GYM9 3P MCB Miniature Circuit Breaker Air Switch Circuit Protection 400VAC (32A) $ 40.38 GYM9 miniature circuit breaker is mainly used for protection against overload and short circuit under the AC 50Hz/60Hz, rated voltage 230V/400V and rated current 16/25/32A (optional). 22. It also can be used for non-frequent on-and-off switch operation under normal circumstance. 33. In compliance with IEC/EN60898-1. 44. With indicator function in the contact position. 55. Transparent cover designed to carry label.