Danfoss MP55 Oil Pressure Switch (060B017191) – SPDT Contact, Manual Reset, 0.3-4.5 bar

Danfoss MP55 (060B017191) is a reliable differential pressure switch designed specifically to keep the oil pressure levels of compressors under control. With its SPDT contact system, manual minimum reset function and integrated thermal time relay, it provides high safety in industrial refrigeration systems.

Technical Specifications

• Product Code: 060B017191
• Model: MP55
• Differential Pressure Setting Range: 0.3 - 4.5 bar (4.3 - 65 psi)
• Contact Type: SPDT
• Reset Function: Manual Min (manual reset)
• Pressure Connection: 1/4” Flare, Male
• Operating Temperature: -40°C / +60°C
• Maximum Working Pressure: 17 bar (245 psig)
• Maximum Test Pressure: 22 bar (319 psig)
• Impulse Voltage Withstand: 4 kV
• Protection Class: IP20

Electrical Specifications

• Contact Rating: AC15: 2A / 250V – DC13: 0.2A / 250V
• Cable Entry: Pg 13.5 cable entry
• Connection Type: Screw terminals – DIN 40430 standard
• Wire Cross-Section: 0.2–1.5 mm² (depending on cable type)

Functional Features

• Operating Principle: Protects the system by breaking the circuit when the oil pressure drops.
• Setting: Works on the cut-out on falling pressure principle.
• Relay Delay Time: 60 seconds

Compatible Refrigerants

Danfoss MP55 is compatible with the following oil-free and oil-containing refrigerants:

• R134a, R22, R404A, R407A/C/F/H, R448A, R449A/B, R450A, R452A
• R507A/C, R513A, R515B, R11, R12, R113, R124, R422B/D, R438A

Physical Properties

• Gross Weight: 0.788 kg
• Net Weight: 0.66 kg
• Volume: 1.972 liter
• EAN: 5702424499778

Applications

Danfoss MP55 is preferred especially in the following applications:

• Refrigeration and air conditioning systems
• Industrial compressor lubrication monitoring systems
• HVAC applications

The MP55 differential oil pressure switch enables more efficient and safer operation of refrigeration systems by providing safe system control and the possibility of intervention before a failure.