LV Power Circuit Breakers | Siemens 480V guide

480V Metal-Enclosed Switchgear

LV Power Circuit Breakers

Technical

Time/Current Characteristics of Static Trip® III Trip Unit

4

480V Enclosed-MetalSwitchgear

	62	Siemens Electrical Products and Systems	CSI Section 16470
		Specification Guide

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Siemens 480V manual LV Power Circuit Breakers, Time/Current Characteristics of Static Trip III Trip Unit

Contents

Utility and Co-generation Facilities LV switchgear is typically installedGeneral Industry Standards 480V Metal-Enclosed Switchgear General Assembly ConstructionConstruction Details Finish Insulation Control WiringMain and Ground Bus Circuit Breaker Compartments Guide Form Specifications Options Circuit Breaker Racking LV Power Circuit BreakersTypical Breaker Features Primary Disconnects Arc Interruption Ground ConnectionDrawout Interlocks Current Limiting Fuses Static Trip III Trip Unit LV Power Circuit Breaker Trip UnitStatic Trip III Settings Static Trip Iiicpx Protective Relay Functions Accessories/ModificationsRL Breaker Tripping Actuator Shunt Trip Coil Ratings RL Breaker Accessories / Modifications cont’d Technical 11 Control Power Transformers-115C RiseVT, CPT, CT Data LV Power Circuit Breakers Ratings 17 Type RL Circuit Breaker Control Data 15 Type RLF Fused Circuit Breaker Ratings At 50/60 Hertz16 Type RL Circuit Breaker Operating Data 60 Hertz Basis Time/Current Characteristics of Static Trip III Trip Unit 19 Breaker Element Weight in lbs. kg Weights and DimensionsDimensions 20 Fused Element Weight in lbs. kg Breaker Designations Auxiliary / Breaker Section Dimensions22 Breaker Section and Connection Weights in lbs. kga Tie Breaker Sections and Combinations Front Views Indoor Side View Indoor Floor Plan, Side ViewIndoor Floor Plan Outdoor Floor Plan, Side View Outdoor Floor Plan Codes and Standards SpecificationsAssembly Bus Solid State Trip Units TestingCircuit Breakers Instrumentation and Metering