SHP400300 High Pressure Switch - Open 400 PSI Close 300 PSI - HVAC Refrigeration

This SHP400300 high pressure switch is engineered for HVAC and refrigeration systems using HFC, HCFC and CFC refrigerants, with precise 400 PSI open and 300 PSI close setpoints that trigger on pressure rise. As an encapsulated, non-adjustable single pole-single throw switch with direct mount design, it features a SAE 45 female flare fitting with valve core depressor and automatic reset for reliable pressure regulation. Built with a snap acting stainless steel hermetically sealed sensor, 18 AWG 18" wiring and 24/120/240 VAC @50/60 Hz rating, it operates in -31°F to 149°F (-35°C to 65°C) with 700PSI max pressure and 100,000 cycle load life—compact, lightweight, with excellent set point repeatability for consistent system performance.

• Precise Pressure Setpoints - Opens at 400 PSI, closes at 300 PSI; activates on pressure rise for accurate HVAC/refrigeration pressure control.
• Multi-Refrigerant Compatibility - Optimized for HFC, HCFC, CFC refrigerants; ideal for all standard HVAC and refrigeration systems.
• Durable Long-Lasting Build - Hermetically sealed stainless steel snap sensor + encapsulated design; 100,000 cycle rated load life for prolonged use.
• Universal Direct Mount Design - 24/120/240 VAC @50/60 Hz rating, 18 AWG 18" wire; SAE 45 female flare fitting, compact lightweight direct mount.
• Reliable Automatic Operation - Built-in automatic reset, superior set point repeatability; operates -31°F to 149°F, max pressure 700PSI.