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ABB RB4C-355/170 3AXD50000006934 is a 400 mm IP54 cabinet cooling fan identified by ABB product ID 3AXD50000006934 for compatible ACS880 drive cabinets.
RB4C-355/170 3AXD50000006934 operates from a 230 V AC, 50/60 Hz auxiliary supply. ABB documentation specifies one fan for a 400 mm IP54 cabinet and two fans for an 800 mm IP54 cabinet.
RB4C-355/170 3AXD50000006934 must be matched with the documented fan capacitor MSB MKP 6/603/E1679, ABB order code 3AXD50000006959, and the specified seven-position connector set before the drive is returned to service.
The ABB RB4C-355/170 is an axial cabinet cooling fan used with compatible ACS880 industrial-drive enclosures. Its 400 mm construction and IP54 application are specified for drive cabinets that require controlled forced-air cooling.
ABB lists a 230 V AC, 50/60 Hz supply and distinguishes the required quantity by enclosure width: one fan for a 400 mm cabinet and two fans for an 800 mm cabinet. Service work must also retain the documented capacitor and seven-position plug/receptacle hardware.
ABB identifies the fan by its exact model and order code; match the auxiliary supply, protection class and cabinet airflow requirement.
Cabinet width determines the number of fan assemblies. Confirm the 400 mm or 800 mm IP54 configuration before ordering.
Isolate the drive and allow the DC link to discharge, then verify fan rotation, capacitor, connectors, protective earth and unobstructed airflow before commissioning.