This part of ISO 461 specifies the dimensions for the following connectors used to supply electrical power from a ground source to an aircraft:
Style 1A — 28 V d.c., aircraft fixed connector
Style 1B — 28 V d.c., ground supply free connector
Style 2A — 112 V d.c., aircraft fixed connector
Style 2B — 112 V d.c., ground supply free connector
Style 3A — 200 V a.c., 400 Hz, 3-phase aircraft fixed connector
Style 3B — 200 V a.c., 400 Hz, 3-phase ground supply free connector
NOTE — ISO 461/1 specifies the design, performance and test requirements for the connectors.