IPC Subgroup
H01H 33/44 Devices for ensuring operation of the switch at a predetermined point in the AC cycle
Introduced: September 1968
Last revised: January 2006
Full Title
High-tension or heavy-current switches with arc-extinguishing or arc-preventing means > Details > Devices for ensuring operation of the switch at a predetermined point in the AC cycle
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC ELEMENTS
- Subclass:
- ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES