3SB3 按钮指示灯: 有关接触元件B10参数和RDF的说明

This FAQ content statements to B10 value and RDF (Ratio of Dangerous Failures) for contact elements

QUESTION:

Is there a B10 value and RDF (Ratio of Dangerous Failures) available for the 3SU14, 3SB24, 3SB34, contact elements?

ANSWER:

The contact element 3SU14, 3SB24, 3SB34 has itself no B10 value as well no RDF (Ratio of Dangerous Failures), because this component can’t work without an actuator.
If using this contact element, then is always too an actuator needed (contact block work not alone).
The actuator itself has of course, different to the contact element 3SU14, 3SB24, 3SB34 a B10 value as well a RDF if this component is a safety relevant part with positively driven contacts, e.g. emergency stop or pushbuttons (non-latching).
For the actuator is a standard B10 value and RDF available which listed into the documents of the following entry ID 109739348.

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