Introduction...............................................................................2 Need.for.Circuit.Protection........................................................4 Types.of.Overcurrent.Protective.Devices. .................................8 . Circuit.Breaker.Design............................................................. Types.of.Circuit.Breakers.........................................................23 Circuit.Breaker.Ratings............................................................27 Time-Current.Curves. ..............................................................29 . Selective.Coordination.............................................................32 Series-Connected.Systems.....................................................34 Siemens.Circuit.Breakers........................................................37 Residential.Circuit.Breakers.....................................................38 Panelboard.Circuit.Breakers. ...................................................46 . General.Purpose.Thermal-Magnetic.Circuit.Breakers. .............49 . Solid-State.Trip.Unit.Circuit.Breakers.......................................56 Internal.Accessories................................................................62 External.Accessories...............................................................65 VL.Circuit.Breakers.................................................................. 7 WL.Circuit.Breakers. ...............................................................79 . Review.Answers......................................................................84 Final.Exam...............................................................................85 quickSTEP.Online.Courses......................................................88
Introduction
Welcome.to.another.course.in.the.STEP.series,.Siemens. Technical.Education.Program,.designed.to.prepare.our. distributors.to.sell.Siemens.Energy.&.Automation.products.