1746-IV16 A-B 电气设备

A-B 193-ECM-ETR
A-B 1746-OB16
A-B 1747-L553
A-B MPL-B430P-SJ22AA
A-B 1756-L73
A-B 1756-OF8
A-B 707973-10TREV.03
A-B 1407-CGCM
A-B 1756-RM/A
A-B 1756-L62
A-B 2098-DSD-030-SE
A-B 1756-OF8
A-B 1756-RM
A-B 1756-EN2TR
A-B 1440-ACNR

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Description

对熔断器的要求是:在电气设备正常运行时,熔断器不应熔断;在出现短路时,应立即熔断;在电流发生正常变动(如电动机起动过程)时,熔断器不应熔断;在用电设备持续过载时,应延时熔断。对熔断器的选用主要包括类型选择和熔体额定电流的确定。

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