The invention discloses a stable and
voltage-resistant power
relay. The power
relay comprises a casing, a base, an armature, a yoke, a pushrod, a normally-closed static spring, a normally-open staticspring and a dynamic spring, wherein the armature and the yoke are connected together through an elastic sheet, the yoke is installed on the base in an inserted mode, limit blocks at the bottom of thecasing prevents the yoke from shifting upwards, a baffle in the casing avoids lateral shift of the armature, arc-shaped stop blocks avoid
upward shift of the armature, the
tail of the armature and avoltage-resistant slot of the base are in clearance fit, the
tail of the armature is connected with one end of the pushrod through a connecting hole, the other end of the pushrod is connected with a connecting hole of the dynamic spring, an insulation screen is arranged in the middle of the pushrod, the creepage distance between the dynamic spring and the armature is prolonged, the normally-open static spring with a buffer sheet is inserted into the base, a trapezoidal protective plate of the base is in fit with the buffer sheet, and limit protection of the normally-open static spring is realized. The stable and
voltage-resistant power
relay has the advantages of being compact in structure, small in size, excellent in insulating property, resistant to
voltage, high in stability, long in product service life and the like; and moreover, the structure is simple, and it is convenient to perform
processing and realize automatic assembling.