tb30系列隔离开关适用于交流50hz,额定工作电压至400v及以下的配电或电动机网络中作为不频繁接通与分断电路或电气隔离（1000a以上只做电气隔离）之用。
开关采用玻璃纤维增强不饱和聚酯树脂制造外壳，有很高的介电性能，防护能力和可靠的操作安全；其操作机构是弹簧蓄能，瞬时释放的加速机构，瞬时接通和断开多断点触头结构，极大的提高了各项电气性能和机械性能。
tb30 series isolation switch is designed for use in distribution and electromotor network of ac50hz 400v,to close and break circuit infrequently or as electric isolation.
tb30 adopt glass-fibres reinforcing unsaturated polyester resin manufacturing shell,which has high dielectric performance,protective capability and safe operation.the operation mechanism is an elastic accumulating and acceleration instant-release device,which makes instant on and off the double breakpoint contact greatly increase both electric and mechanical performance.
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