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What Generator Interlock Kit is available for use with QO Single Phase ONLY, Main Breaker Load Centers(or Convertible Main Lug load centers that get converted to MB with a QOM1 or QOM2 main breaker)?

Published date: 04 June 2020

Issue:  
Product Design Features

Product Line:  
Load Centers

Environment:  
QO Load Centers

Cause:
Generator Interlock Kits 

Resolution:
The selection of the correct Generator Interlock Kit is dependent upon the Series Number of the QO load center. Any other series not listed below does not have a generator interlock kit available. 

1) Kit part number QOCRBGK1C is compatible for use with any Series G and S, NEMA Type 1 (indoor) and Series G, S1, S2 and S6 NEMA Type 3R (outdoor), single phase, convertible QO main breaker load center that utilizes a QOM1 frame main circuit breaker (100 - 125 amp MAX.). It interlocks the QOM1, 2-pole main circuit breaker with a QO, 2-pole (15-125 amp MAX) branch circuit breaker. The branch breaker used as the
back-fed generator breaker, cannot exceed the amperage of the main breaker. Kit includes a retaining kit for the QO branch breaker used as the back-fed breaker for the generator.
NOTE: Series G and S, convertible Main Lug Only load centers, that meets the description provided above, could also be used by converting the load center to a Main Breaker device using the QOM1 Main Breaker.

2) Kit part number QOCGK2C is compatible for use with any Series G and S, NEMA Type 1 (indoor) and Series G and S1, NEMA Type 3R (outdoor), single phase, convertible QO main breaker load center that utilizes a QOM2 frame main circuit breaker (150 - 225 amp MAX.). It interlocks the QOM2, 2-pole main circuit breaker with a QO 2-pole (15-125 amp MAX.) branch circuit breaker. The branch breaker used as the back-fed generator breaker cannot exceed 125 Amp Max. Kit includes a retaining kit for the QO branch breaker used as the back-fed breaker for the generator.
NOTES: a) Series S, convertible Main Lug Only load centers, that meets the description provided above, could also be used by converting the load center to a Main Breaker device using the QOM2 Main Breaker.
              b) Not applicable for the QO160M200P or QO160M200PC. A generator interlock kit is NOT available for the 60 space QO load centers. 

3) Kit part number QORBGK2C is compatible for use with any Series S2 and S6, NEMA Type 3R (outdoor), single phase, convertible QO main breaker load center that utilizes a QOM2 frame main circuit breaker
(150 - 225 amp MAX.). It interlocks the QOM2, 2-pole main circuit breaker with a QO, 2-pole (15-125 amp MAX.) branch circuit breaker. The branch breaker used as the back-fed generator breaker cannot exceed 125 Amp MAX.  Kit includes a retaining kit for the QO branch breaker used as the back-fed breaker for the generator.
NOTE: Series S2 and S6, convertible Main Lug Only load centers, that meets the description provided above, could also be used by converting the load center to a Main Breaker device using the QOM2 Main breaker.



Table. Summary of QO Load Centers Generator Kit part number
 

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