Wieland Electric SNH emergency stop buttons

SNH emergency stop buttons from Wieland Electric have been approved by TÜV and for the North American market in accordance with UL/CSA and satisfy the relevant standards EN ISO 13850 of EN60947-5-1 and EN60947-5-5.

Depending on the design, they can be used up to safety category 4, performance level e or SIL3 in accordance with the machine directive 2006/42/EG, and they satisfy the current safety standards EN ISO 13849-1 and EN62061.

The emergency stop buttons 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 also be directly mounted on a machine using a surface-mounted housing.

The contact blocks provide various wiring options as normally closed 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 wired 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. SNH emergency stop buttons can be used for protection degrees up to IP69K.