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What are the restrictions to mounting QOB3110VH and larger branch breakers in a NQ panelboard?

Issue: What are the restrictions to mounting QOB3110VH and larger branch breakers in a NQ panelboard? Product Line: Panelboards. Environment: Products sold in the United States. Cause: Product features. Resolution: The QOB3110VH through QOB3150VH requires 6 vertical spaces and the largest branch breaker which can be mounted adjacent to (across from) it is 40A. CTA-ID : 2059853
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