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Offering a range of Relay Test Block, Semaphore Indicators, Relay Test System, Switch Fuse Units, etc.

About Us

Nelster Welcon is India's pioneer and the largest manufacturer & suplier of Test Switches, Test Switch, Terminal Blocks, Test Terminal Block, Test Blocks with the widest range to offer. Established in 1978 , we are an ISO-9001 : 2008 certified manufacturing plant offering a range of Test Terminal Blocks, Relay Test Blocks,  Relay Test Plugs,  Semaphore Indicators, Relay Test Systems & Plugs, Changeover Switches, FT test switches, RT test switches, Changeover switches, Switch Dis connector, Test Switches,Test Switch, Terminal Blocks, Test Terminal Block, Air Break Switches, Gang Operated Switches etc. It is our philosophy & commitment to produce and deliver products of highest quality & safety standards at reasonable prices with an enviable service that has helped us in forging sustainable business association with our clients world over.