Low-pressure pressure switch ALCO PS1-A3K, 4370600, -0.5 – 7 bar, automatic, differential pressure 0.5 – 5 bar, 1/4" SAE

The ALCO PS1-A3K is a high-quality low-pressure pressure switch specifically designed for the precise monitoring of refrigerant pressures in commercial refrigeration systems, split-system air conditioners, heat pumps, and HVAC systems . With a switching range of -0.5 to 7 bar, this model is ideal for the low-pressure range in the refrigeration circuit.

The switch is equipped with an adjustable differential pressure of 0.5 to 5 bar , allowing the switching points to be flexibly adjusted to individual system requirements. The automatic reset guarantees uninterrupted and maintenance-free operation – ideal for continuous operation in demanding environments.

Thanks to the 1/4" SAE flare connection, the pressure switch can be integrated into existing systems quickly, safely, and without soldering . The robust construction in proven ALCO quality ensures high reliability and a long service life.

✅ Product advantages at a glance:

• Wide switching range: -0.5 to 7 bar – ideal for sensitive refrigeration systems

• Adjustable differential pressure: 0.5 to 5 bar – flexibly adaptable to system behavior

• Automatic reset: no manual intervention required

• 1/4" SAE flare connection: tool-free, leak-free installation

• Durable construction: for demanding commercial applications

• Ideal for commercial refrigeration, heat pumps, split air conditioning systems and HVAC systems

🔧 Technical data:

• Model: PS1-A3K

• Article number: 4370600

• Pressure range: –0.5 to 7 bar

• Differential pressure: adjustable from 0.5 to 5 bar

• Function: automatically reset

• Connection: 1/4" SAE flare

• Signal type: Single contact (Single Signal)

• Type: Low pressure pressure switch

• Applications: Commercial refrigeration systems, split air conditioners, heat pumps, HVAC systems