ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cables H01B7/10; electrolytic self-interrupters H01G9/18; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K17/00)

Description

H01H covers electric switches, relays, selectors, and emergency protective devices—the fundamental electromechanical and electromagnetic components used to control, interrupt, or route electrical circuits. This subclass includes mechanical switches (push-button, toggle, rotary), electromagnetic relays, contactors, solenoid-operated devices, and circuit protection equipment such as thermal and magnetic overload devices. Applications span industrial control systems, household appliances, automotive electrical systems, and power distribution networks. Related switching technologies implemented in semiconductor form (transistors, diodes) are classified separately under H01L.

68 direct subcodes

Child Classifications

Navigate with arrow keys, Enter to open

H01H 1/00 Contacts (liquid contacts H01H29/04)
H01H 11/00 Apparatus or processes specially adapted for the manufacture of electric switches (processes specially adapted for manufacture of rectilinearly movable switches having a plurality of operating members associated with different sets of contacts, e.g. keyboards, H01H13/88)
H01H 13/00 Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch (wherein the operating part is flexible H01H17/00)
H01H 15/00 Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
H01H 17/00 Switches having flexible operating part adapted only for pulling, e.g. cord, chain
H01H 19/00 Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
H01H 21/00 Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand (tumbler or rocker switches H01H23/00; switches having an operating part movable angularly in more than one plane H01H25/04)
H01H 2201/00 Contacts
H01H 2203/00 Form of contacts
H01H 2205/00 Movable contacts
H01H 2207/00 Connections
H01H 2209/00 Layers
H01H 2211/00 Spacers
H01H 2213/00 Venting
H01H 2215/00 Tactile feedback
H01H 2217/00 Facilitation of operation; Human engineering
H01H 2219/00 Legends
H01H 2221/00 Actuators
H01H 2223/00 Casings
H01H 2225/00 Switch site location