Gravity. Potential for G loads disconnecting it. Also is why starter solenoid is the opposite orientation. So the older & wiser folks told me back when,,,
I saw an article where someone calculated the G loading that would be required to disconnect a contactor...you are likely to have other, more serious issues, before that contactor will disconnect due to G loading...
I saw an article where someone calculated the G loading that would be required to disconnect a contactor...you are likely to have other, more serious issues, before that contactor will disconnect due to G loading...
I saw an article where someone calculated the G loading that would be required to disconnect a contactor...you are likely to have other, more serious issues, before that contactor will disconnect due to G loading...
The EAA electrical class that I just attended said mounting the contractor sideways would mitigate any problem with inadvertent activation due to G loading.
The contactor is not held closed by a spring. In fact, the spring works to push the contactor open. It is pulled and held closed by an electrically generated, magnetic field, opposing the spring pressure.