The Johnson Controls P100DA-2 is a professional-grade encapsulated pressure control designed for heavy-duty high-side protection in commercial refrigeration and HVAC applications. This direct mount pressure switch features a single-pole single-throw (SPST) configuration adjusted to open on pressure rise at a fixed setpoint of 475 PSIG. Engineered for reliability in demanding environments, the P100DA-2?which is functionally identical to the P100DA-2C?utilizes 120/240 Vac contact ratings and a lockout manual reset to ensure the system remains offline until a technician confirms safe operating conditions. The open construction design and compact footprint allow for seamless integration into tight manifold spaces. Compatible with non-corrosive refrigerants and high-pressure systems like R410A, this manual reset pressure control provides a 3 HP rating and a 1/4 inch internal flare connection with a valve depressor for straightforward installation. This robust HVAC high pressure switch is the industry standard for preventing compressor failure and ensuring long-term system stability through precise, tamper-proof setpoint management. Key Benefits: Critical High-Limit Protection: Fixed 475 PSIG setpoint prevents catastrophic system failure by cutting power when pressure exceeds safe limits. Trip-Free Manual Reset: Ensures the lockout cannot be overridden by holding the reset button, requiring a full system check by a contractor. Direct-Mount Efficiency: 1/4 inch SAE female flare connection allows for direct installation on the system piping without additional brackets. Environmental Resilience: Encapsulated snap-action design protects internal electrical contacts from dust and moisture. Exact Compatibility: Replaces and matches the specifications of the P100DA-2C for simplified inventory management. Common Questions: Is the P100DA-2 compatible with R410A systems? Yes, the 475 PSIG setpoint is specifically calibrated for high-pressure refrigerants like R410A where high-limit manual reset safety is required. Can the pressure setpoint be adjusted in the field? No, the P100 series controls are factory-calibrated and non-adjustable to prevent tampering and ensure safety compliance. What is the difference between the P100DA-2 and the P100DA-2C? These models are identical in technical specifications, electrical ratings, and pressure setpoints; they are interchangeable in all professional HVACR applications. 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.
