Changeover contactor 01 for rail mounting, red color, NC for ST22 buttons ST22\01-1-SZ

Normally Closed Switch for Rail Mounting – Reliability in Control

This red normally closed switch, designed for rail mounting, is a key element in control and signaling systems. Compatible with ST22 buttons, it ensures precise and safe operation in various industrial and automation applications. Its screw connection-based construction guarantees stable electrical connections, and its compact dimensions facilitate integration with existing installations.

Construction and Application

The ST22\01-1-SZ switch is a component dedicated to creating control circuits where reliable signal switching is required. Its construction based on a normally closed contact (NC – normally closed) means that under normal conditions the contact is closed, and opens only after activation of the associated button. This solution finds application in safety systems, building automation, and in industrial machines and equipment. Rail mounting allows for quick and easy installation and modification of the control system.

Key Features and Benefits

• Application: Specifically designed to work with ST22 buttons, ensuring a perfect fit and seamless integration.
• Durability: Rated operating current of 2.5 A for AC-15 at 230 V guarantees reliable operation even under load.
• Precision: Minimum effective opening travel of 3.5 mm and maximum travel including final travel of 6 mm ensure precise signal switching.
• Stable Connections: Screw connection provides secure and durable electrical connections, minimizing the risk of failure due to loose wires.
• Compact Dimensions: Weight of only 11 g and small dimensions facilitate mounting in tight spaces and integration with other components.
• Torque: Recommended tightening torque for terminals is 0.5 Nm – this is important to ensure proper operation and avoid damage.
• Opening Force: 11 N force required to reach the effective opening position ensures reliable operation of the switching mechanism.

The switch is characterized by its mounting method to the base and has a screw electrical connection. It has one normally closed contact, allowing for flexible use in various control circuit configurations. The minimum effective opening travel is 3.5 mm, and the maximum including the final travel reaches 6 mm, which affects the precision of the device.

This switch is a solid solution for professionals looking for reliable components for control and automation systems. Its simple construction and easy installation make it an ideal choice for both installers and end-users who value functionality and durability.