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What is the difference between the LI and the LC circuit breakers?

What do the C and I indicate in LC and LI circuit breakers?

Product Line:
Circuit Breakers

The difference between these two breakers is the interrupting rating. The LC breaker is the lower of the two, with a rating of 100K at 240V, 65K at 480V, and 35K at 600V. The LI breaker has a rating of 200K at 240V and 480V, and 100K at 600V.
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