Latching Circuit Line Diagram. The diagram of its pins is here. Top wiring permanent magnet latching lighting contactors.
Line diagrams also called schematic or elementary dia grams show the circuits which form the basic operation of the controller. Circuit diagram gated sr latch a gated sr latch is a special type of sr latch having three inputs ie set reset and enable. B1 mcb 5a 3 phase.
Resistors are used as current limiting resistors while the capacitor is used to prevent false triggering of circuit.
The circuit has two buttons one is a push to make which closes when pressed but is otherwise open and the other is a push to break which opens when pressed but is otherwise closed. Current limiting resistors must be used at the bases of bjt transistors otherwise they might burn. After that the main power contactor coil energized due to electromechanical action and this latch contactor poleit applies full line voltage to the motor terminals. The above circuit works as a toggle switch.