Supco SLP0520 Low Pressure Switch 5 PSI Open 20 PSI Close HVAC Refrigeration

The Supco SLP0520 is a universal low pressure switch designed for refrigeration, air conditioning, and heat pump systems. This encapsulated, non-adjustable SPST (single pole-single throw) switch opens on pressure fall at 5 PSI and automatically closes at 20 PSI, providing reliable pressure monitoring and control for all refrigerant types including HFC, HCFC, CFC, and the new A2L refrigerants.

Key Features:

• 1/4" SAE 45° female flare fitting with valve core depressor for direct mounting
• Snap-acting stainless steel hermetically sealed sensor for durability and precision
• Automatic reset functionality for continuous operation
• 18 AWG wire leads, 18" long for flexible installation
• Rated for 24/120/240 VAC at 50/60 Hz (6 RLA, 36 LRA)
• 100,000 cycle life at rated load
• Working pressure range: 0 to 650 PSI, burst pressure: 5,000 PSI
• Ambient temperature range: -30°C to 80°C (-22°F to 176°F)
• Fluid temperature range: -50°C to 120°C (-58°F to 248°F)

This tamper-proof pressure switch offers excellent set point repeatability and stability, making it ideal for protecting HVAC and refrigeration equipment from low-pressure conditions. The compact size and lightweight design enable direct mounting without additional brackets. UL Recognized and CE certified.