The present invention relates to an induction motor starter, particularly a star delta starter comprising an improved component called star delta changer that reduces the size, cost and maintenance of the star delta starter by replacing conventional two separate star contactor and delta contactor in it and gives efficient result. The use of star delta changer in the induction motor starter reduces the number of components, cost up to 50%, maintenance up to 50% and size up to 50% as compared to the existing motor starters. The improved motor starter can also be used as Direct On-Line (D.O.L) Starter and the installation of said motor starter is very easy.
展开▼
