Why Choose the Pizzato NSD4ST1SA1-F41 Safety Interlock Switch?
The Pizzato NSD4ST1SA1-F41 is a robust RFID safety interlock switch with guard locking designed for industrial machine safety applications requiring reliable access control and consistent guard monitoring. It is part of the proven Pizzato NS NS-series safety locking switch family, engineered for secure actuator recognition, solenoid-based locking, and high-integrity safety feedback in automation systems.
This model operates using a de-energised solenoid locking principle combined with high-level RFID coding (F41), ensuring strong protection against tampering and keeping machine guards securely locked during hazardous machine operation. It is designed in accordance with EN ISO 14119 requirements for modern industrial safety systems.
With its compact technopolymer housing, industrial-grade sealing, and IP67/IP69K protection rating, the NSD4ST1SA1-F41 is suitable for robotic cells, packaging machinery, conveyors, and OEM automation equipment where dependable guard locking and safety interlocking are required.
Key Advantages
- High-security RFID-coded actuator system (F41 coding level) for strong anti-tamper protection.
- Solenoid guard locking with fail-safe de-energised release principle.
- Dual safety outputs (OS1/OS2) for redundant guard status monitoring. ([pizzato.com](https://www.pizzato.com/en/catalog/NSD4ST1SMKF41.html))
- Integrated diagnostic outputs for actuator and lock status (O3/O4). ([pizzato.com](https://www.pizzato.com/en/catalog/NSD4ST1SMKF41.html))
- Designed for PL e / SIL 2–3 safety system architectures in industrial automation. ([pizzato.com](https://www.pizzato.com/media/images/catalog/item/File/pdf/ZE_GCS06-ENG_187-204.pdf))
- Suitable for series connection in safety chains for complex machinery systems.
Key Features
- Pizzato NS-series safety interlock switch with locking.
- Model: NSD4ST1SA1-F41.
- RFID high-level coded actuator recognition (F41).
- De-energised solenoid guard locking (fail-safe design).
- M12 12-pole industrial connector interface.
- Safety outputs OS1/OS2 with diagnostic signals O3/O4.
- Auxiliary release for maintenance and emergency access.
Reliable Machine Guarding and Safety Control
The Pizzato NSD4ST1SA1-F41 ensures machinery only operates when protective guards are correctly closed and locked. When the RFID-coded actuator is detected and the locking system is engaged, the safety outputs enable controlled machine operation under safe conditions.
If the guard is opened or the locking condition is removed, the system triggers an immediate safe stop. Continuous diagnostics monitor actuator and lock status, ensuring reliable integration into PLC-based safety architectures used in industrial automation systems.
Typical Applications
- Industrial automation machinery.
- Robotic safety enclosures.
- Packaging and production systems.
- Conveyor and material handling systems.
- OEM machine building applications.
- General machine safety guarding systems.
