Danfoss 060B201291 MP55 Differential Pressure Switch 1/4" Flare 60 Second Delay

The Danfoss 060B201291 MP55 is a differential oil pressure control switch designed for refrigeration and air conditioning systems. This safety switch monitors and controls pressure differentials to ensure proper system operation and protect compressor lubrication systems from low oil pressure conditions.

Key Features:

• Differential pressure regulation range: 4.3 to 65 psig (0.3 to 4.5 bar)
• Maximum working pressure: 175 psig on low-pressure side (17 bar)
• 60-second delay timer prevents false tripping during system start-up
• 1/4 inch male flare connection for easy installation
• Manual minimum reset function for safety compliance
• Durable brass body construction with stainless steel diaphragm
• IP20 enclosure rating for protection against solid objects

This pressure switch is commonly used in commercial refrigeration and HVAC applications where compressor lubrication monitoring is critical. The built-in time delay allows the system to establish proper oil pressure during startup before activating the safety circuit. Manual reset ensures that system issues are addressed before restart.