Mounting oreintation
I did a little analysis on the circuit breaker. Please refer to attached x-ray analysis. The top picture is a control sample in the the "on" position prior to an inpact. Main areas of interest are a) on and off switch, b) thermal unit and c) breaks contacts. Not labeled on the photo is the moving component at 1 oclock on the yellow circle.
The sample was then subjected to an impact which popped the breaker.
It appears the "thermal unit" moves when the impact happens, which is followed by moving component swinging down to the right and pop............... end of match.
Conclusion
Mount the circuit breaker with "ON" position down and "OFF" position upwards. With this oreintation the thermal unit's gravity works in our favor.
Stevo
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Lead or follow
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