Pneumatic-electric switches (P658A,B,E and F) used to convert a pneumatic signal from a controller to an electrical switching action (SPDT) to provide start and stop control of equipment such as fans and pumps. Replacement devices available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell pneumatic/ electric switches.
Features- Models available for surface or panel mounting.
- Barb protected by open cage.
- All ferrous parts plated to prevent corrosion.
- Factory calibrated setpoint field adjustable to meet job requirements.
- Neoprene diaphragm element.
Specifications- Description: Panel Mounted Pneumatic / Electric Switch. No Factory Calibration.
- Switch Type: Pneumatic/Electric Switch
- Switching Action: Make COM-NO on pressure rise to setpoint plus differential
- Switching Action: Make COM-NC on pressure fall to setpoint
- Switch Operation: Converts pneumatic signal to electrical switching action (SPDT)
- Air Connections: Barb fitting for 1/4 in. (6 mm) O.D. plastic tubing
- Electrical Connections: Screw terminals
- Frequency: 60 Hz
- Maximum Safe Operating Pressure (psi): 30 psi
- Differential Pressure Range (psi): 2 psi
- Motor Load: 3/4 hp @ 125, 250 or 277 Vac
- Pilot Duty Ratings: 750 VA @ 125, 250 or 277 Vac
- Resistive Load: 25A @ 125, 250 or 480 Vac
- Setpoint Range (Field Adjustable) (psi): 2 to 25 psi
- Mounting: Panel Mount
- Operating humidity Range: 5 to 95% RH, 80 F (27C) max wet bulb
- Temperature Range: 40 F to 140 F
- Dimensions: 3 1/4 in. high x 2 7/8 in. wide x 1 3/4 in. deep