This Eaton DH365FRK ,HEAVY-DUTY FUSIBLE SAFETY SWITCH, 400A /600V/3P/60hz is a sensor/switch manufactured by Eaton. 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. It is commonly in production lines requiring accurate detection or operator control.
