ANSI 136.41 Twist lock 5PIN DALI 0-10V Dimming Receptacle NEMA base Power tap for Street Lighting Control
https://www.vogueparade.com/shopping/EN/530/1/1005002734980077/ansi-13641-twist-lock-5pin-dali-0-10v-dimming-receptacle-nema-base-power-tap-for-street-lighting-control//