| Depth | 9.1 " |
| Width | 8 " |
| Height | 23 " |
| Mounting | Wall |
| IP Rating | IP21 |
| Frame Size | R3 |
| Net Weight | 35 lbs |
| Input Phase | 3 |
| Item Number | ACH550-UH-031A-4 |
| NEMA Rating | NEMA 1 |
| Braking Type | Flux Braking |
| Gross Weight | 55 lbs |
| Manufacturer | ABB |
| Family Series | ABB HVAC Drives |
| Operator Controls | Keypad Included |
| Input Range Voltage (AC) | 380-480 VAC |
| Manufacturer Part Number | ACH550-UH-031A-4 |
| Nominal Input Voltage (AC) | 480 VAC |
| HP (Variable Torque Rating) | 20 hp |
| Amps (Variable Torque Rating) | 31 A |
Does the ABB ACH550-UH-031A-4 come with a warranty?
Yes. The ACH550-UH-031A-4 is backed by our 24-Month Replace Industrial Warranty, with no rush fees or hidden warranty charges. If a unit fails under normal use within the warranty period, we repair or replace it.
Is this ACH550-UH-031A-4 a genuine ABB part?
The ACH550-UH-031A-4 is sourced and verified independently. Replace Industrial is not an authorized distributor, affiliate, or representative of ABB, and all warranties are provided directly by Replace Industrial.
Is the ABB ACH550-UH-031A-4 new or used?
We offer the ACH550-UH-031A-4 in multiple conditions, from unused surplus to professionally reconditioned units. Every option is sourced and verified independently and covered by our 2-year replacement warranty.
What are the key ratings of the ACH550-UH-031A-4?
The ACH550-UH-031A-4 carries IP21 protection and runs on 480 VAC.
What is the ABB ACH550-UH-031A-4?
The ACH550-UH-031A-4 is part of the ABB ACH550 line.
ACH550-UH-031A-4
The ACH550-UH-031A-4 is an ABB HVAC Drive optimized for climate control systems. With an input voltage of 480 VAC, it boasts a 20 hp variable torque rating and 31 A output. This wall-mountable unit, suited for indoor use with a NEMA 1 rating, features a built-in keypad, flux braking, and measures 23" in height.
All products are covered by our 2-Year (24-Month) Replace Industrial Warranty. If a unit is found defective under normal use within the warranty period, we repair or replace it at no additional cost, and a unit may be returned for a full refund within 30 days if returned in the same condition it was sent.
Replace Industrial is an independent distributor and does not convey the manufacturer's warranty; all warranties are provided by Replace Industrial alone. Read the full warranty policy
We repair a wide range of industrial automation equipment, including PLCs, HMIs, drives, servo motors, switches, and circuit breakers, with rush service for critical downtime. Request a quote, ship your unit, and we diagnose, repair, and return it. Request a repair quote
Our standard shipping method is UPS Ground. We can also ship on your FEDEX or DHL account.
We can ship many items our the same day via Overnight or 2 Day Shipping.
We currently only collect tax from customers in the state of North Carolina. If you are exempt on your purchase, please email your Sales Tax & Use Exemption Form to sales@replacenc.com.
If you are checking out via a quote we send you, there is an option to upload your form at the time of purchase.
If you have already placed an order, please send us your form and we can refund the charged taxes.







