Product description:
Allis Chalmers MA-250C-1 Ruptair Power Circuit Breaker; Rated Max. Volts: 4760 rated amps.: 2000 cycles: 60 rated range, K Factor: 1.24 interrupting, time: 5 cycles, used in Type D Switchgear. Electrically operated, draw-out. Used As-Is.
EMSCO# AB-2013-19575 LOC: AB9-II1