Why Choose the Pizzato NSD4ST1SA2-F41 Safety Interlock Switch?
The Pizzato NSD4ST1SA2-F41 is a high-reliability RFID safety interlock switch with guard locking designed for industrial machine safety applications requiring secure access control and consistent guard monitoring. It belongs to the advanced Pizzato NS NS-series safety locking switch family, engineered for robust actuator recognition, solenoid locking, and high-integrity safety feedback in automated machinery systems.
This model uses a de-energised solenoid locking mechanism combined with high-level RFID coding (F41), ensuring strong protection against tampering by allowing only a uniquely coded actuator to operate the switch. It is designed for compliance with EN ISO 14119 and is widely used in safety-rated industrial automation systems.
With its compact technopolymer housing, industrial sealing, and IP67/IP69K protection rating, the NSD4ST1SA2-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 high 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 monitoring.
- Integrated diagnostic outputs for actuator and lock status (O3/O4).
- Designed for PL e / SIL 2–3 safety architectures in industrial automation systems.
- Suitable for series connection in safety chains for complex machinery systems.
Key Features
- Pizzato NS-series safety interlock switch with locking.
- Model: NSD4ST1SA2-F41.
- RFID high-level coded actuator recognition (F41).
- De-energised solenoid guard locking (fail-safe design).
- M12 12-pole industrial connector interface (typical NS architecture).
- Safety outputs OS1/OS2 with diagnostic signals O3/O4.
- Auxiliary release function for maintenance and emergency access.
Reliable Machine Guarding and Safety Control
The Pizzato NSD4ST1SA2-F41 ensures machinery only operates when protective guards are correctly closed and locked. When the RFID-coded actuator is detected and locking 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 status and lock condition, ensuring reliable integration into PLC-based safety architectures in industrial automation environments.
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.
