Johnson Controls P100DA-86 Pressure Control

For contractors managing high-pressure refrigeration systems, the Johnson Controls P100DA-86 stands as a critical safety component. This encapsulated pressure control is designed for direct mounting, eliminating the need for complex brackets and reducing installation time on-site. As an Open-High switch, it is factory-calibrated to trip at 575 PSIG, providing reliable high-pressure cutout functionality for systems utilizing R410A refrigerant. The SPST (Single-Pole, Single-Throw) configuration ensures a clear break in the electrical circuit upon reaching the setpoint, protecting compressors and downstream components from over-pressure conditions.

The P100DA-86 (identical to the P100DA-86C) features open construction and is rated for 120/240 Vac, making it a versatile choice for a variety of commercial refrigeration parts and HVAC maintenance applications. A key technical advantage is the lockout manual reset on close; once the pressure rises to 575 PSIG and the switch opens, an HVAC technician must manually intervene to reset the control after the system pressure has dropped to a safe level. This "trip-free" design prevents the contacts from being overridden by simply holding the reset button down, ensuring the underlying pressure issue is addressed before operation resumes.

Key Benefits for HVACR Technicians:

• Direct Mount Design: Compact and lightweight construction allowing for immediate installation onto a 1/4 inch SAE female flare fitting with an internal Schrader valve depressor.
• Tamper-Proof Calibration: Factory-set at 575 PSIG to maintain precise, repeatable performance without the risk of field-adjustment errors.
• Durable Encapsulation: The dust-tight, encapsulated pressure switch housing protects internal snap-acting discs from environmental contaminants and vibration.
• Universal Compatibility: Fully compatible with all common non-corrosive refrigerants, though optimized for high-pressure HVAC repair scenarios.

Common Questions & Technical Support:

Is the P100DA-86 compatible with R410A systems?
Yes, with an open setpoint of 575 PSIG, this high pressure control is specifically designed for the higher operating pressures associated with R410A air conditioning service and refrigeration units.

Can I reset the switch while the system is still at high pressure?
No. The "trip-free" manual reset mechanism ensures the switch cannot be reset until the system pressure has sufficiently receded, ensuring a safe restart for the HVAC system.

How do the 120/240 Vac ratings affect my wiring?
This PENN pressure control is rated for standard duty pilot duty (375 VA) or direct motor control (5.8 FLA at 120V / 2.9 FLA at 240V), providing flexibility for both control circuit and fractional horsepower motor 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.