The WS, WY and WF series are metal shell connectors, they are a big family, these three series have the same insert, same contacts, and same electric spec, just different shell and different IP rating.
WS series is an economical indoor connector, no IP rating, not for outdoor，not waterproof, threaded coupling, it is a very strong connector, designed for indoor conditions only.
The connectors can be used for both cable to cable (in-line) and cable to panel-mount connections. Each side can be male or female contact, (Plug or socket versions).
1) shell diameter (the panel hole cutout size) : from 16mm to 55mm .
2) number of contacts : 2pin to 61pin
3) rated current: 5A-200A
4) IP rating : for indoor only
5) CE , ROHS approval