The PTB-12-3PS from Amphenol Industrial Operations is panel mount circular connector, through bulkhead receptacle (male pins / female sockets) with 3 position and shell size-insert 12-3. This is receptacle with bayonet lock fastening. The PTB-12-3PS has copper alloy contacts with gold finish, neoprene insert and aluminum shell with olive drab cadmium finish. Operating temperature range is from -55°C to 125°C.