Components of Control Panel

8/10/2019 Components of Control Panel

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What is a control panel? What are the components in

a control panel?

CONTROL PANELControl panel is a cabinet which contains electrical

components to control the motors and equipments.
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CABLESCables are used for the interconnection. Two types ofcables are used. Power cable and control cable.1. Power cables (which is used to connect the motor to

panel component and panel to main supply)2. Control cables (which is used to connect the controlcircuits)
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BUS BARIncoming supply is connected to bus bar and distributedfrom bus bar. It is normally made by Aluminum.
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MCB (Miniature Circuit Breakers)MCB is a protecting device. It is used before the feeder. Thisshould be selected according to the capacity of the feeder
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MCCB (Mould Case Circuit Breaker)In most of the cases the MCCB used as an incomer forhigher capacity feeders for better protection
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ELCB (Earth Leakage Circuit Breaker)The ELCB is also known as RCCB. The device used for theprotection against the earth leakage current and residualcurrent. It should be fixed before the incomer
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INCOMERThe basic supply will connected to this incomer. It alsocalled as SFU(Switch Fuse Unit). It contains one handle withfuse unit. Once it is turned ON the supply will pass to the

next stage through fuse if any major fault occurs in sidepanel board, it will trip and it isolate supply.
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SELECTOR SWITCHSelector is switch is used for ON/OFF purpose and forselecting the mode of operation like auto/manual.
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Starters are used for starting the motors safely. Mainly twotypes of starters are there. DOL starters and Start to delta.Dol starter is enough for the motors with power less than 10

hp.
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OVER LOAD RELAYOver load relay is for the protection of motor from the overload. It senses the load current and trips if it exceeds thelimit. Current limit has to be set manually. It should be 80%

of thefull load current.
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TIMER

Operation of timer is similar to relay. But a delay is there for

actuation. We can set the time delay manually according toour requirement. It is very much essential for start to delta

conversion.
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CONTACTORContactor is an essential component in the control panel. Itactuates when the signal from the controller (PLC, Relaylogic) comes. It is similar to relay. It is costlier than relay. It

is used for a higher load.
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Panel omponents

Relays

Stack Lights

Cables

Wireway
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Circuit Breaker

Din Rail

Installation Products

Marking Equipment

Motor Contactors
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Motor Overloads

Mounting Material

Pilot Lights

Pluggable Connection Solutions

Power Conditioners
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Power Supplies

Push Buttons

Signal Towers

Switches

Terminal Blocks
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Components of Control Panel