A core for a coil of a switching device includes an armature abutment section abutting an armature in a closed condition, an armature bearing section mounting the armature to the core, and a coil section receiving a coil and extending along a longitudinal axis from the armature abutment section to the armature bearing section. The coil section and at least one of the armature abutment section and the armature bearing section extend along separate planes offset from one another perpendicular to the longitudinal axis.

The invention relates to a DC magnetic system and a power equipment, comprises a yoke and an armature. The yoke comprise a bent U-shaped magnetic conductive member and a cover plate with a hole connected to a top end of the magnetic conductive member. The armature with a laminated structure is inserted into the yoke through the hole in the cover plate, and a bottom surface of the armature is in contact with the magnetic conductive member.