14 Advantages of Insulated Case Vs Iron Frame Smaller footprintMore reliable (Modular Design with Fewer Parts)Higher interrupting ratingsHigher withstand ratings (30 Cycles)Reduced maintenanceElectronic Trip UnitsField Installable Trip UnitsCommunicationsPower monitoring (2.5% Accuracy)
15 Mechanical Construction Breaker FramesSmall :800A ANSI,1200A UL,1600A IECMedium :800 to 3200A ANSI,800 to 3000A UL,800 to 4000A IECLarge :4000 to 5000A ANSI,4000 to 6000A UL,4000 to 6300A IEC
16 Organic Vs Iron FrameThe thermoset material of the organic case has several advantages:Very strong and lightweightProvides good insulation, isolation, and dielectricMolded to support and hold internal parts with no adjustmentsFewer parts reduces complexity of assembly and maintenance
17 Organic Vs Iron FrameThis is animated. Click the left top image to show the mech installation on the housing. The organic housing is very strong and lightweight. It provides a solid mounting base for the mechanism.Continue by clicking the top center image to show the moveable contact.The molded areas on the housing support and hold the moveable contacts with no adjustments necessary. This makes it easier to build and more reliable to use.The CTs also fit in molded supports.The organic housing provides ridgidity and a mounting area for the fixed contacts.Once the parts are installed and the housing halfs are joined together, the organic case provides good insulation, isolation and dielectric between phases and between phase and ground.The crowning touch is the patended arc chutes at are specially designed to aid in the dissipation of the heat and pressure associated with the interruption of a 200,000 Amp fault.The Organic case provides the strength, isolation, insulation, and dielectric necessary for the extremely high interrupting ratings and other features of the new Masterpact.
18 Display type A P H LCD ammeter LED Bargraph LCD All functions LCD
21 Typical Switchboard Ratings SwitchboardsTypical Switchboard Ratings5000 A Mains and Bus1200 A and smaller group mountedGreater than 1200A Individally mounted Fixed or DrawoutFront ConnectedUL 891 GearUL 489 Breakers
23 “Hybred UL 891 Switchboards” Mix Insulated Case and Molded CaseIndividially mountedFront ConnectedRear ConnectedIndividually mountedDrawoutFixedGroup Mounted and DrawoutFusible and Circuit BreakerNo requirement for isolation orBarriers
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