SR AL41AN3 Pizzato Magnetic safety sensor

Why Choose the Pizzato SR AL41AN3 Magnetic Safety Sensor?

The Pizzato SR AL41AN3 is a compact coded magnetic safety sensor designed for reliable non-contact monitoring of guards, doors and protective covers on industrial machinery. Part of the Pizzato SR-A Series, it combines coded magnetic actuation with Reed-contact switching for dependable machine guarding and safety interlocking applications.

The SR AL41AN3 provides a 2NC + 1NO contact configuration with the protective guard closed. Its non-contact magnetic operating principle enables guard position monitoring without mechanical engagement between the sensor and actuator, helping minimise mechanical wear in applications where guards are opened and closed frequently.

This configuration features a left-hand connection and an integrated 3 m PVC cable with 6 × 0.25 mm² conductors. The sensor has a durable technopolymer housing with IP67 / IP69K protection and is supplied without an actuator, allowing the appropriate compatible Pizzato coded magnetic actuator to be selected separately.

Key Advantages

• Reliable coded magnetic non-contact guard monitoring.
• 2NC + 1NO contacts with the protective guard closed.
• Integrated 3 m PVC cable for straightforward machine installation.
• 6 × 0.25 mm² conductors support the three-contact configuration.
• Left-hand cable exit suits installations requiring wiring from the left side.
• IP67 / IP69K protection for demanding industrial environments.
• Non-contact operation helps minimise mechanical wear during repeated guard movements.

Key Features

• Pizzato SR-A Series coded magnetic safety sensor.
• Coded magnetic, non-contact detection principle.
• 2NC + 1NO contact configuration with guard closed.
• Reed-contact switching technology.
• 3 m PVC connection cable.
• 6 × 0.25 mm² cable conductors.
• Left-hand electrical connection.
• Compact block-form housing.
• Robust technopolymer construction.
• IP67 / IP69K environmental protection.
• No integrated status indicator.
• Sensor supplied without actuator.
• Suitable for safety-related machine guard monitoring.

Reliable Non-Contact Guard Monitoring

The SR AL41AN3 uses coded magnetic detection to monitor movable machine guards without requiring physical engagement between the sensor and actuator. When the appropriate coded actuator is positioned within the operating zone, the Reed contacts change state so that the condition of the protective guard can be evaluated by compatible machine safety control equipment.

The non-contact design helps minimise mechanical wear and is particularly useful for frequently operated guards or installations exposed to contamination. When correctly integrated with appropriate safety equipment, SR-A sensors can form part of safety systems achieving up to PL e and SIL 3, subject to the architecture and validation of the complete safety function.

Typical Applications

• Industrial machine safety guards.
• Hinged and sliding safety doors.
• Protective covers and removable access panels.
• Packaging and processing machinery.
• Automated assembly and production equipment.
• Material handling and manufacturing systems.