1 year warranty
The ABB ACH550-UH-031A-4 is a specialized variable frequency drive designed for heating, ventilation, and air conditioning applications. This three-phase AC drive delivers precise motor speed control for fans, pumps, and air handling systems in commercial and industrial HVAC installations. Operating at 480V with 31A output current and 20 HP power rating, it features integrated EMC filter compliance, NEMA 1/IP21 enclosure protection, and vector control technology for enhanced motor performance. The drive includes preprogrammed HVAC macros for quick commissioning, a multilingual graphical control panel with setup assistant, and supports multiple communication protocols including BACnet and Modbus. Built on ABB's R3 frame platform, it provides 110% overload capacity for one minute and includes advanced fault detection, thermal protection, and energy optimization features specifically tailored for HVAC duty cycles.
Item Details
- Brand Name: ABB
- Manufacturer: ABB
- Item Type Name: Variable Frequency Drive for HVAC
- Product Family / Series: ACH550
- Series: ACH550-UH
- Model Number: ACH550-UH-031A-4
- Product Id: 3AUA0000004054
- Frame Size: R3
- Enclosure Type: NEMA 1 / UL Type 1 / IP21
Product Specifications
- power_rating: 20 HP (15 kW)
- input_voltage: 380-480 V AC, 3-phase
- frequency: 50/60 Hz
- output_current_continuous: 31 A
- input_current: 31 A
- control_mode: Scalar (V/Hz) and Sensorless Vector Control
- overload_capacity: 110% for 1 minute, 130% for 2 seconds
- efficiency: Up to 97%
- switching_frequency: Adjustable PWM
- communication_protocols: BACnet, Modbus, RS485
- control_panel: HVAC graphical display panel with assistant
- emc_filter: Integrated EMC filter, Class C2
- fuse_rating_iec: 35 A (IEC269 gG)
- fuse_rating_ul: 40 A (UL Class T, Bussmann JJS-40)
- protection_features: Overcurrent, overvoltage, undervoltage, ground fault, thermal protection
Additional Details
- Certifications / Approvals: UL, cUL, CE
- Application: HVAC systems - fans, pumps, air handling units
- Mounting: Wall or panel mounted
- Operating Temperature: -10°C to +50°C
- Storage Temperature: -40°C to +70°C
- Altitude: Up to 1000 m without derating
- Relative Humidity: 5-95% non-condensing
Measurements
- Weight: 14.1 kg
- Dimensions: 375 x 250 x 460 mm (H x W x D)
All PLC Direct products come with a 1-year warranty. The warranty is issued by PLC Direct. Warranty coverage commences at the date of purchase. The warranty is for mechanical defects or failures not caused by human factors including but not limited to (a) incorrect installation, (b) operating the unit in sub-optimal conditions or in scenarios not recommended by the manufacturer, (c) poor unit maintenance, etc. The warranty does not cover programming or software related issues.
If the product is eligible for PLC Direct’s warranty coverage and the customer encounters an issue with the product, we will request the item is shipped to us for diagnosis and examination. Regardless of the cause of product issues, the customer will bear responsibility for the cost of shipping the unit to PLC Direct for evaluation. Where the unit was damaged by human factors, we will offer a repair or replace quote; in cases where damage was caused by human factors, the customer is responsible for the cost of shipping the repaired/replaced unit from PLC Direct to the customer. Where the unit was not damaged by human factors but is covered by PLC Direct’s warranty, we will repair or replace the unit at our cost (or, in rare cases, refund you your purchase); in such cases, PLC Direct will bear the cost of shipping the repaired or replaced product back to the customer. It is up to PLC Direct’s discretion whether to repair, replace, or refund the customer in such cases. Diagnoses can take time to complete based on technician availability and the complexity of diagnosis.
In no event shall PLC Direct be liable for any damages except actual damages up to, but not exceeding, the amount paid to us for the product, including we shall not be liable for any consequential or indirect damages or lost profits whether or not advised of same.
PLC Direct offers free shipping worldwide. Product ship from a various warehouses worldwide based on the customer's and the product's location. The estimated delivery date on the product page is PLC Direct's best estimated assuming a US-based shipping destination.
Regardless of where the product is shipping from, PLC Direct covers all duties for US-based shipping destinations. For non-US-based shipping destinations, customers are responsible for duties as appropriate.
PLC Direct's focus is on balancing price with lead time. Some but not all products can be expedited. If you have questions about delivery ETAs, please contact our team.
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