We would like to introduce our self as leading suppliers of ONLINE UPS Tested PCBs. Generally Online UPS Cards are dived in to four or five cards namely Power Supply card, Mother card, Driver card or Driver cards (2 Nos. or 4 Nos.) and Annunciations card. We have to wire all the cards together to make an Online UPS.The wiring process is more laborious and time consuming. More wiring means chances of more mistakes also possible. Mistakes may coast you more like IGBT failures and time. The designer is a graduate Engineer in Electrical and Electronics with 29 years of experience in UPS/Inverter. From the experience and difficulties gathered from the production of Online UPS by wiring more number of cards, we decided to make a single card for Online UPS from 3 KVA to 40 KVA Single Phase and 9 KVA to 120 KVA Three Phase.