CPC Main Group Additional Only
F23N 2231/00 Fail safe
13 direct subcodes
Child Classifications
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- F23N 2231/02 using electric energy accumulators
- F23N 2231/04 for electrical power failures
- F23N 2231/06 for flame failures
- F23N 2231/10 for component failures
- F23N 2231/12 for ignition failures
- F23N 2231/14 for earthquakes
- F23N 2231/16 using melting materials or shape memory alloys
- F23N 2231/18 Detecting fluid leaks
- F23N 2231/20 Warning devices
- F23N 2231/24 Freezing
- F23N 2231/26 for clogging air inlet
- F23N 2231/28 preventing flash-back or blow-back
- F23N 2231/30 Representation of working time