Small distribution box does not require high security of lock, and the operation of lock is not too complex. It is mainly used to prevent the power supply equipment from being exposed. It is convenient to unlock in case of an emergency. It can use a flat single point lock, and the box door can be opened when the handle pops up.

The outdoor box type substation has high security to the lock. It can lock the outside of the cabinet at two or three points and add the padlock. The magnetic structure can lock the protective cover.