Safety button with key 2NC standard SP22-BSN-02. SP22-BSN-02\.

Safety button with key – reliable installation protection

This red safety button with key, with a diameter of 22 mm, is part of the SP22 series, designed for applications requiring additional protection against unauthorized start-up or shutdown. It is ideal for control systems, machines and devices where operator safety and protection against accidental state changes are a priority. The key lock design ensures that only an authorized person can activate or deactivate the function assigned to the button.

Construction and application

The button is characterized by a solid construction with a housing with a protection degree of IP65 – resistant to dust and water jets. Made of high-quality plastic, the gray front ring provides an aesthetic appearance and durability. The electrical connection is made using reliable screws, which simplifies installation and ensures a stable connection of wires with a cross-section of 0.75 to 2.5 mm². The mushroom-shaped button and its red color ensure good visibility and easy identification in emergency situations.

Designed for mounting in 22 mm diameter holes, this button is used in:

• Control cabinets
• Operator panels
• Industrial machines and equipment
• Alarm and fire systems
• Applications requiring a high level of security

Key features and benefits

• Key lock: Provides protection against unauthorized use. The key allows only authorized persons to change the button's state.
• High resistance to external conditions: The IP65 protection class guarantees reliable operation even in harsh industrial conditions.
• Two current paths: It has two normally open (NO) contacts, which allows for flexible use in various control circuits. The lack of normally closed (NC) and changeover (CO) contacts should be taken into account when designing the circuit.
• Non-latching: After pressing the button remains in the closed position until the key lock is released – ideal for emergency stop or safety lock functions.
• Compliance with standards: Meets the requirements of the PN-EN 60947-5-1 standard, which confirms its safety and reliability.
• Easy installation: Screw connection simplifies wire connection.
• Durable materials: Ensure long-term operation even in demanding working conditions.