ACS550-U1-077A-6 ABB Variable Frequency Drive 75HP 55kW 77A 500–600V 3-Phase NEMA 1 VFD

Description:

• Genuine ABB ACS550 general-purpose variable frequency drive (VFD) for industrial motor speed control
• Rated for 75 HP (55 kW) with a 77 A nominal output current
• Designed for 500–600 VAC, 3-phase power systems
• NEMA 1 / IP21 enclosure for indoor industrial installations
• Built-in PID controller, energy optimization, flying start, and automatic torque boost for efficient motor operation
• Ideal for pumps, fans, compressors, conveyors, mixers, HVAC systems, and other variable torque or constant torque applications
• Integrated EMC filter and swinging choke technology help reduce harmonics and improve power quality
• User-friendly assistant control panel simplifies commissioning, programming, and diagnostics
• Supports Modbus RTU communication and optional fieldbus adapters for industrial automation integration
• Reliable solution for manufacturing, water and wastewater treatment, HVAC, material handling, and OEM machinery

Specifications:

• Manufacturer Name: ABB
• Part Number (MPN): ACS550-U1-077A-6
• Product Series: ACS550
• Product Type: Variable Frequency Drive (VFD)
• Motor Power:
  • 55 kW
  • 75 HP
• Rated Output Current: 77 A
• Input Voltage: 500–600 VAC
• Input Phase: 3-Phase
• Input Frequency: 48–63 Hz
• Output Frequency: 0–500 Hz
• Enclosure Rating: NEMA 1 / IP21
• Frame Size: R6
• Control Method: Scalar (V/Hz) and Sensorless Vector Control
• Communications:
  • Built-in Modbus RTU (RS-485)
  • Optional fieldbus adapters
• Mounting Type: Wall Mount
• Cooling Method: Forced Air
• Operating Temperature:
  • -10°C to +40°C (without derating)
• Applications:
  • Pumps
  • Fans
  • Compressors
  • Conveyors
  • HVAC Systems
  • Material Handling
  • Industrial Automation
  • Water & Wastewater
  • OEM Machinery

Dimensions:

• Height: 655 mm (25.8 in)
• Width: 350 mm (13.8 in)
• Depth: 305 mm (12.0 in)

Weight:

• Approximate Weight: 34 kg (75 lb)