Johnson Controls P20DB-1 Pressure Control

The Johnson Controls P20DB-1 is a professional-grade high pressure cutout control engineered specifically for air conditioning and refrigeration applications. Designed as a direct field replacement for the P20DB-1C, this manual reset pressure switch provides critical system protection by opening the SPST circuit when head pressure rises above the setpoint. With an adjustable range of 100 psi to 425 psi and a factory setting typically at 400 psi, this compact unit ensures accurate repeatability in demanding commercial environments. The P20DB-1 features a 36-inch capillary with a 1/4 inch sweat section for secure refrigerant line integration and is compatible with non-corrosive refrigerants. Its dust-tight contact unit and trip-free design prevent the contacts from being forced closed, maintaining safety integrity even if the reset button is held down. This control is a drop-in replacement for common models including Ranco G23-5253 and Honeywell P430X series, making it a versatile tool for any service van.

• Precise Pressure Management: Screwdriver-adjustable settings from 100 to 425 psi allow for exact field calibration to equipment specifications.
• Manual Reset Safety: High-limit lockout requires a technician's inspection before system restart, preventing repetitive cycling under fault conditions.
• Compact Footprint: Durable NEMA 1 enclosure is smaller than a standard pack of cigarettes, fitting into tight electrical gallies and control panels.
• Universal Compatibility: Replaces P20DB-1C, Ranco G23-5253, and Robertshaw 3127-220, simplifying inventory for contractors.
• Heavy-Duty Electrical Rating: Rated for up to 16 FLA at 120 VAC and 8 FLA at 240 VAC, handling high-load compressor circuits with ease.

Is the P20DB-1 compatible with R-410A systems?
Yes, its 425 psi range and 450 psi maximum bellows pressure make it suitable for many high-pressure AC applications, though you should always verify the specific system cutout requirements against the 100-425 psi range.

What is the difference between the P20DB-1 and P20DB-1C?
These units are functionally identical. The "C" suffix typically denotes individual packaging for retail or distribution, while the specs, mounting, and performance remain the same.

Can the manual reset be bypassed?
No. This unit features a trip-free manual reset mechanism, meaning the contacts will remain open if the high-pressure condition persists, regardless of the reset button's position.

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.