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Book Description paperback. Condition: New. Language:Chinese.Pages Number: 233 Publisher: Machinery Industry Press. Pub. Date :2004-2-1. This book is divided into eight chapters. the book focuses on the electrical power for heating and electrical. electrical contact with the arc. the theoretical basis of electromagnetic institutions. also introduced in the low-voltage electrical relays. contactors. fuses and low-voltage circuit breakers. etc. The basic structure. working principle. the main technical parameters and requirements. as wel. Seller Inventory # LA3189