R911378128 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Rate Current: 54 Amps Power Section Rating: 200 to 500 Volts AC Control Panel Requirement: Connection before power on Control Panel Upgrade Option: Advanced control panel Firmware: Ordered separately Mounting Distance Guidelines: Should be observed Mounting Style: Back-side (standard) Rating: IP20 Heat Dissipation: Warm air inside the cabinet