关键词：断路器；保护；电气电路；短路；电开关
摘 要：A circuit breaker is an electrical switch that is used to protect an electric circuit from short-circuiting and overloading. If there is an overloading problem, the circuit breaker detects it and the supply is turned off automatically. A fuse is used to prevent current overload and consists of a wire inside the component that heats up and melts disconnecting the circuit from the overloading power source and thereby protecting all the electrical and electronic devices in the circuit. A relay is a switch that opens and closes a circuit electronically. It controls one circuit through opening or closing contacts in another circuit.
目 录：

01. Executive Summary

02. List of Abbreviations

03. Scope of the Report

03.1 Market Overview

03.2 Product Offerings

04. Market Research Methodology

04.1 Market Research Process

04.2 Research Methodology

05. Introduction

06. Market Landscape

06.1 Market Overview

06.2 Market Size and Forecast

06.3 Five Forces Analysis

07. Market Segmentation by Product

07.1 Global Circuit Breaker Market

07.1.1 Market Size and Forecast

07.2 Global Fuse Market

07.2.1 Market Size and Forecast

07.3 Global Relay Market

07.3.1 Market Size and Forecast

08. Geographical Segmentation

08.1 Circuit Breaker, Fuse, and Relay Market in the APAC Region

08.1.1 Market Size and Forecast

08.2 Circuit Breaker, Fuse, and Relay Market in Europe

08.2.1 Market Size and Forecast

08.3 Circuit Breaker Market in North America

08.3.1 Market Size and Forecast

09. Buying Criteria

10. Market Growth Drivers

11. Drivers and their Impact

12. Market Challenges

13. Impact of Drivers and Challenges

14. Market Trends

15. Trends and their Impact

16. Vendor Landscape

16.1 Market Share Analysis 2013

16.2 Other Prominent Vendors

17. Key Vendor Analysis

17.1 ABB Ltd.

17.1.1 Business Overview

17.1.2 Business Segmentation

17.1.3 Key Information

17.1.4 SWOT Analysis

17.2 Alstom SA

17.2.1 Business Overview

17.2.2 Business Segmentation

17.2.3 Key Information

17.2.4 SWOT Analysis

17.3 Schneider Electric Co.

17.3.1 Business Overview

17.3.2 Business Segmentation

17.3.3 Key Information

17.3.4 SWOT Analysis

17.4 Siemens AG

17.4.1 Business Overview

17.4.2 Business Segmentation

17.4.3 Information

17.4.4 SWOT Analysis

17.5 Toshiba Corp.

17.5.1 Business Overview

17.5.2 Key Information

SWOT Analysis

18. Other Reports in this Series