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PowerpactH J L Breakers
Yes,, the catalog number for the 80% rated breaker has “T” in the 9th character space.
The catalog number for a 100% rated breaker uses “R” in the 9th character place. For example, HDL36015T or HDL36015R or LGL36400TU31X or LGL36400RU31X).
100% rated H- and J-frame circuit breakers have copper lugs and can only be used with copper wire.
More information on field-interchangeable trip units in the Powerpact H, J, and L Frame breakers can be in the 2012 Supplemental Digest