13 Way 3Ph 4 Wire Voltage


The Test Terminals Blocks offer easy access for on-site testing of Ammeters, KWH Meters, Maximum Demand Indicators, Trivector Meters, Relays and Instrument Transformers without disconnecting from load and avoid C.T. open circuit problems. Connections for testing can be easily made. The Test Terminal Block therefore becomes an important element of the Metering Solution.

The Test Terminals Blocks are designed for projection mounting with either front or back connection possibilities, designated with FC or BC. The Test Terminal Blocks are for 3 phase 4 wire application for up to 50 A continuous rating at 1000 V and generally conform to IEC 60947-7-1.

The most popular 13 Way TTB has 13 Terminals in total, of which 9 are current terminals and 4 are voltage terminals. The current terminals are separated into groups of 3 with inter-terminal shorting links for short-circuiting of the CT terminals and testing. Whereas voltage terminals are besides 3 current terminals with D Link contact and colour coded knobs RYB to indicate the 3 different phases.

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