, including R-22, R-410A, and newer low-GWP A2L refrigerants, making it a versatile HVACR safety control for modern and legacy systems alike.
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: $16.34
-65%$16.34
$5.72Supco SHP425325 Pressure Switch
Target system over-pressurization and safeguard your compressor with the Supco SHP425325 High Pressure Switch. Designed as a professional-grade HVAC high pressure cutout, this SPST (Single Pole Single Throw) control is engineered to open on pressure rise at 425 PSI (Cut-out) and automatically reset/close when the system pressure drops to 325 PSI (Cut-in). This encapsulated, non-adjustable refrigerant pressure switch is built for the rigors of the field, featuring a stainless steel hermetically sealed sensor that ensures set point stability across 100,000 cycles. With a 1/4" SAE female flare fitting and an integrated valve core depressor, it allows for direct mounting on the liquid line or discharge side without significant refrigerant loss. Compatible with HFC, HCFC, and CFC refrigerants—including newer A2L blends—the SHP425325 is a reliable replacement for OEM controls in air conditioning, heat pump, and commercial refrigeration systems.
- Precise Pressure Calibration: Features a factory-set 425 PSI cut-out and 325 PSI cut-in for consistent condenser fan cycling and high-limit protection.
- Durable Hermetic Design: The snap-acting sensor is housed in a compact, moisture-resistant enclosure to prevent contact failure in harsh ambient environments.
- Broad Electrical Compatibility: Rated for multi-voltage 24/120/240 VAC applications, supporting up to 6 RLA and 36 LRA.
- Universal Field Replacement: Directly replaces various Mars, Johnson Controls, and Robertshaw high-pressure controls to minimize truck stock.
What is the purpose of the 425 PSI cut-out?
This switch acts as a safety limit. If the head pressure exceeds 425 PSI—often due to a failed condenser fan motor or a dirty coil—the switch opens the 24V control circuit to the contactor, shutting down the compressor to prevent mechanical damage or a burst line.
Is this an automatic or manual reset switch?
The SHP425325 is an automatic reset pressure switch. Once the head pressure cools and drops below the 325 PSI cut-in point, the SPST contacts will close, allowing the system to resume normal operation without manual intervention.
Can I use this with different refrigerants?
Yes. This control is compatible with a wide range of refrigerants, including R-22, R-410A, and newer low-GWP A2L refrigerants, making it a versatile HVACR safety control for modern and legacy systems alike.
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
Shipping & Returns
Shipping & Returns
Description
Target system over-pressurization and safeguard your compressor with the Supco SHP425325 High Pressure Switch. Designed as a professional-grade HVAC high pressure cutout, this SPST (Single Pole Single Throw) control is engineered to open on pressure rise at 425 PSI (Cut-out) and automatically reset/close when the system pressure drops to 325 PSI (Cut-in). This encapsulated, non-adjustable refrigerant pressure switch is built for the rigors of the field, featuring a stainless steel hermetically sealed sensor that ensures set point stability across 100,000 cycles. With a 1/4" SAE female flare fitting and an integrated valve core depressor, it allows for direct mounting on the liquid line or discharge side without significant refrigerant loss. Compatible with HFC, HCFC, and CFC refrigerants—including newer A2L blends—the SHP425325 is a reliable replacement for OEM controls in air conditioning, heat pump, and commercial refrigeration systems.
- Precise Pressure Calibration: Features a factory-set 425 PSI cut-out and 325 PSI cut-in for consistent condenser fan cycling and high-limit protection.
- Durable Hermetic Design: The snap-acting sensor is housed in a compact, moisture-resistant enclosure to prevent contact failure in harsh ambient environments.
- Broad Electrical Compatibility: Rated for multi-voltage 24/120/240 VAC applications, supporting up to 6 RLA and 36 LRA.
- Universal Field Replacement: Directly replaces various Mars, Johnson Controls, and Robertshaw high-pressure controls to minimize truck stock.
What is the purpose of the 425 PSI cut-out?
This switch acts as a safety limit. If the head pressure exceeds 425 PSI—often due to a failed condenser fan motor or a dirty coil—the switch opens the 24V control circuit to the contactor, shutting down the compressor to prevent mechanical damage or a burst line.
Is this an automatic or manual reset switch?
The SHP425325 is an automatic reset pressure switch. Once the head pressure cools and drops below the 325 PSI cut-in point, the SPST contacts will close, allowing the system to resume normal operation without manual intervention.
Can I use this with different refrigerants?
Yes. This control is compatible with a wide range of refrigerants, including R-22, R-410A, and newer low-GWP A2L refrigerants, making it a versatile HVACR safety control for modern and legacy systems alike.
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.
