A200-D90 Rectifier Nissei
Technical Specifications

• Manufacturer: NISSEI CORPORATION
• Input Voltage: AC 200V / 220V (or AC 100V / 110V depending on wiring configuration) at 50/60Hz
• Output Voltage: DC 90V (or DC 45V) 
• Allowable Input Range: AC 200V to 220V for standard A200-D90 (compared to AC 200V to 230V for the A-200-D90-UL variant) 

Applications & Usage

• Used as a servo brake rectifier or motor brake power supply in industrial automation
• Commonly utilized with specific small-capacity motor series (such as MINI series brakes ranging from 15W to 90W), where input voltage must not exceed AC 220V. 
• Available from industral automation parts suppliers and online marketplaces like and specialized distributors like 

If you'd like, let me know:

• Are you looking to replace or troubleshoot a faulty unit?
• Do you need help with the wiring diagram or pin configuration?