Neutrik NAC3MM-1 powerCON D shape adapter is NAC3MPA-1 (power in) male to powerCON NAC3MPB-1 (power out) male coupler for linking cables. Rated for 20 A rms current per contact, and 240 V AC voltage.
Neutrik powerCON is a locking 3 conductor equipment AC connector with contacts for line, neutral and pre-mating ground contact. It replaces appliance couplers wherever a very rugged solution in combination with a locking device is needed in order to guarantee a safe power connection. PowerCON is a connector without breaking capacity, i.e. the powerCON should not be connected or disconnected under load or live.