Hi Daniel this is dave from the UK. Regarding the replacement triac for the Trend T3 router, sourcing the new part began with an internet search using the component reference details. This identified voltage, current and package requirements. With this info to hand I collected the part from a local branch of Maplins in Liverpool. I feel sure NTE Electronics will have something that can be safely used. In passing the triac for the 3/4 HP T3 was a 6 amp device. You will be looking for a much larger current capacity so it is more than likely the cost will be proportionately greater.