3SU1901-0BD31-0NB0 SIEMENS

The 3SU1901-0BD31-0NB0 is a specialized washer designed for use with EMERGENCY STOP mushroom pushbuttons. This round washer is constructed from a durable yellow plastic material, ensuring high visibility and quick identification in emergency situations. It is specifically designed to be illuminated, further enhancing its visibility, especially in low-light conditions. The washer has a thickness of 5 mm, providing a robust and reliable interface between the pushbutton and the mounting surface. Its outer diameter measures 60 mm, while the inner diameter is 23 mm, ensuring a precise fit with compatible EMERGENCY STOP pushbuttons. The washer features a clear inscription of "EMERGENCY STOP" in four languages: German (DE), English (EN), Italian (IT), and Spanish (SP), catering to a diverse user base. This multilingual inscription ensures that the emergency stop function is universally understood, regardless of the operator's language. It is typically used in industrial settings and machinery where emergency shutdown mechanisms are critical for safety. Siemens is the manufacturer.