Round magnet, diameter 10 mm, part of the magnet/magnetic-sensor pair used in the safety interlock systems of food processing machines (slicers, meat grinders and similar). The magnet is fixed to the moving part of the machine (such as a guard or cover): when the guard is closed, the magnet stays close to its matching magnetic sensor, keeping the circuit closed and allowing the motor to run; when the guard is opened or removed, the magnet moves away, the contact opens and the motor stops for safety.

• Shape: round
• Diameter: 10 mm

It should be replaced when it loses magnetic strength or is physically damaged, causing false machine stops or, worse, a failure of the safety interlock to trigger. It must be paired with a magnetic sensor compatible with the same machine.