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Honeywell P643 Pneumatic/Electric Switch

Pneumatic/Electric Switch

Used to convert a pneumatic signal from a controller to an electrical switching action 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. Adjustable setpoint.

• Adjustable differential.
• Externally visible scales.
• Heavy-duty switch.
• Integral gage connection.

Select a link under the "item" tab below to order.

Cat #VoltageIncludesElectrical ConnectionsDifferential Pressure Range (psi)Differential Pressure Range (kPa)Switching Pressures (psi)Switching Pressures (kPa)
P643A1007120 Vac; 208 Vac; 240 Vac; 277 Vac; 480 VacSPDT switchKnockouts (3) for 1/2 in. conduit3 to 13 psi adjustable20 to 90 kPa adjustable0 to 22.5 psi0 to 155 kPa
Air Connections: Compression fitting 1/4 in. (6 mm) O.D. tubing
Current: 120 Vac: 8.0 AFL, 48.0 LRA, 17.0 A resistive
208/240 Vac: 5.1 AFL, 30.6 ALR, 17.0 A resistive
270 Vac: 17.0 A resistive
480 Vac: 3.5 AFL, 21.0 ALR, 10.0 A resistive
Frequency: 50 Hz; 60 Hz
Temperature Range: -30 F to +125 F (-34 C to +52 C)
Maximum Safe Operating Pressure: 25 psi (170 kPa)
Switch Operation: Converts pneumatic signal to electrical switching action
Switch Type: Pneumatic/Electric Switch
Mounting: Holes in back of case
Underwriters Laboratories Inc. Listed

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