R911338759 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Rexroth Indramat Product: Yes Safety Certification: Yes Housing Structure: Withstands interference of large solid material Cooling Method: Forced Cooling, Internal Fan Unit Firmware Module: Not included, can be ordered separately Max Input Current: 3 Amperes Main Connecting Voltage: 110 to 230 volts Control Panel: Yes, advanced design Accessory Standard: Must meet international standards Efficiency Loss: Yes, if used with substandard components