Spamel ST22-SAA-10 2-Position Key Switch 22mm Black 1NO Maintained

The Spamel ST22-SAA-10 is a professional-grade 2-position key-operated switch engineered for secure control in industrial environments. Designed for standard 22mm mounting holes, this switch features a durable black finish and a reliable 1NO (normally open) contact configuration. The maintained switching action ensures that the device stays in the selected position until manually changed by the key, providing stable and consistent operation for various electrical systems.

Advantages

This key switch offers a high level of security by restricting access to authorized personnel only, preventing accidental or unauthorized activation of machinery. Its robust construction ensures long-term reliability even in demanding industrial settings. The maintained contact mechanism is ideal for applications where a constant state is required without the need for continuous manual pressure. Furthermore, the standard 22mm diameter allows for easy integration into existing control panels and electrical enclosures.

Suitable for

• Industrial machinery control panels
• Security systems requiring manual activation
• Electrical distribution boards
• Access control for automated equipment
• Emergency stop or system bypass configurations

This switch may not be suitable for applications requiring momentary contact, where the circuit should only be closed while the key is held in position. It is also not intended for outdoor environments without appropriate protective enclosures to prevent moisture or dust ingress.

Key specifications

• Mounting diameter: 22mm
• Switch positions: 2
• Contact configuration: 1NO (Normally Open)
• Operation type: Maintained
• Color: Black

To install the Spamel ST22-SAA-10, insert the switch body into the 22mm panel cutout and secure it using the provided locking nut. Ensure the electrical connections are made to the 1NO contact terminals according to your wiring diagram. Once installed, the switch is operated by inserting the key and turning it to the desired position, where it will remain until the key is turned back.

What to consider before purchase

• Verify that the 22mm mounting hole size matches your panel requirements.
• Ensure the 1NO contact configuration is compatible with your control circuit logic.
• Confirm that a maintained (non-momentary) switch is appropriate for your specific application.

For optimal performance and longevity, ensure that the switch is kept clean and that the key mechanism is operated smoothly without excessive force. Regularly inspect the electrical connections to ensure they remain tight and free from corrosion.