R911403738 is part of the HCS Compact Converters / Drive Controllers Series by Indramat Drives.
Specs
Design: Rexroth Indramat Housing Unit: High degree of protection Noise Level: Low Compatibility: Requires compatibility test with new materials Installation: Direct mount into control cabinet (G1 design) Switching Frequencies: 4, 8, 12, 16 kilohertz Maximum Operational Altitude: 1000 meters above sea level