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Fuji Electric EW50RAG User Manual

Fuji Electric EW50RAG
114 pages
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DISTRIBUTION
Molded Case Circuit Breakers & Earth Leakage Circuit Breakers
Technical information
62D4-E-0058

Table of Contents

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Fuji Electric EW50RAG Specifications

General IconGeneral
BrandFuji Electric
ModelEW50RAG
CategoryCircuit breakers
LanguageEnglish

Summary

Chapter 1 Protecting low-voltage circuits

Overcurrent Protection Principles

Details overload and short-circuit protection mechanisms and their importance.

Chapter 2 Operating characteristics and performance

Overcurrent Tripping Characteristics

Explains types of overcurrent tripping (inverse-time, instantaneous, short-time) and influencing factors.

Breaking Performance Details

Details short-circuit current breaking, including capacity, let-through current, and arc space.

Chapter 3 Selection and application

MCCB Selection Check Points

Lists essential points to consider when selecting MCCBs for low-voltage circuits.

Wiring Protection

Focuses on protecting wiring from overcurrents using MCCBs and thermal characteristics.

Motor Circuit Applications

Details overcurrent protection for motors, including starting current considerations.

Ground Fault Protection in System Applications

Explains grounding systems and ground fault protection methods for low-voltage circuits.

Chapter 5 Maintenance inspections

Faults and Causes of MCCB Operation

Details common MCCB faults, their causes, and recommended countermeasures.

Chapter 6 Short-circuit current calculation

Calculating Short-Circuit Current

Explains the objective and methodology for calculating short-circuit current in systems.

Safety Considerations

General Safety Precautions

Lists crucial safety precautions and guidelines for product usage and installation.

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