Safety button with key 1 NC 1 NO standard SP22-BSN-11. SP22-BSN-11\.

Safety button with key – a reliable control element

This red safety button with key, with a diameter of 22 mm, is a solid solution for applications requiring additional protection against unauthorized start-up. Designed for mounting in 22x22 mm openings, it is an integral part of control and safety systems in various devices and installations. The key lock design ensures that only authorized personnel can activate the function assigned to the button.

Construction and application

The button is characterized by a mushroom-shaped design, which makes it easy to operate even with gloves. Made of high-quality materials, including a plastic front ring, it guarantees durability and resistance to mechanical damage. The IP65 protection class provides protection against water jets and dust, making it ideal for use in harsh industrial conditions. The electrical connection is made using reliable screw terminals.

This button is primarily used in:

• Machines and equipment requiring protection against accidental start-up.
• Control cabinets and electrical switchboards.
• Alarm and fire systems (in conjunction with appropriate circuits).
• Industrial applications where operator safety is a priority.

Key features and benefits

• Safety: The key lock prevents unauthorized start-up of the device or system.
• Durability: Made of durable materials ensures long-lasting and trouble-free operation.
• Resistance to external conditions: IP65 protection class guarantees operation in dusty and humid environments.
• Versatility: It has one normally open (NO) contact and one normally closed (NC) contact, allowing for flexible adaptation to different control schemes.
• Easy installation: Screw connection facilitates quick and secure connection of wires.
• Compliance with standards: Meets the requirements of PN-EN 60947-5-1 standard, confirming its safety and reliability.
• Clear identification: The red color of the button and the gray front ring ensure good visibility and easy identification of the button function.

Additionally, the lack of self-return (non-latching) means that the button remains in the activated position until the key lock is released – this is important in applications requiring maintaining an alarm state or shutting down the device.