SQUARE D NQ442L2 Panelboard Interior 42 Spaces 225 A Aluminum QHB/QOB/QOB-VH
QHB; QOB;QOB-VH. Number of Spaces. Bus Material. CSA Approved; ULListed. 3TX84 for Main Lug; 3TX92 for MainBreaker. 3TX91 for Main Breaker; 4HHA1 for MainLug. Main Circuit Breaker Adapter Kit. NQ CircuitBreakers.