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Square D NQSFB4Q is a breaker kit intended for dual Q frame systems. This kit supports 400 Amp applications and is suitable for use in NQ Panelboards. It features modular construction to accommodate field-installable accessories. This product is recognized and certified by UL and CSA.
Designed for reliability and performance, facilitating quick installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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