Universal Remote Control MX-880Z - SPECS SHEET Informations techniques Page 7

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Masterpact™ NT and NW Universal Power Circuit Breakers
Masterpact™ Circuit Breakers
7
05/2014
© 2000–2014 Schneider Electric
All Rights Reserved
Reduced Maintenance: Under normal operating conditions, the circuit
breaker does not require maintenance. However, if maintenance or inspection
is necessary, the arc chambers are easily removed so you may visually
inspect the contacts and wear indicator groove (see the figure below for how
wear is indicated). The operation counter can also indicate when inspections
and possible maintenance should be done. The life of the circuit breaker may
be extended by replacing the arc chamber and spring-charging motor and/or
replacing the main contact assembly of ANSI Certified circuit breakers.
Figure 4: Contact Wear Indicators
Arc Chamber
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