Mini high-pressure pressure switch DANFOSS ACB, 21 – 28 bar, automatic, SPDT, 1/4" SAE flare

The Danfoss ACB mini high-pressure pressure switch is a compact and powerful solution for monitoring and controlling high system pressures in refrigeration, air conditioning, and heat pump systems . With a precise switching range of 21 to 28 bar, it reliably protects compressors, refrigerant circuits, and safety-relevant components from overpressure.

Thanks to its compact design, the ACB is ideal for confined installation situations – for example in split units, compressor housings or mobile systems – without compromising on functionality or robustness.

The integrated SPDT (Single Pole Double Throw) changeover contact allows flexible use as a normally closed or normally closed contact , depending on the requirements of the control or safety logic. The automatic reset ensures reliable continuous operation without the need for manual intervention.

The 1/4" SAE flare connection ensures quick, tight, and solder-free installation – ideal for service calls or series integration .

✅ Product advantages at a glance:

• Precise high-pressure monitoring: 21–28 bar switching range

• SPDT contact: can be used as a normally closed or normally closed contact

• Automatic reset: maintenance-free & reliable

• Compact design: ideal for limited space

• Leak-free SAE flare connection: 1/4" standard connection

• Ideal for refrigeration, air conditioning and heat pump applications

🔧 Technical data:

• Model: ACB

• Manufacturer: Danfoss

• Pressure range: 21 – 28 bar

• Reset: automatic

• Contact type: SPDT (changeover contact)

• Connection: 1/4" SAE flare

• Type: Mini high pressure pressure switch

• Applications: Compact refrigeration systems, air conditioning units, heat pumps, HVAC systems, industrial applications