SNH emergency-stop buttons

SNH emergency-stop buttons are compliant with EN ISO 13850 of EN 60947-5-1 and EN 60947-5-5. Depending on the design, they can be used up to safety category 4, performance level e or SIL 3 in accordance with the machine directive 2006/42/EG, and they satisfy the current safety standards EN ISO 13849-1 and EN 62061.

The buttons communicate with the safety switching devices of series 4000 and the safety controls samos and samos PRO and are suitable for use in numerous industries.

They are available as built-in or surface-mount versions with a standardised installation diameter of 22 mm. They can be integrated in an operator panel and can also be directly mounted to a machine using a surface-mounted housing.

The contact blocks provide various wiring options as normally closed and/or normally open contacts. Additional normally open contacts can report their status to a PLC. A separate contact element monitors the safe connection between the button and the switching contacts. This will avoid accidental failure and prevents the buttons from being circumvented.

All buttons are contacted using detachable screw connection terminals. Variations with integrated LEDs and buttons with blocking protection sleeves are available to avoid accidental operation. As emergency buttons must latch when they’re operated, solutions with key and rotary switches are available for unlocking. Emergency-stop buttons can be used for protection degrees up to IP69K.

The seven different sizes of the operating component can be combined with numerous switching options resulting in a variety of switching variations.