Johnson Controls P29NC-3 Cutout Control

The Johnson Controls P29NC-3 Cutout Control is a critical safety component designed for heavy-duty refrigeration and industrial applications. This low pressure cutout control features a manual reset mechanism and a built-in 60 second time delay to prevent nuisance shutdowns caused by momentary pressure fluctuations during startup or normal cycling. Engineered for versatility, it operates on a 120/240 Vac dual-voltage circuit and supports a wide pressure range from 20" Hg to 100 PSIG. The 36" capillary provides flexible mounting options, while the low-profile pressure element is built to withstand high overrun pressures during system testing. Whether you are managing chiller low-temperature protection or monitoring forced oil lubrication systems, this Johnson Controls pressure switch delivers professional-grade reliability. The "trip-free" reset design ensures the equipment cannot be restarted until the fault condition is cleared and the manual button is depressed, protecting compressors from sustained low-suction conditions or loss of lubrication.

• Enhanced Equipment Protection: Prevents compressor damage by shutting down the system during prolonged low-pressure events.
• Reduced Nuisance Trips: The 60-second time delay relay allows pressures to stabilize before triggering a lockout.
• Broad Compatibility: Universal 120/240 Vac operation and 20" Hg to 100 PSIG range fits most commercial HVACR specs.
• Durable Construction: Features a dust-protected snap-action switch and a rugged 36-inch capillary tube.
• High Overpressure Tolerance: Designed to handle up to 325 PSIG test pressure without damaging internal calibration.

Common Questions

Can the time delay be adjusted in the field?
No, the P29NC-3 features a factory-calibrated 60-second delay. However, the internal timing mechanism is replaceable if the relay assembly fails.

Is this control compatible with ammonia refrigerants?
This specific model is designed for non-corrosive refrigerants. For ammonia applications, a specialized version with compatible bellows and connectors must be used.

How do I wire this for a 208V control circuit?
For 208V systems, it is recommended to use one leg of the circuit and a neutral wire to power the 120V heater circuit within the control.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.