R911200375 is part of the RZS Sinusoidal Filters Series by Indramat Drives.
Specs
Product Type: Frequency Converter Accessory Function: Reduce EMC interference Power Input: AC 500 V (+/- 10%) Frequency Range: 0 to 100 Hz Power Loss: 50 W Cooling Method: Ambient Air Mounting: Compact Size and Easy Installation.