厦门彬硕.小胡 德国西门子交换机意为“开关”是一种用于电（光）信号转发的网络设备。它可以为接入交换机的任意两个网络节点提供独享的电信号通路。最常见的交换机是以太网交换机。其他常见的还有电话语音交换机、光纤交换机等。
SIEMENS: 3RK 3RA 3RB 3RF 3RG 3RH 3RN 3RP 3RS 3RT 3RV 3RX 3SK 3TC 3TD 3TG 3TH 3TK 3TS 3TX 3UF 3UG 3LD 8WD 6GK 6SE70 6SY 6DD 6RY 6SB 6SL39特价供应
6GK7542-1AX00-0XE0
6GK5202-2BB00-2BA3
6GK5788-1FC00-0AA0
6GK5748-1FC00-0AA0
6GK5907-8PA00
6GK5907-4PA00
6GK5795-1TN00-1AA0
6GK5793-4MN00-0AA6
6GK7343-2AH11-0XA0
6GK1503-3CB00
6GK1500-0FC10