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Can a QBL, QDL, QGL, or QJL circuit breaker be used to replace a Q2L, Q2L-H or Q2LH circuit breaker in an individually mounted Q2 enclosure?

Issue:
Breaker replacement

Product Line:
Q Frame breaker enclosures

Environment:
Frame of breaker

Cause:
Application or availability

Resolution:

Yes, the Q2 enclosures Q22200NS, Q22200NRB, Q23225NF, Q23225NS or Q23225NRB will accept the Q-frame circuit breakers. However, restrictions regarding the short circuit rating may apply. The enclosures marked for use with the QBL, QDL, QGL or QJL breakers are designated Series E05. For retrofitting these breakers into existing Series E01 or E03, or earlier, enclosures, restrictions regarding short circuit current ratings apply. The following statement is on the wiring diagram of the Series E01 and E03 enclosures: ``The short circuit rating of this enclosure is equal to the interrupting rating at the supply voltage marked on the circuit breaker installed, but not to exceed 42,000 RMS Symmetrical Amperes at 240Vac.`` ``Replacement circuit breakers must have an interrupting rating equal to or greater than that of the circuit breaker originally installed``.


CTA-ID : 2007435
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