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Nelster Welcon
‘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 manufactu Read More
Relay Test Plug
Nelster Welcon offers a Relay Test Plug. This facilitates easy in-situ, on-load testing of relays, metering and control panels without disrupting load circuit. Also it is easy and safe for technicians read more
Relay Test Block and Relay Test Plug
Relay Test Plug is a multi finger Test Plug when inserted, open circuits the contacts in the Test Block. The Test Plug consists of 28 nos. 4 mm. dia. sockets. Each socket corresponds to the numbered c read more
Semaphore Indicators
Semaphore indicators are designed to perform on Instrumentation. Control & Relay Panel's mimic diagram. It indicates the 'open' or 'close' position of the circuit Breaker. PT ON / OFF switch, Earth Sw read more
Relay Test Blocks
Relay Test Blocks produced with many features, The housing is robust, high grade phenolic moulding, capable of long, trouble free performance in varied climatic conditions. It is designed and manufact read more
Test Terminal Blocks
Test Terminal Blocks is used for testing / calibration of electromechanical and electronic polyphase integrated meters, protective relays, etc. It is tested without disrupting the existing load circui read more
