Supco SLP2045 Low Pressure Switch 20 PSI Cut-Out 45 PSI Cut-In

The Supco SLP2045 is a low-pressure safety switch designed for HVAC and refrigeration systems. This automatic reset pressure control protects compressors and equipment by monitoring refrigerant pressure and cycling the system when pressure falls outside safe operating ranges.

Key Specifications:

• Cut-out pressure: 20 PSI (system shuts off when pressure drops to this level)
• Cut-in pressure: 45 PSI (system restarts when pressure rises to this level)
• Automatic reset functionality for hands-free operation
• Single pole, single throw (SPST) switch configuration
• Compatible with various refrigerants in commercial and residential applications
• Durable construction for reliable performance in demanding environments

This low-pressure switch is commonly used in air conditioning systems, refrigeration equipment, and heat pumps to prevent compressor damage from low refrigerant charge or system leaks. The automatic reset design allows the system to resume normal operation once proper pressure is restored, making it ideal for unattended applications.