Safety control button (1NO, 1NC) nickel-plated ring ST22-B-11. ST22-B-11\.

Safety button for industrial and other applications

This red ST22-B safety control button is a reliable control element designed for applications requiring precision and safety. The construction with a non-self-resetting mechanism and rotary release makes it ideal for applications where maintaining the state after activation is crucial. Manufactured by the renowned company Spamel, it guarantees high quality and durability.

Construction and application

The ST22-B button is characterized by a round lens shape and a high mushroom head, which ensures easy identification and operation. The gray front ring made of plastic adds aesthetics and functionality. The product is designed for mounting in 22 mm diameter holes and has an IP65 protection rating, which means it is resistant to dust and strong water jets – an ideal solution for harsh industrial conditions. However, it is important to remember that this button is not intended for emergency stop (E-STOP) function in accordance with machine safety standards, but rather for specific safety functions requiring unlocking by rotation.

Key features and benefits

• Non-self-resetting mechanism: Ensures the state is maintained after activation, which is important in applications requiring continuous monitoring or locking.
• Rotary release: Requires deliberate action by the operator to return the button to its initial position, increasing the level of safety.
• Durable construction: Made of high-quality materials, resistant to mechanical damage and external factors.
• IP65 protection rating: Guarantees protection against dust and water, allowing operation in harsh industrial conditions.
• Standard mounting hole size (22 mm): Facilitates integration with existing control panels and electrical cabinets.
• Red button color: Provides high visibility and compliance with safety element labeling standards.
• Wide application: Ideal for machines and devices where a safety signal must be maintained until operator intervention – e.g. systems protecting against uncontrolled movement or start-up.

Technical specifications

The ST22-B button has one normally open (1NO) and one normally closed (1NC) contact, allowing its use in various control circuits. The electrical connection is made using screw connection. The product meets the requirements of PN-EN 60947-5-1 and IEC 60947-5-1/5/5 standards, which confirms its compliance with European safety standards. The rated insulation voltage is 500V and the rated continuous current Iu=Ith is 10A.