The explosion-proof ball should belong to Category 9 0914 electrical equipment and control devices:

1. Electric device for remote control railway switches 090022, electronic ignition device for remote ignition 090030, thermal Adjustment device 090116, electrical equipment for industrial remote control operation 090130, electric adjustment device 090150, power device for rectification 090163? High-voltage explosion-proof power distribution device C090108, power station automation device C090109;

2. Lightning rod 090381, lightning arrester 090381.