
IEC 61811-52 ELECTROMECHANICAL ALL-OR-NOTHING RELAYS - PART 52: BLANK DETAIL SPECIFICATION - ELECTROMECHANICAL ALL-OR-NOTHING TELECOM RELAYS OF ASSESSED QUALITY - TWO CHANGE-OVER CONTACTS, 20 MM X 10 MM BASE
出版:British Standards Institution

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IEC 61811-52 ELECTROMECHANICAL ALL-OR-NOTHING RELAYS - PART 52: BLANK DETAIL SPECIFICATION - ELECTROMECHANICAL ALL-OR-NOTHING TELECOM RELAYS OF ASSESSED QUALITY - TWO CHANGE-OVER CONTACTS, 20 MM X 10 MM BASE
出版:British Standards Institution
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