Used ABB ACH550 HVAC variable frequency drive, model ACH550-01-072A-4+B055, removed in good working condition. This 37 kW, 72 A IP54 / UL Type 12 unit is designed for 3-phase 380–480 V HVAC fan and pump applications.
Brand: ABB
Model: ACH550-01-072A-4+B055 (label shows ACH550-01-072A-4+B055, 3~ 380–480 V, 72 A, 48–63 Hz input).
Type: HVAC AC drive / variable frequency drive (VFD) for fans and pumps.
Power rating: 37 kW (50 HP) output, nominal current 72 A.
Input: 3-phase 380–480 V AC, 48–63 Hz.
Output: 3-phase, 0–U1 V, 0–500 Hz (see label/photos for full specs).
Enclosure: IP54, UL Type 12 / NEMA 12 – suitable for dusty industrial/HVAC environments.
Series: ACH550 HVAC drive series.
Motor rating on label: 37 kW.
Compliance/marks on label: CE, UL, RoHS (see photos for exact markings).
Country/Region of manufacture: Made in Finland (per rating label).
Used, in good working condition when removed from service.
Visible cosmetic wear from use: dust, surface dirt, fingerprints and scuffs on housing and keypad cover (see photos).
Cooling fan and interior surfaces show dust from previous installation; no obvious broken plastic seen in photos.
No original box or documentation included; drive will be supplied as shown in the pictures.
Display/keypad and enclosure door present; cables and external accessories not included.
Pulled from a working HVAC installation during an upgrade; not tested by me after removal, but described as functioning when decommissioned.
Buyer should review all photos and the nameplate label to confirm suitability and full technical data before purchase.
Professional installation by qualified personnel is strongly recommended for safe operation and correct parameter setup.
