Danfoss 060B205366 MP54 Pressure Control

The Danfoss 060B205366 MP54 Pressure Control is a specialized oil differential pressure switch engineered to provide critical compressor protection in commercial refrigeration and HVACR systems. Designed as a safety mechanism, this unit monitors the pressure difference between the lubricating oil pump and the suction side of the crankcase. If the differential pressure falls below the factory-set threshold, the integrated thermal time relay begins a countdown, eventually cutting the circuit to the compressor to prevent mechanical failure from insufficient lubrication. This specific model features a 36-inch capillary tube with 1/4-inch flare nut connections, allowing for flexible mounting and reliable sensing in high-vibration environments.

Operating within an ambient temperature range of -40°F to 140°F, the MP54 differential pressure control is compatible with HCFC and non-flammable HFC refrigerants. It utilizes a robust SPDT contact function and is rated for 120V or 240V AC/DC control circuits. Unlike adjustable models, this Danfoss MP54 provides a fixed differential setting, ensuring consistent safety parameters that cannot be tampered with in the field. The inclusion of manual reset functionality requires a technician to investigate the root cause of the oil pressure drop before restarting the system, further safeguarding expensive compressor assets.

• Reliable Lube Oil Protection: Automatically shuts down the compressor if oil pressure fails, preventing catastrophic bearing and scroll damage.
• Internal Thermal Time Relay: Features a fixed 120-second release time to prevent nuisance tripping during initial start-up or temporary pressure fluctuations.
• Durable Construction: Built with stainless steel bellows and a 36-inch capillary tube to withstand harsh mechanical rooms and constant vibration.
• Universal Voltage Compatibility: Works seamlessly across 120V and 240V AC/DC systems, making it a versatile stock item for service trucks.
• Tamper-Proof Calibration: Fixed differential setting ensures the system operates strictly within Copeland specifications and other OEM requirements.

• Can this control be used with Ammonia (R717)? No, the MP54 series is intended for fluorinated refrigerants; for ammonia applications, the MP55A version with specialized bellows is required.
• How do I test the time delay function? Technicians can use the built-in manual trip/test device on the front of the unit to verify the safety circuit and timer without needing external jumpers.
• What happens if the power fluctuates? The thermal relay is temperature-compensated to ensure timing accuracy remains consistent even if the mechanical room ambient temperature varies.

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.