Switchgear Components


In an electric power system, switchgear is the combination of electrical disconnect switches, fuses or circuit breakers used to control, protect and isolate electrical equipment. Switchgears are used both to de-energize equipment to allow work to be done and to clear faults downstream. This type of equipment is directly linked to the reliability of the electricity supply.

A switchgear has two types of components:
Power conducting components, such as switches, circuit breakers, fuses, and lightning arrestors, that conduct or interrupt the flow of electrical power
Control systems such as control panels, current transformers, potential transformers, protective relays, and associated circuitry, that monitor, control, and protect the power conducting components
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Moulded Case Circuit Breaker (MCCB)

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Air Circuit Breaker (ACB)

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Earth Leakage Circuit Breaker (ELCB)

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Isolator / Disconnector

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Miniature Circuit Breaker (MCB)

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Under Voltage Relay (UVR)

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Contactor

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Latching Relay

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Three Phase AC Filter Capacitor