Dual-signal pressure switch ALCO PS2-W7U, 4712436, -0.5 – 7 bar / 6 – 31 bar, automatic, differential pressure 0.5 – 5 bar, 4 bar fixed, solder connection 6 mm

The ALCO PS2-W7U is a professional, dual-switching pressure switch specifically designed for simultaneous monitoring of low- and high-pressure zones in refrigeration systems, heat pumps , and split air conditioning systems . With two separate pressure ranges—- 0.5 to 7 bar (low pressure) and 6 to 31 bar (high pressure) —this model offers maximum control and safety in a compact device.

The integrated dual signaling technology allows for simultaneous use for control and safety shutdown , making it the ideal solution for complex HVAC systems. The automatic reset mechanism and adjustable differential pressure from 0.5 to 5 bar guarantee precise switching performance and ensure smooth continuous operation.

The 6 mm solder connection ensures a stable, permanent connection in copper pipes – ideal for specialist companies that value tightness and longevity.

Product advantages at a glance:

• Two switching points in one device (LP + HP)

• Low pressure range : -0.5 to 7 bar

• High pressure range : 6 to 31 bar

• Fixed switching pressure : 4 bar for stable control

• Adjustable differential pressure : 0.5 – 5 bar

• Automatically resets for less maintenance

• Dual Signal : Two electrical outputs for control + safety

• 6 mm solder connection for secure copper connections

• Application areas : Commercial refrigeration systems, heat pumps, split air conditioning systems

🔧 Technical data:

• Model : PS2-W7U

• Article number : 4712436

• Low pressure range : -0.5 to 7 bar

• High pressure range : 6 to 31 bar

• Differential pressure : 0.5 – 5 bar (adjustable)

• Fixed switching pressure : 4 bar

• Function : Automatic reset

• Signal type : Dual (two electrical contacts)

• Connection : Solder connection 6 mm

• Typical applications : HVAC systems, commercial refrigeration, industrial cooling, heat pumps