Why Choose the Pizzato NSD4SR1SMK-F41 Safety Interlock Switch?
The Pizzato NSD4SR1SMK-F41 is a high-integrity RFID safety interlock switch with solenoid locking designed for advanced machine guarding applications in industrial automation systems. Manufactured by Pizzato Elettrica, it belongs to the NS series safety switch family used to protect operators and ensure machinery only operates when safety guards are securely closed and locked.
This device is typically installed on safety doors, hinged guards, sliding panels, and machine access points. It prevents hazardous machinery from operating while the guard is open, helping maintain compliance with EN ISO 14119 machine safety standards and modern functional safety architectures.
The NSD4SR1SMK-F41 uses a high-level coded F41 RFID actuator system, meaning it recognises only a single uniquely paired actuator for maximum anti-tamper protection and high safety integrity in demanding industrial environments.
Key Advantages
- High-security RFID safety interlock with solenoid locking.
- F41 high-level coded actuator for maximum tamper resistance.
- Designed for industrial machine safety systems and automation cells.
- Reliable dual-channel safety outputs for PLC integration.
- Integrated monitoring of door position and lock status.
- Robust industrial design for harsh environments.
Key Features
- Pizzato NS series safety interlock switch with locking function.
- Solenoid locking mechanism with fail-safe de-energised release principle.
- High-level coded RFID actuator system (F41 type).
- 2 safety outputs (OS1–OS2) for safety PLC integration.
- Actuator insertion and lock status signalling outputs.
- Industrial sealed housing for harsh environments.
- Designed for high-risk machine safety applications.
Advanced Machine Guard Safety Control
The NSD4SR1SMK-F41 ensures machinery remains safely disabled whenever guards are open or not correctly secured. The solenoid locking mechanism physically prevents access until safe conditions are achieved, while the RFID system ensures only the correct F41-coded actuator can operate the switch.
This makes it suitable for high-security automation environments where safety integrity, reliability, and tamper resistance are essential. The device integrates with safety PLCs for real-time monitoring of guard status and lock condition, including both “door closed” and “door locked” feedback signals.
Typical Applications
- Industrial automation production lines.
- Robotics safety cells and guarded machinery areas.
- CNC machining centres and tooling equipment.
- Packaging and processing machinery.
- Material handling systems and conveyors.
- High-risk safety doors, guards, and access panels.
