Illuminated safety button 4NC standard SP22-BLN-40-LEDUNI. SP22-BLN-40-LEDUNI\.

Illuminated safety button – reliable protection for installations

This red, illuminated safety button with four normally closed (4NC) contacts is a robust control element designed for applications requiring immediate circuit disconnection in emergency situations. Its design and parameters make it an ideal choice for both professional installers and end-users looking for a reliable solution.

Construction and application

The button, with a diameter of 22 mm, a round lens and a grey front ring, is designed for mounting in openings measuring 22 x 22 mm. The front ring, made of high-quality plastic, ensures durability and resistance to mechanical damage. Screw connection guarantees a secure and stable connection of wires with a cross-section of 1…2.5 mm² (solid) or 0.75…1.5 mm² (stranded). Thanks to the IP65 protection class, the button is resistant to dust and water jets, allowing it to be used in harsh industrial conditions.

This button finds application in a wide range of devices and machines where quick and safe power disconnection is required. It is ideal for:

• Control cabinets
• Operator panels
• Industrial machines and equipment
• Safety-related applications

Key features and benefits

• Safety first: Mushroom head design and non-latching function provide clear indication of the off state and prevent accidental restarting of the device.
• Durability and reliability: The button is designed to operate in a wide temperature range (from -40°C to +70°C) and is characterized by high resistance to vibration and shock. It complies with the standards PN-EN 60947-5-1, IEC 60947-5-1, IEC 60947-1 and PN-EN 60947-5-5.
• Convenient installation: The standard hole size (22 mm) facilitates integration with existing control panels. Screw connection ensures quick and secure wiring.
• Clear signaling: UNI LED illumination (power supply 24-230 V AC or 24-110 V DC) ensures good visibility even in low light conditions. The red color of the button additionally draws attention to its safety function.
• Electrical parameters: Suitable for operation with rated currents up to 10 A (continuous Iu=Ith) and switching currents depending on the AC-15/DC-13 category. Protected by a 10 A fuse.