Breaker Size Calculator

This tool will allow you calculate the breaker size that you need. The "3 Phase Output" is what your machine needs to run. The "Single Phase Input" is the power source you have, or need to have, available.

Single Phase Input
Your power source
Voltage:
Amps:
*Breaker:
3 Phase Output
Your machine's requirements
Voltage:
Amps:

*Breaker - This is the minimum sized breaker needed to run just your machine. It does not include the power required to run the phase converter.
A Digital Phase Converter requires almost no extra power but a Rotary Phase Converter needs to spin a generator and that does require some additional power.

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