The invention specifies a disconnector for decoupling a load from a supplying AC voltage network. The disconnector comprises at least one disconnector stage having a series circuit comprising at least two reverse-conducting gate turn-off thyristors which are connected cathode to cathode. The gate turn-off...http://www.google.com.au/patents/US6166456?utm_source=gb-gplus-sharePatent US6166456 - High-speed disconnector using semiconductor technology
