Supco SFC210275 Fan Cycling Pressure Switch HVAC Refrigeration

The Supco SFC210275 is a fan cycling low pressure switch designed for HVAC and refrigeration applications. This automatic reset switch controls condenser fan operation based on refrigerant pressure changes, making it ideal for low ambient conditions where maintaining proper head pressure is critical.

Key Features:

• Pressure range: Opens at 210 PSI on pressure fall, closes at 275 PSI on pressure rise
• SPST (Single Pole Single Throw) configuration with close on rise switching action
• 1/4" SAE 45° female flare fitting with valve core depressor for easy installation
• Snap-acting stainless steel hermetically sealed sensor for reliable performance
• 18" lead wire connection (18 AWG) for flexible mounting
• Rated voltage: 24/120/240 VAC at 50/60 Hz (6A RLA, 36A LRA)
• Automatic reset eliminates manual intervention
• Working pressure range: 0-650 PSI with 5000 PSI burst pressure rating
• Rated life: 100,000 cycles at rated load

Operating Temperatures:

• Ambient: 20°F to 176°F (-30°C to 80°C)
• Fluid: 60°F to 250°F (-50°C to 120°C)

The compact, lightweight design allows for direct mounting on refrigeration systems, air conditioners, heat pumps, and commercial refrigeration equipment. The hermetically sealed sensor provides excellent setpoint repeatability and stability for consistent performance. Compatible with various systems as a replacement for Ranco RHS-210275, Johnson P100AP-354C, and Mars 43306.