C091B Circular Connectors Amphenol-Tuchel C091B Circular Connectors are constructed with a plastic bayonet coupling, plastic backshell, and plastic locking ring. These connectors feature contact arrangements of 3 to 8, 12, and 14, internal strain relief, and IP40 protection when mated. The series is available straight or angled male and female cable connectors, and receptacles. The male and female receptacles can be used for front- and rear-panel mounting as well as PCB mounting. Applications for Amphenol-Tuchel C091B Circular Connectors include conveyors, automation, servo motors, and wireless infrastructure.