ABB ACH550-UH-031A-4 | 3AUA0000004054

ABB ACH550-UH-031A-4 | 20 HP HVAC VFD, 480 V, 31 A, NEMA 1 Enclosure

Global Commercial Alias: ACH550-UH-031A-4
Product ID: 3AUA0000004054
ABB Type Designation: ACH550-UH-031A-4
Catalog Description: HVAC AC Drive, 3-phase, 20 HP, 31 A, 480 V, NEMA 1 enclosure

Overview

The ABB ACH550-UH-031A-4 is a robust and energy-efficient variable frequency drive (VFD) engineered for HVAC applications. Delivering 20 HP power with a 480 V input and 31 A output, this drive provides precise motor control for fans, pumps, and air handling systems.

Key Features

• Motor Power: 15 kW (20 HP)

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

• Output Current: 31 A

• Frequency Range: 0 to 500 Hz

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

• Overload Capacity: 110% for 60 seconds (light duty)

• EMC Filter: Integrated (C2 compliant)

• Safety Function: Safe Torque Off (STO)

• Communication: Built-in Modbus RTU, BACnet MS/TP, N2

• User Interface: HVAC-specific control panel with LCD

• Enclosure: NEMA 1 (UL Type 1)

• Cooling Method: Forced air cooling

Technical Specifications

• Model Number: ACH550-UH-031A-4

• Input Frequency: 50/60 Hz

• Analog Inputs: 2

• Digital Inputs: 6

• Analog Outputs: 2

• Relay Outputs: 3

• Operating Temperature: -10°C to +40°C

• Dimensions (H x W x D): 610 mm x 203 mm x 229 mm

• Weight: Approx. 14.1 kg

• Certifications: UL, cUL, CE

Applications

• HVAC control in commercial buildings

• Fans, pumps, and VAV systems

• Energy-saving motor operation in automation

• Building management systems integration

Product Description

The ABB ACH550-UH-031A-4 VFD is tailored for HVAC needs, offering dependable performance and intelligent control. It simplifies setup, supports multiple communication protocols, and optimizes energy use while extending motor life.

Why Choose ABB ACH550-UH-031A-4?

• 20 HP drive built for HVAC precision

• Seamless installation with built-in BACnet and Modbus

• Durable NEMA 1 design for indoor applications

• ABB’s industry-leading reliability and efficiency

Order Now

In stock and ready for fast global delivery.

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