Suggestion: Reference:
Donald G. Fink, H. Wayne Beaty "Standard Handbook for Electrical Engineers," 14th Ed., McGraw-Hill, 2000,
page 10-84
Air Circuit Breaker
Briefly, ACBs resemble switchgear. They are applied as switchgear in switchgear housing or switchboards.
Molded-Case Circuit Breaker
MCCBs are completely enclosed within a ruggedly constructed molded case of insulating material.
Often available from 15A to 4000A, 1-, 2-, 3- and 4-poles, 5kA to 45kA Isc and high interrupting ratings up to 200kA.
Also, refer to manufacturers' catalogs.