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Key components and their roles:
Power Supply & Protection:
3P MCB 400V 3-Phase: Provides overcurrent protection for the 3-phase motor circuit.
2P MCB 100-240V 1-Phase: Provides overcurrent protection for the control circuit.
Motor Control:
Contactor: An electrically controlled switch that connects or disconnects the 3-phase power to the motor based on the control circuit's signals.
Thermal O/L Relay: Provides overload protection for the motor, disconnecting power if the motor draws excessive current.
Control Inputs & Indicators:
Start/Stop Pushbuttons: Manual controls for initiating and halting motor operation.
Selector Switch M A (Automatic M Manual): Allows selection between automatic (controlled by float switch) and manual (controlled by pushbuttons) operation modes.
Float Switch: Senses water levels and automatically controls the pump in automatic mode.
Trip Indicator: Illuminates when the thermal overload relay has tripped, indicating an overload condition.
On Indicator: Illuminates when the motor is running.
Motor:
3-Φ Water Pump Motor: The primary load, driven by the 3-phase power supply and controlled by the circuit.
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