Dual signal pressure switch ALCO PS2-A7A, 4353400, -0.5 to 7 bar, automatic, differential pressure 0.5 – 5 bar, 5 bar fixed, 1/4" SAE

The ALCO PS2-A7A is a high-precision dual pressure switch designed for professional use in refrigeration systems, heat pumps, and industrial air conditioning systems . With its two separate electrical signals, this switch is ideal for applications requiring both system protection and control simultaneously.

With a pressure range of -0.5 to 7 bar, the PS2-A7A reliably monitors the low-pressure range . The automatic reset mechanism restores normal operation after the pressure has normalized – without manual intervention. An adjustable differential pressure of 0.5 – 5 bar and a fixed switching pressure of 5 bar ensure consistent switching performance and stable system control.

Thanks to its 1/4" SAE flare connection, the PS2-A7A can be installed quickly and leak-free – without any soldering. The compact, robust design in proven ALCO quality guarantees a long service life and reliable performance even under demanding conditions.

Your benefits at a glance:

• Two electrical outputs – ideal for simultaneous control and protection

• Pressure range up to 7 bar – ideal for low-pressure circuits in refrigeration systems

• Automatic reset – maintenance-free operation

• Adjustable differential pressure + fixed switching pressure (5 bar)

• Standard connection 1/4" SAE flare – simple, solder-free installation

• Compact design – space-saving & easy to install

• Durable, reliable, industrial-grade

🔧 Technical data:

• Model : PS2-A7A

• Article number : 4353400

• Pressure range : -0.5 to 7.0 bar

• Differential pressure : adjustable 0.5 – 5.0 bar

• Fixed switching pressure : 5.0 bar

• Function : automatically reset

• Signal type : Dual Signal (two electrical outputs)

• Connection : 1/4" SAE flare

• Areas of application : refrigeration systems, heat pumps, industrial air conditioning systems, split air conditioning systems