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Overview

Pneumatic-electric switches convert a controller's pneumatic signal to electrical switching, providing start and stop control. Replacements 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.

Product Specifications

Application
Pneumatic / Electric Switch
Dimensions (in.)
5 3/8 in. high x 3 3/8 in. wide x 2 in. deep
Dimensions (mm)
137 mm high x 86 mm wide x 51 mm deep
Maximum Safe Operating Pressure (psi)
30 psi, maximum
Maximum Safe Operating Pressure (kPa)
207 kPa, maximum
Temperature Range (F)
40 F to 140 F
Temperature Range (C)
4 C to 66 C
Includes
Case
Comments
Factory Calibrated at 10 psi
Mounting
Surface (includes case)
Frequency
60 Hz
Approvals, Underwriters Laboratories Inc.
Category SDFY or SDFY2
Electrical Connections
Screw terminals
Operating Humidity Range (% RH)
5 to 95% RH, 80 F (27C) max wet bulb
Approvals, Canadian Underwriters Laboratories Inc.
Listed, Volume II
Differential Pressure Range (psi)
2 psi
Differential Pressure Range (kPa)
14 kPa
Switch Operation
Converts pneumatic signal to electrical switching action (SPDT)
Switching Action
Make R-W on pressure rise to setpoint plus differential,Make R-B on pressure fall to setpoint
Pilot Duty Ratings
750 VA @ 125, 250 or 277 Vac
Switch Type
Pneumatic/Electric Switch
Air connections
Barb fitting for 1/4 in. (6 mm) O.D. plastic tubing
Setpoint Range (psi)
Field Adjustable--2 to 24 psi
Setpoint Range (kPa)
Field Adjustable--14 to 165 kPa
Motor Load
1 hp @ 125 Vac, 2 hp @ 250 or 277 Vac
Resistive Load
25A @ 125, 250 or 480 Vac
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