Johnson Controls P100DC-3 Pressure Control

The Johnson Controls P100DC-3 is a purpose-built encapsulated pressure control designed for heavy-duty high-limit protection in commercial refrigeration and air conditioning systems. Field-proven for reliability, this direct mount pressure switch features a tamper-proof, non-adjustable factory-calibrated setpoint, effectively eliminating the risk of unauthorized field adjustments. Built for high-side safety, it utilizes a single-pole single-throw (SPST) switch that is configured to open on pressure rise at 375 PSIG. The integrated lockout manual reset provides a critical "trip-free" safety mechanism, ensuring the electrical contacts cannot be overridden or forced closed until the system pressure drops to a safe level and the physical reset button is depressed.

This PENN pressure control is technically identical to the P100DC-3C and is engineered for versatile installation. It comes equipped with a rugged conduit box featuring an opening for a 1/2" conduit connector, protecting your electrical terminations from environmental contaminants. Rated for 120/240 Vac applications, the high pressure cutout switch is compatible with all common non-corrosive refrigerants. For technicians performing replacements or new installs, this unit mounts directly to 1/4" SAE flare fittings, reducing the need for additional capillary tubes or complex bracketry.

• Enhanced System Safety: The trip-free manual reset ensures equipment cannot restart under unsafe pressure conditions.
• Compact Direct Mounting: Lightweight design allows for direct installation on refrigeration piping, minimizing potential leak points.
• Environmentally Protected: Encapsulated switch construction provides a dust-tight seal for long-term operational integrity.
• Simplified Wiring: Included conduit box facilitates secure 1/2" conduit connections, meeting standard electrical code requirements.
• Exact Compatibility: Direct replacement for the P100DC-3C series, ensuring a precise match for system specifications.

Can the 375 PSIG setpoint be adjusted in the field?
No, the P100 series controls are factory-calibrated and non-adjustable to prevent tampering and ensure consistent high-limit protection.

Will this work with R-410A systems?
This control is compatible with all non-corrosive refrigerants. However, you must verify that 375 PSIG is the correct high-limit cutout for your specific system's operating parameters.

Does the manual reset allow for remote operation?
No, this model requires a manual, physical depression of the reset button at the unit once system pressure has normalized.

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.