NELSTER WELCON is India's pioneer and the largest manufacturers and exporters 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, Test Switches, 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.
We have also Exported in This countries UK, America, Africa, Europe, Singapore, Malaysia, Thailand, Oman, Egypt etc.
Facilitate easy testing
High electrical strength
Facilities easy in - situ, onload testing of Relays, Metering and Control Panels without disrupting load circuit.Read More
Semaphore Indicators are designed to perform on instrumentation, control & relay panel's mimic diagram.Read More