| 摘要 |
<p>An H-armature rotary actuator 500 is suitable for use in a two-pole contactor and comprises a coil 504 wound on a magnetic core 508, two vertical magnetic upstands 510a, 510b coupled to the core, and an H-armature 514 that is situated vertically above the coil. The magnetic upstands pass perpendicularly between the two pole pieces 514a, 514b of the H-armature, and the armature is configured to pivot, in a horizontal plane vertically above the coil, to switch between a first latched state, in which it is magnetically latched with the upstands, and a second latched state, in which it is magnetically latched with the upstands. Armature 514 pivots in a plane that is spaced apart from coil 504 in a direction that is perpendicular to the plane. Armature 514 can have magnet 512 between pole pieces 514a,514b and pivot on a spigot 516 attached to a bobbin on which the coil is wound. The actuator can be used to drive a two-pole contactor (fig 6) for an electricity meter.</p> |
