Collection: PowerFit 400A
PowerFit 400A is KUPO Power's keyed single-pole 400A connector for European and UK power distribution. Built around three differentiators: lead times that beat typical European supply chains, competitive 400A pricing, and OEM-flex specification. KUPO works directly with OEMs and integrators to customize PowerFit for specific installations. Mechanical keying on every phase physically prevents cross-phasing accidents at the panel and at the cable end. Compatible with industry-standard Powerlock® systems for migration of existing infrastructure.
Phase identification (IEC 60446 European color code)
| Phase |
IEC 60446 Color |
Function |
| Phase A (L1) |
Brown |
First live phase |
| Phase B (L2) |
Black |
Second live phase |
| Phase C (L3) |
Grey |
Third live phase |
| Neutral (N) |
Blue |
Return / neutral conductor |
| Ground / Earth (PE) |
Green / Yellow |
Protective earth |
Source and Drain mating
PowerFit uses the keyed single-pole convention where Source connectors carry power from a generator or substation, and Drain connectors deliver power into distribution equipment. Sources only mate with Drains, never two Sources or two Drains together. The keying physically prevents misconnections that could damage equipment or cause hazards on energized circuits.
Browse by phase: Phase A (L1) · Phase B (L2) · Phase C (L3) · Neutral · Ground / Earth  | By form factor: Line Source · Line Drain · Panel Mount Source · Panel Mount Drain
Read the full PowerFit 400A guide →
