Danfoss Scroll Compressor 3PH Multi Refrigerant POE Rotalock - SY300A4PBI

Danfoss Scroll Compressor 3PH Multi Refrigerant POE Rotalock

Part Number: SY300A4PBI

Danfoss Scroll Compressor 3PH Multi Refrigerant POE Rotalock

Part Number: SY300A4PBI

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  • Danfoss is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications. Danfoss have a wide range of high quality and innovative products that help your company to find the best possible energy efficient solution that respects the environment and reduces total life cycle costs. 

    Danfoss have 40 years of experience within the development of hermetic compressors which places them amongst the global leaders in the industry. Today Danfoss operate from engineering and manufacturing facilities spanning across three continents.

    This SY300A4PBI model is supplied with a motor protection module fitted inside the compressor terminal box. The protection module provides protection against overheating, overloading & phase loss or reversal. The motor protector comprises of a control module connected to PTC sensors embedded in the motor windings. Once tripped the module has a 5 minute start delay providing the windings have cooled below the response temperature. The time delay can be cancelled by resetting the mains (L-N disconnected) for approximately 5 seconds (monitoring function is inactive for 20 seconds after shutdown).  The SY/SZ240 to SY/SZ380 compressors have an internal safety relief device that is set to open between the high & low side if the differential pressure between the suction & discharge surpasses 31 to 38 bar. 

    The SY range of compressors benefit from the improved design features below to achieve the highest efficiency: 

    • Gas circulation, motor cooling and oil behaviour are improved on light commercial platform models by a new patented motor cap design. 

    • Part protection and assembly reduces internal leaks and increases life durability. 

    • Improved part isolation reduces greatly acoustic levels

    • Gas intake design induces higher resistance to liquid slugging.

    • Multi-refrigerant (R134a, R22, R407C, R513A) optimized scroll profile and charged with PVE oil.

    Note: Rotalock service valves & crankcase heaters are not supplied with compressor & should be purchased separately if required.


  • General Specifications
    Nominal Cooling Capacity70.8 kW
    Swept Volume437.5 cm³ cm³
    Suction Line ConnectionRotolock 2-1/4" UNF 1-5/8" ODF
    Discharge Line ConnectionRotolock 1-3/4" UNF 1-1/8" ODF
    Weight157 kg
    Oil Charge8 L
    Oil Type320SZ P.O.E.
    ElectricsStud M5
    Electrical Specifications
    Motor Type3PH
    Max Continuous Current69 amps
    Locked Rotor Amps270 amps
    Rated Load Amps49.3 amps
    Crankcase Heater 1230 volts 130 watts

    1. Crankcase Heaters are not supplied with compressors & should be purchased separately if required

  • Crankcase Heater7773122
  • Contact your local Airefrig Branch for Capacity Information

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