Pole number: 1P~4P;
Rated current: 1A-63A;
Breaking capacity: Ics=3000A; Standard GB10963.13)
① Arc extinguishing cover: The thickness of the arc extinguishing cover has been changed to 0.5mm, with an estimated cost reduction of 0.045 yuan per level (completed);
② Complete contact verification: Change from copper alloy to copper base point, with an estimated cost reduction of 0.03 yuan per level (completed);
③ The prototype of copper clad aluminum material has been verified, with an estimated reduction of 0.05 yuan per pole; (Completed)
④ 25A and below are expected to decrease by 0.19 yuan per pole.