NS D4AZ1SA3 Pizzato NS series safety locking switch

Why Choose the Pizzato NSD4AZ1SA3 Safety Locking Switch?

The Pizzato NSD4AZ1SA3 is a robust RFID safety interlock switch with electromagnetic guard locking designed for monitoring and securing movable guards on industrial machinery. Part of the Pizzato NS Safety Locking Switch series, it combines contactless RFID guard detection, monitored locking and electronic safety outputs in a compact solution for machine guarding and safety circuits.

This NS series configuration uses operating principle D, in which the actuator is locked when the electromagnet is de-energised. Mode 1 operation provides safety outputs that become active when the compatible actuator is inserted and the guard is correctly locked, helping the machine safety system verify a secure guard condition before hazardous functions are enabled.

The NSD4AZ1SA3 features a maximum 2,100 N holding force, a durable technopolymer housing and IP67 / IP69K protection. Electrical connection is provided by a pre-wired 3 m PVC cable with 12 × 0.14 mm² conductors, while a front screwdriver-operated auxiliary release provides a practical means of manually releasing the locking mechanism when required.

Key Advantages

• Combines RFID guard monitoring and electromagnetic guard locking in one safety device.
• Principle D locking retains the actuator while the electromagnet is de-energised.
• Maximum 2,100 N holding force provides secure machine-guard retention.
• Dual safety inputs and outputs support integration into advanced machine safety circuits.
• Pre-wired 3 m PVC cable simplifies electrical installation.
• Front screwdriver-operated auxiliary release supports maintenance and controlled manual unlocking.
• IP67 / IP69K protection supports dependable use in demanding industrial environments.

Key Features

• Pizzato NS Safety Locking Switch series.
• RFID safety interlock switch with electromagnetic guard locking.
• Contactless RFID actuator detection.
• Operating principle D: actuator locked with electromagnet de-energised.
• Mode 1: OS safety outputs active with the guard locked.
• 2,100 N maximum holding force.
• Two safety inputs: IS1 and IS2.
• Two safety outputs: OS1 and OS2.
• O3 signalling output for actuator-inserted status.
• O4 signalling output for actuator-locked status.
• Two electromagnet activation inputs: IE1 and IE2.
• I3 programming / reset input.
• 3 m PVC cable with 12 × 0.14 mm² conductors.
• Front screwdriver-operated auxiliary release.
• Robust technopolymer housing with IP67 / IP69K protection.

Reliable RFID Guard Locking for Industrial Machinery

Safety interlock switches with guard locking are used on machinery where a movable guard must remain secured until hazardous operating conditions have ceased. The Pizzato NSD4AZ1SA3 combines RFID-based actuator detection with monitored electromagnetic locking, allowing a safety control system to determine whether the guard is correctly positioned and securely locked.

The redundant IS1–IS2 safety inputs and OS1–OS2 safety outputs facilitate integration into electronic machinery safety architectures, while dedicated O3 and O4 signalling outputs provide information about actuator insertion and locking status. The pre-wired cable arrangement is particularly convenient for installations where a fixed cable connection is preferred over a detachable connector.

Typical Applications

• Industrial machine guard doors and access panels.
• Robotic cells and automated manufacturing systems.
• Packaging and processing machinery.
• Machines with hazardous residual or run-down movement.
• Automated assembly and production lines.
• Conveyor and material handling equipment.
• OEM machinery and integrated industrial safety systems.