Ranco dual pressure switch, -0.3 – 7.0 bar & 7 – 30 bar, differential pressure 0.6–4.0 bar / 3.5 bar fixed, automatic, flare 1/4" SAE

The Ranco dual-pressure pressure switch is specifically designed for the simultaneous monitoring of low- and high-pressure circuits in refrigeration and HVAC systems . It combines two pressure ranges in a compact, robust housing and is ideal for protecting compressors against underpressure and overpressure.

The printing areas at a glance:

• Low pressure: –0.3 to 7.0 bar
  → Differential pressure adjustable: 0.6 – 4.0 bar

• High pressure: 7 to 30 bar
  → Differential pressure fixed: 3.5 bar

Thanks to the automatic reset , the switch automatically returns to the operating position after being triggered – perfect for continuous monitoring without manual intervention . The integrated dual-signal function allows simultaneous control of two switching points, making the switch particularly versatile in commercial refrigeration systems, heat pumps, and air conditioning systems .

With the 1/4" SAE flare connection, the device can be installed quickly, safely and leak-free – ideal for quick replacement during service .

✅ Your benefits at a glance:

• Compact dual pressure switch for ND/HD in one device

• Automatic reset – maintenance-free continuous operation

• Adjustable differential pressure in the low pressure range (0.6–4.0 bar)

• Fixed differential pressure in the high pressure range (3.5 bar)

• Dual-signal contact – separate control of two switching points

• Quick installation with 1/4" SAE flare connection

• Ideal for compressor protection, HVAC, heat pumps and commercial refrigeration

🔧 Technical data:

• Brand: Ranco

• Type: Double push button switch

• Low pressure range: –0.3 – 7.0 bar
  • Differential pressure: 0.6 – 4.0 bar (adjustable)

• High pressure range: 7 – 30 bar
  • Differential pressure: 3.5 bar (fixed)

• Function: Automatic reset

• Connection: 1/4" SAE flare

• Contact: Dual signal (two independent switching points)

• Applications: Commercial refrigeration, heat pumps, HVAC systems, compressor protection

Weight: approx. 0.27 kg
Scope of delivery: 1 × Ranco double pressure switch with automatic reset