What does suffix 1388 indicate on a circuit breaker?

Issue:
Is there a suffix for a combination of the 277 - 480V shunt trip  and 1A1B auxiliary switch for the legacy line of breakers?
What is the suffix for a 1037 shunt trip (277-480 V) and a 1212 (1a1b) auxiliary switch for the FA KA LA MA breaker line?

Product Line:
Circuit Breakers

Resolution:
1388 indicates a 1A1B auxiliary switch and a 277-480 Vac shunt trip.

Released for:Schneider Electric USA