ACS550-U1-06A1-6 ABB AC Variable Frequency Drive 4kW 500-600VAC 3-Phase NEMA 1 VFD

Description:

• Genuine ABB ACS550 general-purpose AC variable frequency drive (VFD) for industrial motor speed control
• Rated for 4 kW (5 HP Normal Duty / 3 HP Heavy Duty) on 500–600 VAC, 3-phase power systems
• Delivers 6.1 A Normal Duty and 3.9 A Heavy Duty output current
• NEMA 1 / IP21 enclosure suitable for indoor industrial installations
• Advanced sensorless vector control provides accurate motor speed and torque performance
• Integrated EMC filter, Modbus RTU (RS-485) communication, PID controller, and harmonic reduction choke for simplified installation
• Built-in keypad with startup assistant for fast commissioning and easy parameter configuration
• Designed for variable and constant torque applications including pumps, fans, conveyors, mixers, compressors, and HVAC equipment
• Part of ABB's proven ACS550 series for industrial automation and energy-efficient motor control
• Legacy product; commonly replaced by the ABB ACS580 series while remaining widely used for maintenance and expansion of existing systems.

Specifications:

• Manufacturer Name: ABB
• Part Number (MPN): ACS550-U1-06A1-6
• Product Series: ACS550
• Product Type: AC Variable Frequency Drive (VFD)
• Rated Motor Power:
  • 4 kW
  • 5 HP (Normal Duty)
  • 3 HP (Heavy Duty)
• Input Voltage: 500–600 VAC
• Input Phase: 3-Phase
• Input Frequency: 48–63 Hz
• Output Current:
  • 6.1 A (Normal Duty)
  • 3.9 A (Heavy Duty)
• Enclosure Rating:
  • NEMA 1
  • IP21
• Frame Size: R2
• Control Method: Sensorless Vector Control
• Built-In Features:
  • PID Controller
  • EMC Filter
  • Modbus RTU (RS-485)
  • Swinging Choke for Harmonic Reduction
  • Keypad with Startup Assistant
• Cooling Method: Forced Air
• Mounting Type: Wall Mount
• Certifications:
  • UL Listed
  • cUL Listed
  • CE
• Applications:
  • Pumps
  • Fans
  • HVAC Systems
  • Conveyors
  • Mixers
  • Compressors
  • Industrial Automation
  • OEM Machinery

Dimensions:

• Frame Size: R2
• Compact wall-mounted drive suitable for industrial control panels and machinery installations.

Weight:

• Approximate Weight: 8.3 kg (18.35 lb).