ShortC as Don pointed out the info is required to be with the breaker.
T&B lists all the panels right on the side of the breaker.
If General Switch did not lable the breaker they would have had to send the info in the packaging.
The supply house that you bought the breaker at should supply the paper work or take the breaker back.
From the 2004 UL white book
CIRCUIT BREAKERS, MOLDED-CASE,
CLASSIFIED FOR USE IN SPECIFIED
The referenced publication is a compatibility list which tabulates the company name, catalog number, number of poles and electrical ratings of the Classified circuit breaker, in addition to the company name and catalog number of the applicable UL Listed panelboards, and corresponding UL Listed circuit breakers in place of which the Classified circuit breaker has been investigated.
of the compatibility list is provided with each circuit breaker.