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4M402 Test Block System
Test links are an important accessory for protection, metering & control panels. They enable test technicians to quickly & safely isolate protection relays so that test signals may be injected & system performance verified.
The 4M402 Test Block has been designed as a general-purpose isolation & test signal injection point with 28 independent circuits.
The 4M422 Test Plug employs colour coded 'finger safe' 4mm diameter sockets. Either shrouded or standard 4mm banana plugs may be used to connect test equipment for secondary current injection testing.