
ABB - Low Voltage Drives
ACS550-U1-031A-4+K466
Alternate Item Number: 3AUA0000018729
UPC: 662348047217
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Overview
The ABB ACS550 AC Drive, SKU: ACS550-U1-031A-4+K466, is a versatile and reliable variable frequency drive designed for precise motor control in industrial applications. This unit offers a robust 20 horsepower output and a 31A current rating, suitable for a wide range of motor sizes. It operates with an input voltage range of 3-380-480V, accommodating standard industrial power grids. The drive features a Type 1/IP21 enclosure, providing protection against dust and water ingress, making it suitable for wall-mount installations in various environments. Its advanced capabilities include an overload capacity of 1.1, ensuring stable operation under demanding load conditions. The compact dimensions of 23 x 8 x 9.1 inches facilitate installation in space-constrained areas. Enhanced connectivity is provided through integrated Ethernet support, including Modbus/TCP and EtherNet/IP protocols, enabling seamless integration into modern automation systems and facilitating remote monitoring and control. This drive is an excellent choice for applications requiring efficient and accurate speed regulation for pumps, fans, conveyors, and other motor-driven equipment. Trust ABB's extensive experience in low-voltage drives for dependable motor control solutions.
- 20 HP motor capacity for demanding applications
- 31A current rating for robust motor support
- 3-380-480V input voltage range
- Type 1/IP21 enclosure for dust and water protection
- Integrated Ethernet with Modbus/TCP and EtherNet/IP support
Specifications
Connection Type | Ethernet (Modbus/TCP, EtherNet/IP) |
Control Panel | Advanced |
Current Rating | 31 A |
Frame Size | R3 |
Input Phase | 3-Phase |
IP Rating | IP21 |
Mounting Type | Wall Mount |
NEMA Rating | Type 1 |
Options | Ethernet (Modbus/TCPEtherNet/IP) |
Output Current | 31 |
Output Phase | 3-Phase |
Poles | 3-Phase |
Series | ACS550 |
Size | 23 in x 8 in x 9.1 in |
UL Type | 1 |
Voltage | 480 |
Voltage Range | 380-480 |
Voltage Rating | 380-480 VAC |
Package Dimensions (L x W x H) | 9.1 in x 8 in x 23 in |
Package Dimensions (L x W x H) | 23.114 cm x 20.32 cm x 58.42 cm |
Package Weight (Imperial) | 35.000 L |
Package Weight (Metric) | 15.876 kg |

FENA-21
The FENA 21 DualPort module supports Three protocols Modbus-TCP, EtherNet/IP, and the PROFInet IO RT network. The Modbus-TCP protocol is simply the Modbus protocol used on top of Ethernet-TCP/IP. Modbus-TCP is an open Industrial Ethernet network which has been specified by the Modbus-IDA User Organization. EtherNet/IP is based on the Common Industrial Protocol (CIP), which is also the framework for both the ControlNet and DeviceNet network protocols. PROFInet IO RT is an open network based on the PI Organization standard.














