The AFP4SGD is a filler plate kit from the Eaton Spectra Series panelboard line, rated for 600 A and built in the AF family/style. It's a renewal part — the kit includes the filler plate and the mounting hardware only, no breaker frame. It's designed for bolt-on Spectra panelboards that accept SGH, SGL, or SGP breaker frames, dual-mounted, 2- and 3-pole configurations. If you're filling an unused opening in a Spectra panelboard to maintain dead-front integrity, this is the kit that matches the 600 A bus stack.
What the 600 A rating means for fit
The 600 A rating on this filler plate kit matches the bus capacity of the panelboard section it's designed to fill. It's not a current-carrying part — the filler plate itself doesn't conduct — but the rating tells you which bus stack ampacity the kit is sized for. If your Spectra panelboard is a 600 A vertical section, this is the correct filler plate. If your section is 400 A or 800 A, you need the kit rated for that bus. The AF family/style further narrows compatibility to the AF frame series within the Spectra line.