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What is the difference between a thermal/magnetic and a mag only breaker?

What is the different between a thermal/mag breaker and a mag only motor circuit protector?

Product Line:
Molded Case Circuit Breakers

The thermal/mag has both thermal (for overload trip) and magnetic (for inrush/instantaneous trip) elements. This is used primarily for conductor protection. The mag only is mainly used for motor protection.
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