Low pressure pressure switch ALCO PS1-A3A, 4370700, -0.5 – 7 bar, automatic, differential pressure 0.5 – 5 bar, 1/4" SAE

The ALCO PS1-A3A is a powerful low-pressure pressure switch specifically designed for the precise monitoring and control of refrigerant circuits in refrigeration systems, air conditioning units, and heat pumps . With a wide switching range of -0.5 to 7 bar, the device is ideal for the low-pressure segment , where precise control is particularly important.

The switch features an adjustable differential pressure of 0.5 to 5 bar , allowing for individual adaptation to different system requirements . The automatic reset ensures continuous, low-maintenance operation without the need for manual resetting.

Thanks to the 1/4" SAE flare connection, quick, leak-free, and solder-free installation is easily possible. The high-quality workmanship and proven ALCO quality ensure a long service life, even under difficult operating conditions .

✅ Product advantages at a glance:

• Pressure range: -0.5 to 7 bar – ideal for low-pressure applications

• Differential pressure adjustable: 0.5 to 5 bar – maximum flexibility in the system

• Automatic reset: trouble-free operation without manual intervention

• 1/4" SAE flare connection: tool-free installation without soldering

• Single contact (single signal): easy system integration

• High-quality design for use in commercial refrigeration, HVAC systems & heat pumps

🔧 Technical data:

• Model: ALCO PS1-A3A

• Article number: 4370700

• Pressure range: –0.5 to 7 bar

• Differential pressure: adjustable from 0.5 to 5 bar

• Function: Automatic reset

• Connection: 1/4" SAE flare

• Signal type: Single contact (Single Signal)

• Applications: Commercial refrigeration systems, air conditioning units, heat pumps, HVAC systems

Weight: approx. 0.18 kg
Scope of delivery: 1 × ALCO PS1-A3A low-pressure pressure switch, automatically resetting, adjustable