Nelster Welcon is India's pioneer and the largest manufacturer of Test Terminal 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, By Pass Changeover switches, Switch Disconnector, 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.

Extensive Product Range

Offering a world class range of products, we have become a popular name in the domain. We use superior quality of raw materials such as phenolic molding compound, ferrous and non ferrous parts, etc to manufacture our range. These are used in control and relay panels, metering cubicles and circuit breaker panels. Our extensive range of products are as follows:

Test Terminal Block
Relay Test Block
Semaphore Indicators
Relay Test System
Switch Fuse Units
Changeover Switches
Disconnecting Switches
Connectors
Universal Test Blocks
Test Winding Terminals.