PCE MERZ Power Distribution Board – 125 Amp 415V Three Phase to 2 x 63A 415V Three Phase Sockets. Stackable box design made with. Durable construction with clear window for access to circuit breakers. Compact event power distro with MCB protection. Made in the UK, these. Heavy duty power distribution units are suitable for all industrial machinery, engineering, welding, event, marquee, catering, commercial, site power, workshop, and power distribution applications. We stock a comprehensive range of power distribution units with dozens of input and output configurations, including 400V three phase and 230V single phase, and 125A, 63A, 32A, 16A, and 13A connectors. Input: 125A 400V 5 Pin 3P+N+E Inlet. 2 x 63A 400V 5 Pin 3P+N+E Sockets. 2 x 63A 4-Pole Type C MCBs (one per 63A 400V output).