ALCO PS3-A1S Dual Pressure Switch, 0.3/1.8 bar 4/26 psig, SPDT, Refrigeration/HVAC, PCN 0712792

ALCO PS3-A1S Dual Pressure Switch - Adjustable SPDT, Refrigeration/HVAC (PCN 0712792)

The ALCO PS3-A1S, identified by PCN 0712792, is an advanced and versatile dual pressure switch meticulously engineered for sophisticated control and critical safety functions within modern refrigeration and HVAC systems. This model is adept at precise monitoring and control, offering two distinct pressure settings—a primary setpoint (PS) of 27 bar/390 psig and a secondary trip point (PT) of 30 bar/435 psig—alongside an adjustable differential range of 0.3/1.8 bar (4/26 psig). This allows for highly customized cut-out and cut-in limits, providing robust protection against both dangerously low and excessively high system pressures. Equipped with a Single Pole Double Throw (SPDT) contact configuration, it delivers flexible electrical control, enabling the precise activation or deactivation of various system components, including compressors, condenser fans, or crucial alarm circuits. Its durable construction ensures unwavering performance and an extended operational lifespan across a wide ambient temperature spectrum of -40 to 70°C. Proudly manufactured in the Czech Republic, the PS3-A1S meets rigorous international quality and safety standards (CE and cURus listed, PSL(EN12263)), positioning it as an indispensable component for optimizing overall system efficiency, guaranteeing operational safety, and prolonging the service life of equipment in a diverse range of commercial and industrial applications.

Key Features:

• Part Number (PCN): 0712792
• Model Series: PS3
• Configuration: A1S (Specific internal configuration for this model)
• Type: Dual Pressure Switch (Adjustable)
• Setpoints (PS): 27 bar / 390 psig (Primary Setpoint)
• Trip Point (PT): 30 bar / 435 psig (Secondary Trip Point)
• Differential Settings: 0.3/1.8 bar (Adjustable Pressure Differential), 4/26 psig
• Contact Type: SPDT (Single Pole, Double Throw)
• Electrical Ratings: 6 FLA, 36 LRA, 120/240 VAC, 3A @ 230V AC15
• Operating Temperature (TS): -40 to 70°C
• Application: Essential for high-side and low-side pressure monitoring, control, and safeguarding in refrigeration, air conditioning, and heat pump systems.
• Function: Provides precise pressure regulation, comprehensive equipment protection, and reliable system control.
• Certifications: CE, cURus, PSL(EN12263)
• Manufacturing Origin: Made in Czech Republic

Manufacturer Information:

ALCO (An Emerson Brand) ALCO is a highly esteemed brand within Emerson's expansive Commercial & Residential Solutions division, globally recognized for its expert development and manufacturing of specialized components for refrigeration, air conditioning, and integrated HVAC-R systems. With a venerable heritage that spans several decades, ALCO has significantly distinguished itself as a leading innovator and a critically trusted supplier of superior quality flow controls, meticulously engineered mechanical and electronic expansion valves, and a comprehensive array of vital control components, including advanced pressure switches and highly precise thermostats. ALCO products are rigorously designed for exceptional precision, unwavering reliability, and optimal energy efficiency. They are critically instrumental in achieving peak system performance and ensuring paramount safety across a broad spectrum of commercial and industrial refrigeration applications, as well as residential and commercial air conditioning sectors worldwide. ALCO components are fundamental to the effective operation and extended lifespan of intricate fluid systems around the globe.