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What is the retaining kit required to secure a backfed, branch mounted QO 2-pole circuit breaker in a QO load center?

Issue:
Selection

Product Line:
QO Load Center Accessory

Environment:
Retaining kit selection

Cause:
Select correct accessory

Resolution:
If using a QO6-12L100F/S/DF/DS or RB, QO8-16L100F/S/DF/DS or RB, QO14-8L125GF/GF or GRB load center, use a PK2MB Retaining Kit.
If using a single-phase 100-125 ampere convertible main, Series S01, S02 or S03 load center, use a PK4MB2LA Retaining Kit.
If using a single-phase 150-225 ampere convertible main, Series S01, S02 or S03 load center, and the back-fed breaker is 125A , or less, use a PK4MB2HA Retaining Kit; if the back-fed breaker is 150A - 200A, use PK5RK Retaining Kit.
If using a three-phase QO load center, use a PK3MB Retaining Kit.

NOTE: IN ALL CASES, THE AMPERAGE OF THE BACK-FED BREAKER CANNOT EXCEED THE AMPERAGE RATING OF THE PANEL.
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