Allen-Bradley 440P-MARB04B Limit Switch

The Allen-Bradley 440P-MARB04B (440P-MARB04B) is a limit switch designed for industrial automation, position sensing, and machinery monitoring applications. Operating as a critical component in automated production lines, material handling systems, and assembly machinery, this device detects the presence, passage, or end-of-travel position of moving mechanical parts and tooling. The unit interfaces directly with programmable logic controllers, input modules, safety circuits, and control relays to communicate position status and trigger control sequences or protective stops. Built for demanding factory environments, it features robust housing construction to withstand industrial operating conditions, mechanical shock, and vibration. With a recorded weight of 10 kg, this component delivers stable mounting and dependable switching performance in heavy-duty machinery. Typical applications include conveyor travel limits, door and gate position verification, machine tool axis monitoring, packaging equipment, and general manufacturing processes where reliable physical position feedback is essential for operational sequence control and machine protection.