3 Phase Contactor Wiring Diagram Start Stop Pdf. How to do contactor wiring for 3 phase induction motor with 3 pole circuit breaker overload relay nonc push button switches in this tutorial post i will tell you about motor contactor wiring and its 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 230 v h1 h3 h2 h4 optional connection electrostatically shielded transformer f u 6 off on m l1 l2 1 2 stop ol m start 3 start start fiber optic.
See image below for an example of 3 wire control being used to pull in a contactor to start a 3 phase motor. The most common use of 3 wire control is a start stop control. Collection of 3 phase contactor wiring diagram start stop.
They are used in applications which do not require undervoltage protection.
When you press the start button and the stop button is not pressed the 24vdc relay energizes and it pulls in the r1 contactor that feeds three phase power to the motor. For instance when a module is usually powered up also it sends out a signal of 50 percent the voltage and the technician does not know this he would think he. 3 phase motor wiring diagrams electrical info pics. A wiring diagram is a simplified traditional pictorial depiction of an electric circuit.
