Ranco O10-2054 Control

The Ranco O10-2054 High Pressure Control is a rugged, single-function pressure switch designed for fan cycling control and head pressure management in commercial refrigeration and air conditioning systems. This veteran-preferred SPST open-on-low (close on high) controller features a broad adjustable pressure range of 100 to 400 PSI, making it compatible with high-pressure refrigerants like R-22, R-134A, and R-502. Engineered with a heavy-duty plated steel frame and laser-welded bellows, this unit ensures reliable operation and a long cycle life in demanding environments. The 48-inch capillary with a 1/4-inch SAE flare nut provides installation flexibility, while the Super Cap capillary protection system significantly reduces the risk of vibration-induced failure at the brazed joints. With its NEMA 1 enclosure, non-conductive cover, and easily accessible raised screw terminals, the O10-2054 auto-reset control allows for quick wiring and precise setpoint adjustments using the high-visibility scale plate and front-located captive cover screw.

• Universal Compatibility: Specifically designed as an HVAC high pressure cutout for fan cycling on systems utilizing R-12, R-22, R-134A, and R-502.
• Precise Fan Cycling: Features an adjustable differential range of 40 to 150 PSI to fine-tune condenser fan cycling and prevent short-cycling.
• Durable Construction: The Ranco O Series is built with laser-welded bellows and a Super Cap system to withstand mechanical stress and system pulsations.
• Simplified Installation: Features a high-visibility scale plate for accurate calibration and a universal mounting design that fits standard brackets.
• Safety and Accessibility: Equipped with a NEMA 1 enclosure and fully accessible screw terminals for secure 24V or 240V wiring.

Is the Ranco O10-2054 an automatic or manual reset control?
This model is an automatic reset pressure control. It will automatically close the circuit once the pressure rises to the cut-in setpoint and open it when the pressure drops below the differential threshold.

What is the difference between this and the Johnson Controls P70AA-118?
The Ranco O10-2054 is a direct professional-grade alternative to the Penn P70AA-118, offering similar electrical ratings and the same 100-400 PSI sensing range for fan cycling applications.

Can I use this control for low-pressure cutout safety?
No, the O10-2054 is a close-on-rise (open-on-low) switch primarily used for cycling fans based on high-side pressure. For low-pressure cutout protection, you should utilize a dedicated Ranco O10-1483 or similar low-pressure sensing device.

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.