General description Output Air Compressor Pressure Switch designed for efficient control of air compressor operations, featuring a pressure range of 90-120 PSI (0.5-0.8 MPA). This model, SG-3B, is a vertical one-way switch that ensures reliable performance. Technical specifications Model: SG-3B Pressure range: 0.5-0.8 MPA (90-125 PSI) Rated voltage: 220/380V Dimensions: 82*52*127 MM (length*width*height) Exhaust pipe size: 6 MM Contact method: normally closed Connection size: 1/4 inch internal thread (approximately 12 MM) Pressure relief port outer diameter: 9.5 MM Maximum current: 16 A Working pressure: 5-8 kg (90-125 PSI) Service life: 80,000 cycles