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西门子5SJ4320-7HG42断路器480Y/277V 10kA 3极 20A 5SJ43207HG42
SIEMENS西门子5SJ4320-7HG42小型断路器5SJ43207HG42全新原装正品
5SJ43207HG42【MCB 5SJ4 3P 480/277 20A 10K C-TR】