Danfoss MTZ144-4VI Compressor

R404A, R407C, R134A, R407F Reciprocating Compressor, Polyester Oil, 380-400 Volt 3 Phase 50 Hz / 460 Volt 3 Phase 60 Hz, R134a 96936 Btu/h, (Btu/h based on Evaporator Temperature 45 F, Condenser Temperature 130 F, SuperHeat 20 F, SubCooling 15 F) R404A / R507A 80472 Btu/h, (Btu/h based on Evaporator Temperature 20 F, Condenser Temperature 120 F, SuperHeat 20 F, SubCooling 0 F) 1 3/4" Rotolock Suction with 1 1/8" ODF (sweat) Sleeve, 1 1/4" Rotolock Discharge (Liquid) with 3/4" ODF (sweat) Sleeve, 3/8" npt Oil Equalization Connection

MTZ144-4VI is the cross of MTZ144HV4AVE

Danfoss MTZ144-4VI Reciprocating Compressor – MT Refrigeration, 380–415V / 460V, POE Oil

The Danfoss MTZ144-4VI hermetic reciprocating compressor is engineered for medium-temperature (MT) refrigeration applications requiring durability, efficiency, and broad refrigerant compatibility. Designed for commercial refrigeration systems, this fixed-speed, 4-cylinder compressor delivers reliable performance across multiple operating conditions.

🔧 Key Features & Benefits

• Model: MTZ144HV4AVE / MTZ144-4VI

• Technology: Hermetic reciprocating

• Application: Refrigeration – Medium Temperature (MT)

• Capacity Control: Fixed speed

• Motor Protection: Internal overload protector

• Oil Type: Polyester (POE), Oil reference 175PZ

• Configuration: Single compressor

❄️ Refrigerant Compatibility

Supports a wide range of refrigerants including:

R134a • R404A • R407A • R407C • R407F • R448A • R449A • R452A • R513A

⚡ Electrical Specifications

• Power Supply:

  • 380–415V / 3 Phase / 50 Hz

  • 460V / 3 Phase / 60 Hz

• Nominal Voltage:

  • 400V (50 Hz)

  • 460V (60 Hz)

• Frequency: 50/60 Hz

• MCC: 36 A

• LRA: 130 A

• Speed:

  • 2900 rpm (50 Hz)

  • 3500 rpm (60 Hz)

📊 Rated Cooling Capacity

• R134a: 96,936 Btu/h
  (Evap 45°F, Cond 130°F, SH 20°F, SC 15°F)

• R404A / R507A: 80,472 Btu/h
  (Evap 20°F, Cond 120°F, SH 20°F, SC 0°F)

🔩 Connection Details

• Connection Type: Rotolock

• Suction:

  • 1 3/4" Rotolock

  • 1 1/8" ODF (sweat) sleeve

• Discharge (Liquid):

  • 1 1/4" Rotolock

  • 3/4" ODF (sweat) sleeve

• Oil Equalization: 3/8" flare SAE

• Gauge Port LP: Schrader

📐 Physical Specifications

• Net Weight: 69 kg

• Gross Weight: 72.75 kg

• Height: 540 mm

• Diameter: 352 mm

• Swept Volume: 241.87 cm³

• Oil Charge: 3.9 L

• Color: Blue

• IP Rating: IP54 (with cable gland)

📦 Included with Shipment

✔ Initial oil charge
✔ Mounting kit (grommets, bolts, nuts, sleeves, washers)
✔ Suction & discharge solder sleeves
✔ Rotolock nuts & gaskets
✔ Installation instructions

✅ Certifications & Compliance

CE • UL • UKCA
EU RoHS & China RoHS compliant (with exemptions)

⚠ Regulatory Notices

• Proposition 65:
  WARNING: Cancer and Reproductive Harm
  www.p65warnings.ca.gov

• U.S. EPA Notice:
  For installations using EPA-restricted refrigerants, this product is approved for servicing existing equipment only.

🏷 Product Identification

• Type: MTZ144

• Product Group: Hermetic Compressors

• EAN: 5702428888288

• Drawing Number: 8504011e

The Danfoss MTZ144-4VI Compressor is an excellent choice for technicians and contractors seeking a high-performance MT refrigeration compressor with dependable operation, flexible refrigerant support, and industry certifications.

👉 Ideal for commercial refrigeration, cold storage, and process cooling systems.

Warranty policy for this compressor is one year from purchase and is only issued if an exact replacement compressor is ordered from our same vendor.