UNE-EN 3841-307:2004 Aerospace series - Circuit breakers - Test methods - Part 307: Performance with a locked tripping system (Endorsed by AENOR in April of 2005.)
2005UNE-EN 3841-307:2004 Aerospace series - Circuit breakers - Test methods - Part 307: Performance with a locked tripping system (Endorsed by AENOR in April of 2005.)