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What does suffix 6339 indicate?

Published date: 08 June 2020

Issue:
What is circuit breaker suffix 6339?
What is circuit breaker suffix 8339?
What is circuit breaker suffix B339?

Product Line:
Circuit Breakers

Environment:
Applies to Legacy type LA and LAL molded case breakers and switches

Resolution:
A breaker or molded case switch with suffix 6339 indicates the device was made specially for an OEM with the following factory installed items:
  • 4A Auxiliary Contacts (suffix 1299)
  • 24 Vdc Undervoltage Release (suffix 1127)
  • Fungus Treatment (suffix FT)
  • Low Temperature Grease (suffix 1564)
  • Special Leads (specify length)
  • Not UL Listed
Because of how the breaker labels are printed, sometimes the suffix 6339 looks like 8339 or B339. The correct suffix is 6339.

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