2B2UM,断路器 3 POLE, 480Y/277VAC, UL1077
2B2UR,2B2UR 2A MCB B CHAR 2 P 480Y/277
2B3,MOUNTING BARRIER BLACK
2B3.5UM,断路器 B CHAR,2POLE,480Y/277VAC,UL508
2B3/J,保险丝盒、保险丝夹及硬件 QUICK CONNECT
2B30UM,断路器 30A CRT BRKR BCHAR 277VAC UL508
2B30UR,断路器 30A,MCB B CHAR 2PL 480Y/277VAC, UL1077
2B32UM,断路器 32A MCB B CHAR 1P+N 277VAC UL508
