E-T-A Circuit Breakers 8350-AC1B-MACS-L0AB0D-50A Hydraulic-Magnetic Single, two, three and four pole magnetic and hydraulic-magneticcircuit breakers with trip-free-mechanism and toggle or rockeractuation. A choiceof fast magnetic only or hydraulically delayedswitching characteristics(S type MO or HM CBE to EN 60934)e