Bitzer HSK6451-50 Semi-Hermetic Screw Compressor

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Technical Specifications

• Model: HSK6451-50

• Refrigerant: R404A (also compatible with R134a, R507A, R407A/F, R448A, R449A, R1234yf, R1234ze, R515B)

• Cooling Capacity: 71.8 kW (at -10°C evaporating / 45°C condensing)

• Power Input: 37.9 kW

• COP (Efficiency): 1.90

• Displacement:

  • 50Hz: 140 m³/h

  • 60Hz: 168 m³/h

• Voltage: 380–415V / 3 Phase / 50Hz

• Max Operating Current: 79.0 A

• Starting Current (Rotor Locked): 206.0 A (D) / 355.0 A (DD)

• Max Power Input: 50.0 kW

• Weight: Approx. 238 kg

• Suction Connection: 54 mm – 2 1/8”

• Discharge Connection: 42 mm – 1 5/8”

• Sound Pressure Level @ 1m: 78.0 dB(A)

• Capacity Control: 100–75–50%

• Integrated Features:

  • Discharge gas temperature sensor

  • Start unloading

  • Oil flow control

  • Motor protection

  • Suction shut-off valve

• Optional Upgrades:

  • Discharge shut-off valve

  • ECO connection

  • Sound measurement kit

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Key Features

✅ German Engineering – Built to the highest standards for long-lasting, reliable performance in demanding industrial applications.

✅ High Efficiency – Delivers maximum performance in both full and part-load operations.

✅ Stepless Capacity Control – Modulates cooling capacity to match system demand, ensuring optimal energy usage.

✅ Robust Design – Suitable for 24/7 continuous operation with optional IP66 motor protection.

✅ Advanced Monitoring – Compatible with the Bitzer IQ Module for intelligent diagnostics and control.

✅ Flexible Refrigerant Use – Supports a broad range of refrigerants, including eco-friendly low-GWP options.

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Applications

• Large-scale industrial air-conditioning systems

• Cold storage and logistics hubs

• Food processing and distribution centers

• Process cooling in manufacturing plants

• Marine and offshore refrigeration

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Shipping & Availability

✅ Standard Voltage: 380–415V / 3 Phase / 50Hz

✅ Global Shipping: Export-grade packaging ensures safe worldwide delivery.

✅ Lead Time: Standard 50Hz electrical version is typically in stock. For special electrical configurations (60Hz or other voltages), please allow an additional 2–3 weeks.