Busbar Sizing Calculator

Engineer robust busbar sizes for any load scenario. Apply derating, parallel bars, and length effects. Export results to share with teams and clients fast.

Inputs
Enter your load and installation conditions. Use optional fault duty for a thermal withstand check.
Continuous RMS current for the run.
Copper carries more current per area.
Cooling strongly affects allowable density.
Typical reference is 30°C.
Defines allowable temperature rise.
Increase when width becomes impractical.