ABB ACS550-U1-078A-4 | 3AUA0000009443

ABB ACS550-U1-078A-4 | 50 HP Variable Frequency Drive, IP21

Global Commercial Alias: ACS550-U1-078A-4
Product ID: 3AUA0000009443
ABB Type Designation: ACS550-U1-078A-4
Catalog Description: General purpose AC drive, 50 HP, 78 A, 3-phase, 380–480 V, IP21, wall-mounted

Overview

The ABB ACS550-U1-078A-4 is a robust 50 HP variable frequency drive built for industrial and commercial motor control needs. With a 3-phase input voltage of 380–480 V and 78 A output current, it offers reliable and energy-efficient performance in a compact IP21 wall-mountable enclosure.

Key Features

• Motor Power: 37 kW (50 HP)

• Input Voltage: 380–480 V AC, 3-phase

• Output Current: 78 A

• Output Frequency: 0 to 500 Hz

• Control Methods: Scalar (V/f), Sensorless Vector

• Overload Capacity:

  • Heavy Duty: 150% for 60 sec

  • Normal Duty: 110% for 60 sec

• Built-in EMC Filter: Category C2

• Safety Function: Safe Torque Off (STO)

• Communication: Modbus RTU (RS-485)

• User Interface: Integrated keypad with navigation assistant

• Enclosure Type: IP21 wall-mounted

• Cooling Method: Forced air cooling

Technical Specifications

• Model Number: ACS550-U1-078A-4

• Input Frequency: 50/60 Hz

• Analog Inputs: 2

• Digital Inputs: 6

• Analog Outputs: 2

• Relay Outputs: 3

• Operating Temperature: -10°C to +50°C

• Dimensions (H x W x D): 600 mm x 203 mm x 229 mm

• Weight: Approx. 17.3 kg

• Certifications: CE, UL, cUL

Applications

• Industrial ventilation and HVAC

• Pumping systems

• Conveyor systems

• General-purpose automation and processing

Product Description

The ACS550-U1-078A-4 is engineered for energy efficiency and simplicity. With advanced safety functions, EMC filtering, and assistant-guided configuration, it meets the high demands of modern automation environments. Its compact design makes it ideal for space-limited installations.

Why Choose ABB ACS550-U1-078A-4?

• Powerful and compact solution for 50 HP motors

• Fast installation and configuration

• Integrated EMC and STO safety

• Ideal for various industrial applications

Order Now

Available for global delivery with technical support and documentation.

Return to the ABB ACS550 General Purpose Drives collection

Explore ABB Industrial Drives main category

NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply