For part number 708-PXP4012/02S-ND , the mating connectors are in this link , the suffix calls out different cable diameters that will work with them , check linked data sheet below they come with the back shells . Circular Connector Housings | Connectors, Interconnects | DigiKey
Contacts for these are 708-1087-ND for the male pins and 708-1086-ND for the sockets these are 20 to 24 AWG , Insertion and extraction tool is 708-1102-ND , positioner is 708-2072-ND for the crimp tool 708-1103-ND O-Ring and washer packs are here , Circular Connector Accessories | Connectors, Interconnects | DigiKey
Sealing cap for the PXP4012 is 708-2064-ND , sealing cap for the PXP4010 is 708-2062-ND
Ratings are listed on the data sheet , per the data sheet it shows Power ratings up to 13A, 600V
Datasheet 4000_series_power.pdf