Connector with a normally open contact 01, red, for ST22 buttons. ST22\01-1

Normally Closed (NC) switch – a reliable element of electrical installations

This normally closed switch, marked in red and with the NC (normally closed) symbol, is designed to work with control buttons from the ST22 series. Its design and parameters make it suitable for both simple control circuits and more complex systems. Made with attention to detail, it ensures safe and efficient operation.

Construction and application

The ST22\01-1 switch is mounted on a rail or directly on the device housing (front mounting). Its main task is to break the circuit when the associated button is pressed. The NC characteristic means that the contact is closed under normal conditions and opens when the button is pressed. This solution is particularly useful in applications requiring immediate power disconnection in emergency or undesirable situations.

Screw connection ensures a secure and durable connection of wires, minimizing the risk of loosening connections during operation. The minimum effective opening distance is 3.5 mm, and the maximum, including the final stroke, is 6 mm. The force required to reach the open position is 11 N.

Key features and benefits

• Versatility: Compatible with ST22 buttons, making it easy to integrate with existing control systems.
• Safety: The NC characteristic guarantees immediate circuit disconnection when the button is pressed, increasing safety.
• Durability: Made of high-quality materials, resistant to mechanical damage and external factors.
• Easy installation: Front mounting simplifies installation in various configurations.
• Secure connections: Screw connection provides stable and reliable electrical wire connections.
• Optimized parameters: Rated operating current of 2.5A for AC-15, 230V allows use in a wide range of applications.
• Compact dimensions: Small size (weight 11g) allows installation in limited space.

This switch is a solid choice for professionals and individuals undertaking electrical projects – reliability and ease of installation go hand in hand with safety.