HVAC Packaged Drive with Bypass and Disconnect
The ABB 3AUD0000003885 is an HVAC packaged drive integrating an ACH580 variable-speed drive with an e-clipse bypass and a disconnect switch in a single enclosure. It is UL-listed for light-overload use at 250 Hp and 302 A output current on a 460 V supply, making it a drop-in solution for commercial building fan and pump applications where code requires a bypass for manual operation during drive service. The drive operates on a 440 to 480 V three-phase input at 50/60 Hz, matching standard North American 460 V distribution. The R9 frame size houses the power stage and bypass contactor in a NEMA Type 1 enclosure rated IP21 — suitable for indoor installation in mechanical rooms or equipment closets where drips and falling dirt are the main environmental concerns.