Safety button 2 NC/NO nickel-plated ring ST22-B-02. ST22-B-02\.

Safety button – reliable protection and control

This safety button, catalog number ST22-B-02, is a key element in systems requiring precise control and protection. It is a mushroom head button actuator, designed for applications where maintaining the activated state is important until deliberate unlocking – however, it is not suitable for emergency stop (E-STOP) function. The construction and materials guarantee reliable operation even in harsh industrial conditions.

Construction and application

The button is characterized by a solid construction with a red mushroom head and a gray front ring made of plastic. The unlocking mechanism by rotation minimizes the risk of accidental state change, which is particularly important in applications requiring a high level of safety. A 22 mm mounting hole diameter ensures compatibility with most standard control panels. The IP65 protection class guarantees resistance to dust and strong water jets, allowing installation in environments exposed to moisture and contamination.

Advantages and benefits for the installer and user

• Safety: The unlocking mechanism by rotation prevents accidental starting or stopping of the process.
• Durability: Made of high-quality materials ensures a long service life even in demanding industrial conditions.
• Resistance to external factors: IP65 protection class protects against dust and water, increasing reliability.
• Easy installation: Standard 22 mm hole diameter facilitates integration with existing control panels.
• Clear identification: Red button color and gray front ring provide good visibility and compliance with labeling standards.
• Precise control: Allows maintaining the activated state until deliberate unlocking, which is crucial in specific safety applications.
• Compliance with standards: The product meets the requirements of PN-EN 60947-5-1 and IEC 60947-5-1 standards, confirming its safety and reliability.

Technical parameters in practice

The button has two normally open (NO) contacts, allowing its use in various control circuit configurations. Screw connection provides a secure and durable connection of wires with a cross-section from 1 mm² to 2.5 mm². The rated insulation voltage Ui is 500 V, and the rated continuous current Iu/Ith is 10 A – these parameters allow safe use of the button in a wide range of electrical applications. Mechanical durability at the level of 300 thousand switching cycles guarantees long-term trouble-free operation of the device.

The IP65 protection class allows mounting in humid and dusty environments. A 22 mm mounting hole diameter ensures compatibility with most control panels. Two normally open (NO) contacts provide flexibility in control circuit configuration. The rated insulation voltage Ui at 500 V guarantees safety in various electrical installations, and the rated continuous current Iu/Ith of 10 A enables use in circuits with different loads.

Please remember: this button is not intended for emergency stop (E-STOP) function.