Industrial and multiphase power plugs and sockets - Wikipedia
Eaton Wiring 30 Amp Power Receptacle, 3-Phase, 3-Pole, Black (Eaton Wiring 8430N) | HomElectrical.com
3 Phase Plug, 4 Pin Power Plug 3 Phase Waterproof Concealed Mount Socket Connector Set 380V‑415V 16A 3P+E Electrical Connector - Amazon.com
10 HOW TO Connect the three phases CEE plug - YouTube
1Pc AC 440V 16A Three Phase Four Wire 3P 4W Industrial Socket Plug Green Rubber | eBay
IEC 60309 - Wikipedia
Pass and Seymour INDUSTRIAL Receptacle Power Outlet NEMA 15-30R 30A 3? 250V 5740 - Electric Plugs - Amazon.com
Legrand - Pass & Seymour Power Outlet with Straight Blade Receptacle with 250 Volts to Use as Heavy Duty Outlet, 5760, 1 Count - Electric Plugs - Amazon.com