Schneider Masterpact NW Breaker issue

[sibeen]

Something that I was notified about today and thought may be of interest to some on the forum. Haven't posted here for quite a while and had to go looking for my login details.

This is an excerpt from a notice that Schneider has sent out regarding Masterpact NW Circuit Breakers (3P, 4P, 6P, & 8P from 800 to 6300A) manufactured in the French factoryfrom August 18, 2016 to March 27, 2018, inclusive:

Schneider Electric has recently discovered a manufacturing issue that may have occurred on an internal circuit breaker component
during the subject dates in a Schneider Electric factory in France. This issue may affect the electrical protection capability of the
circuit breaker. The results of analysis performed by Schneider Electric conclude that if a subject circuit breaker has the internal
nonconformance, it is possible that all poles on the breaker may not open if the circuit breaker is called upon to interrupt current
(trip) or if the circuit breaker is manually switched to the off position. Should a pole/phase on a circuit breaker not open, a risk of
SERIOUS PERSONAL INJURY, DEATH AND/OR SUBSTANTIAL PROPERTY DAMAGE may exist.

 

[CircuitTester]

Schneider/Square D Recall Advisement attached.

 

[waross]

Thank you both for sharing this information.
Yours
Bill

Bill
--------------------
"Why not the best?"
Jimmy Carter

 

[krisys]

Is Schneider telling that you don't count on these breakers for clearing the faults or for protection.

Imagine few of these breakers are part of one circuit which has selectivity studied and the breaker settings are done. These circuits and the neighboring feeders are operating in risky condition.