Schmersal NDR Series, Pull Release, Emergency Stop Push Button Head / 7420760

This NDRR50RT unit complies with all standards under IEC/EN 60947-1, EN 60947-5-1. The material of the front ring is chromium-plated with the following colour characteristics: •Colour of the operating element is red •Colour of the bellows is white •Colour of the front ring is silver This is a non-illuminated product with resistance to shock at 30 g / 18 ms. The device has a snap mechanism integrated in unit head and the tightening torque for fixing screws should not exceed 0,6 Nm. The ambient temperature for this unique product ranging from -25°C to +80°C. Standards of protection falls under IP67 and IP69K where the following can be expected: •IP67 (rated as ″dust tight″ and protected against immersion) •IP69K (rated as ’’complete assurance ’’provides the highest protection rating on the scale) Frequently asked questions & answers What is the different between a push button switch for an emergency stop and a general-purpose push button switch?A general-purpose push button switch is used for controls, e.g. to start machine operation or simply to switch modes. An emergency stop push button switch however, is mainly used as a safety measure to stop hazardous events.