The main function of an mcb is to switch the circuit ie to open the circuit which has been connected to it automatically when the current passing through it mcb exceeds the value for which it is set. Three phase power from the utilities is connected to the main breaker through three phase energy meter.
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3 phase mcb wiring diagram. Wiring diagram book a1 15 b1 b2 16 18 b3 a2 b1 b3 15 supply voltage 16 18 l m h 2 levels b2 l1 f u 1 460 v f u 2 l2 l3 gnd h1 h3 h2 h4 f u 3 x1a f u 4 f u 5 x2a r power on optional x1 x2115 v. Published on jun 3 2017 in this video you will learn about how to wire double pole mcb miniature circuit breaker with wiring connection diagram in english language. By using the the three pole circuit breaker we can control three phase power system and by using the four pole we can control 3 phase 4 wiring system. As you know that we use the double pole mcb circuit breaker as main circuit breaker in our single phase distribution board. The figure below shows schematic diagram for industrial three phase wiring. An mcb or miniature circuit breaker is an electromagnetic device that embodies complete enclosure in a molded insulating material.
Phase 1 l2 l4. Three phase breaker 3 pole 60a double pole rcd double pole mcb and single pole mcbs. Today i am sharing a double pole mcb connection diagram. A complete guide about the 3 phase circuit breaker 3 pole mcb connection installation or wiring connection of 3 phase 3 pole for three phase system in english language. In which i will shown the complete method of wiring of double pole mcb miniature circuit breaker. However i also share diagram about the wiring and instillation of mcb miniature cb and you can also read about those diagram and post by using the following links.
Phase 2 l1 l2 l3 ground when used l1 is always ungrounded l2 motor. The power in the main breaker is then given to various busbars. Learn how to troubleshoot 3 phase induction motor step by step with circuit diagram figure and important points about induction motor star delta connection. Now get hot wire phase from the rcd breaker and connect to all one pole mcb breakers and neutral to neutral bus bar as i shown in the above rcd diagram. In our today electrical wiring installation tutorial we will show how to do a three phase consumer unit installation from utility pole to a 3 phase energy meter 3 phase distribution board and then how to connect single phase three phase loads in a three phase wiring distribution system in home electric supply system. What is miniature circuit breaker mcb.
1 phase 2 phase 4 wire 3 phase line markings l1 l2 l1 l3. For wiring of voltmeter and indicator you need to connect the phase supply from the breaker and neutral wire to neutral connection point.
Gallery of 3 Phase Mcb Wiring Diagram
