Vacuum Interrupters, Inc. stocks a replacement for the ITT Jennings / Allis-Chalmers RP-728B vacuum interrupter for use in Siemens / Allis-Chalmers FCV-750 vacuum circuit breakers. The RP-728B is a component in the Siemens-Allis vacuum tube assembly numbers 18-393-620-503 and 18-393-620-504.*
Our RVI-RP-728B vacuum interrupter is rated 2000Amps, 15kV, 28kA, the same as the original RP-728B vacuum interrupter.
* All manufacturers names, trademarks and part numbers are used for reference purposes only. Vacuum Interrupters Inc. is not an authorized distributor or representative for the listed manufacturers. Designated trademarks, brand names and brands appearing herein are the property of their respective owners.