FIELD: electrical engineering.
SUBSTANCE: invention relates to electrical engineering and can be used in manufacture of air circuit breakers. Automatic air circuit breaker comprises cam, drive lever coupled with aforesaid cam to turn thereabout, making spring compressed by drive level, multiple pivots to transmit drive force generated in expansion of breaking spring. It includes also switching shaft coupled with one of the pivots to turn in compliance with pivot motion and breaking spring with its one end furnished with tie-don hole with one open side for fastening on connection shaft perpendicular to its lengthwise axis.
EFFECT: reduced production costs and assembly time, easier mounting.
9 cl, 12 dwg
