Allen-Bradley 100-B300ND3 Non-Reversing Contactor

Allen-Bradley 100-B300ND3 Non-Reversing Contactor is a heavy-duty, three-pole, three-phase motor-controlling device from the 100-B family designed to switch large inductive loads in industrial control panels. This Mfr part 100-B300ND3, a non-reversing variant in Series B, is rated for up to 600 VAC line voltage at 60 Hz and carries a full-load current rating of 304 A (inductive), making it suitable for starting and stopping sizable three‑phase motors or similar high‑current loads. The coil is listed for 110/120 VAC control circuits, aligning with common US industrial control logic and enabling straightforward integration with standard control circuits; the 100-B designation identifies its mounting footprint and catalog family within Allen‑Bradley’s legacy line. Retail listings note that this specific model is discontinued, reflecting shifts in the catalog and the availability of newer or alternative contactor options.