SOURCE1 s1-02553933000 Refrigerant Pressure Switch 650/450 Psig Normally Closed

Product Description

The SOURCE1 s1-02553933000 is a refrigerant pressure switch designed for use in residential and commercial HVAC refrigeration systems. This normally closed pressure switch is rated at 650/450 PSIG, meaning it opens at 650 PSIG and resets at 450 PSIG. It serves as a critical safety and control component, monitoring high-side refrigerant pressure to protect compressors and system components from dangerous overpressure conditions. When refrigerant pressure exceeds the cutout threshold, the switch interrupts the circuit, shutting down the compressor before damage can occur. Once pressure drops back to the reset point, the switch closes again and allows normal operation to resume. HVAC technicians rely on high-pressure switches like this one during system diagnostics, refrigerant charge verification, and compressor protection troubleshooting. This switch is commonly found in split systems, package units, heat pumps, and light commercial refrigeration equipment. The normally closed configuration ensures the circuit stays complete during normal operating pressures, with the switch only breaking continuity when a high-pressure fault is detected. Proper pressure switch function is essential for maintaining equipment warranty compliance, preventing compressor burnout, and ensuring system efficiency. The SOURCE1 brand is the OEM replacement parts line for York, Johnson Controls, and affiliated HVAC brands, making the s1-02553933000 a factory-spec replacement for compatible equipment. Using an OEM-matched pressure switch ensures accurate cutout and reset values that align with the original equipment design. This switch is compact, measuring 1 inch in length, 1 inch in width, and 1 inch in height, making it easy to install in tight equipment cabinets. It is a direct fit for technicians performing refrigerant circuit repairs, high-pressure fault diagnostics, or preventive maintenance on York and compatible systems.

• Normally closed refrigerant pressure switch with 650 PSIG cutout and 450 PSIG reset
• OEM-spec SOURCE1 replacement part for York and Johnson Controls compatible HVAC systems
• Compact 1 inch by 1 inch by 1 inch form factor for easy installation in tight equipment spaces

Product Highlights

The SOURCE1 s1-02553933000 delivers factory-matched high-pressure protection for refrigerant circuits, helping HVAC technicians restore safe compressor operation with a direct OEM replacement switch rated at 650/450 PSIG.

Product Information

Standard Information

• Brand: SOURCE1
• Manufacturer Part Number: s1-02553933000

Technical Specifications

• Switch Type: Pressure Switch, Normally Closed
• Cutout Pressure: 650 PSIG
• Reset Pressure: 450 PSIG
• Application: Refrigerant Circuit High-Pressure Protection
• Length: 1 inches
• Width: 1 inches
• Height: 1 inches