The AF265N5-30-11-13: NEMA size 5 frames are typically panel-mounted on a backplate or DIN-rail adapter. The 100-2 rating means it handles motor loads up to 100 A in a two-pole configuration — sized for a 50–75 HP motor at 480 V, depending on duty class. Verify the coil voltage and auxiliary contact block (30-11 indicates one N.O. + one N.C. auxiliary) match your control circuit before wiring.
The description string "NEMA,SZ5,100-2" confirms the NEMA size and current rating. The alternate listing "NEMA SZ5 10" is a variant of the same order code — no functional difference.