This Square D D325N fusible safety disconnect safety switch 400A 3 pole 240V 4Wire 3P is a sensor/switch manufactured by Square D. It senses object presence, distance, or position (or switches an electrical circuit) and converts that into an output signal for machine control or monitoring. Key specifications noted on this listing include 400A, 3 Pole. It is commonly in production lines requiring accurate detection or operator control.
