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Suffix YA or YA1 on Powerpact Circuit Breakers

Issue:
What does the YA or YA1 suffix  on a Powerpact H, J or L Frame circuit breakers stand for?

Product Line:
Powerpact H, J, and L Frame Breakers

Environment:
Powerpact circuit breakers sold and supported in the United States

Cause:
Need to get a Marine or Naval Listing on a circuit breaker.
 
Resolution:
Circuit breakers can be ordered with the Marine SA listing by adding the suffix “YA” to the catalog number.
Circuit breakers can be ordered with the Naval SB listing by adding the suffix “YA1” (naval) to the catalog number.

UL Marine Listed/CSA Certified Circuit Breakers (UL 489 Supplement SA) - breaker catalog number suffix "YA"
-The PowerPact H- and J-frame circuit breakers with thermal-magnetic trip units with D, G, J and L interruption levels meet the UL 489 Supplement SA requirements for use on vessels of any length under or over 65 ft. (19.8 m).
-The PowerPact H-, J-, and L-frame circuit breakers with Micrologic electronic trip units meet the UL 489 Supplement SA for use on vessels over 65 ft. (19.8 m) in length.
Marine circuit breakers must not use aluminum or aluminum alloys for terminal connections and must be calibrated at an ambient temperature of 104° F (40° C).
Standard circuit breakers should not be specified or used in the place of marine rated circuit breakers.

UL Naval Listed/CSA Certified Circuit Breakers (UL 489 Supplement SB) - breaker catalog number suffix "YA1"
-The PowerPact H-, J-, and L-frame circuit breakers with Micrologic trip units with D, G, J and L interruption levels meet the UL 489 Supplement SB requirements for use on naval vessels.
These circuit breakers are subject to various vibration tests as described in UL 489 Supplement SB.
Naval circuit breakers must not use aluminum or aluminum alloys for terminal connections and must be calibrated at an ambient temperature of 122° F (50° C).
Standard circuit breakers should not be specified or used in the place of navel rated circuit breakers.

American Bureau of Shipping (ABS)
The PowerPact H-, J-, and L-Frame circuit breakers are certified to ABS-NVR (American Bureau of Shipping - Naval Vessel Rules), for use on Naval vessels.
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