Can the D range AC contactor be mounted on the ceiling ?
The AC contactor mounted horizontally as follows - Not recommended practice
For contactors with AC coil, when the contactor is mounted in horizontal position, the speed for making and breaking is impacted :
Floor mounted : the opening is slower.
Ceiling mounted : the closing is slower.
Then when mounted in horizontal position, the following recommendations shall apply :
Use on fix machines only (no vertical shocks allowed),
Electrical durability not guaranteed (derating probably in the order of 0,70 but no existing confirmation tests)
AC1 current derated at 80% of the catalogue values,
Inrush voltage for contactors mounted on the floor:
Drop-out voltage for contactors mounted on the floor:
Inrush voltage for contactors mounted on the ceiling:
Drop-out voltage for contactors mounted on the ceiling:
For example, for LC1D32* fitted:
in normal position, the drop out control voltage limits is 0,3 to 0,6 Uc,
on floor position, the drop out control voltage limits is 0,28 to 0,56 Uc (0,3x0,94 and 0,6x0,94).