Pressure switch for Demag AC80-1

The pressure switch, part number 551 419 40, serves as a monitoring component within the control systems of the Demag AC80-1 crane. It detects fluid pressure levels, such as hydraulic oil or air, and transmits an electrical signal once the pressure reaches a pre-set limit. This signal is used to trigger various responses, including the activation or deactivation of pumps, valves, warning indicators, or safety systems. By maintaining these operational parameters, the component helps manage the status of the crane's hydraulic circuits.

This unit is compatible with the Demag AC80-1 model. It is engineered to monitor circuits related to lifting, steering, braking, or outrigger functions, ensuring the system remains within defined pressure ranges. The component helps identify abnormal pressure conditions that may occur during operation.

Pressure switches function by closing or opening an electrical circuit based on the physical pressure exerted on an internal diaphragm or piston. In heavy machinery, these switches are integrated into hydraulic and pneumatic lines to provide feedback to the operator or the machine control unit. They allow for automated system protection by detecting overpressure or pressure drops, which supports the overall management of the machine hydraulic architecture.