The Square D AFP3SED is a filler plate kit for panel board enclosures, covering a width range of 27 to 44 inches. It mounts dual, meaning it can fill either side of a split-bus or dual-feed panel, and stacks three units high to match the breaker layout. This kit is specified for use with TEB, TED, THED, SEDA, SEHA, SELA, and SEPA breakers rated up to 150 A.
Deployment Context
The 44-inch width matches the standard NEMA panel board enclosure footprint, so the kit slides into the existing mounting channels without field modification. Dual-mount capability means it works in both main-lug and main-breaker configurations where the filler plate sits on either side of the bus stack.