• Nelster Welcon

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 circuit. It is housed in a high-grade phenolic moulding with integrally moulded barriers. It offers protection against flashover between terminals. All terminals are high quality brass, duly nickel plated and have 3.40 mm hole for cable entry and M3 screws for clamping. M4 brass studs with washers and nuts are provided at the rear, in rear connection types. Sealing hole provided on the cover securing knobs and studs, prevents unauthorised access. Each group of current terminals consist of three terminals with interconnecting screws or links for injecting current from a portable test set or to short circuit current transformer secondaries. These TTBs are available in screw or link type, for front or back connected applications.