Johnson Controls WHA-P399-400 Wiring Harness

The Johnson Controls WHA-P399-400 is a specialized 13-foot 3-inch low pressure transducer wiring harness designed for precision interfacing within commercial refrigeration and HVAC systems. This OEM Johnson Controls harness features a three-pin connector specifically engineered for the P399 series electronic pressure transducers. Built to withstand the rigors of mechanical rooms, the cable assembly provides stable signal transmission for monitoring suction or discharge pressures, ensuring the HVAC controller receives accurate voltage feedback. The 159-inch length offers significant flexibility for routing through conduit or cable trays from remote sensor locations to the main control panel without signal degradation.

Key Technical Benefits

• Direct Compatibility: Seamlessly integrates with the Johnson Controls P399 series transducers for reliable pressure monitoring.
• Extended Reach: The 13.25-foot length eliminates the need for field-splicing, maintaining factory-spec terminal integrity.
• Rugged Construction: Designed for high-vibration environments common in commercial HVACR applications.
• Simplified Wiring: Features a pre-terminated 3-pin connector to reduce installation time and prevent wiring errors in the field.
• Signal Stability: Utilizes high-grade conductors to ensure precise analog signal transfer for sensitive control loops.

Common Installation Questions

What is the pin configuration for this harness?
The WHA-P399-400 utilizes a standard three-wire configuration compatible with the P399 transducer terminal, matching the power, ground, and output signal requirements of standard refrigeration controllers.

Can this harness be used in high-temp applications?
This wiring harness assembly is rated for standard mechanical room temperatures; however, it should be routed away from discharge lines or direct heat sources to prevent jacket compromise.

Is this a direct replacement for shorter P399 cables?
Yes, this 13-foot 3-inch model can replace shorter variants like the WHA-P399-100 if additional slack or a different routing path is required for the pressure sensor installation.

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.