The SNH emergency stop buttons are important components for overall solutions in safety technology; they communicate with the safety switching devices of Series 4000 and the safety controls Samos and Samos PRO from Wieland Electric. They are used in almost all industries, from elevators to packaging systems.

The SNH emergency stop buttons are available as built-in or surface-mount versions with a standardized installation diameter of 22mm. They can be integrated in an operator panel and 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 emergency stop button and the switching contacts. This will avoid accidental failure and prevents the buttons from being circumvented.

All emergency stop buttons are contacted using detachable screw connection terminals. Variations with integrated LED lighting as well as buttons with blocking protection sleeves are available to avoid accidental operation. As emergency buttons must latch when they are 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.