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  • GCS-II Switchgear — white-background equipment view
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GCS-II Switchgear — white-background equipment view
GCS-II switchgear on a white background, view 2
GCS-II switchgear on a white background, view 3
GCS-II Switchgear — white-background equipment view GCS-II switchgear on a white background, view 2 GCS-II switchgear on a white background, view 3

GCS-II Low-Voltage Withdrawable Switchgear

GCS-II is low-voltage withdrawable switchgear for power distribution, centralized motor control and reactive power compensation. It is intended for three-phase AC systems in power plants, petrochemical facilities, industrial plants and buildings. The series supports main busbar ratings up to 4000 A, with circuit and component selection matched to the electrical scheme.

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Send the model, required ratings, quantity, installation conditions and destination. Include a single-line diagram or specification when available.

GCS-II Switchgear is a low-voltage withdrawable assembly for power distribution and motor-control circuits. Select the functional units, main and auxiliary supplies, busbar ratings and circuit duties as one coordinated configuration.

GCS-II Switchgear Specifications

Electrical Ratings

Parameter Unit Specification
Main circuit rated voltage V AC 380 / 400 / 660
Auxiliary circuit rated voltage V AC 220 / 380 / 400
Auxiliary circuit rated voltage V DC 110 / 220
Rated frequency Hz 50 / 60
Rated insulation voltage V 660 / 1000
Horizontal busbar rated current A ≤ 4000
Vertical busbar rated current A 1000
Busbar short-time withstand current (1 s) kA 50 / 80
Busbar peak withstand current kA 150 / 176
Main circuit power-frequency test voltage V 2500
Auxiliary circuit power-frequency test voltage V 2000
Degree of protection IP IP30 / IP40

Service Conditions

Parameter Condition
Maximum ambient temperature +40 °C
24-hour average temperature ≤ +35 °C
Relative humidity ≤ 50% at +40 °C; up to 90% at +20 °C
Altitude ≤ 2000 m
Installation inclination ≤ 5° from vertical
Installation environment No severe vibration, impact or conditions that corrode electrical components

Available ratings depend on the selected configuration. Provide the single-line diagram, load schedule, system voltage and prospective short-circuit current for selection.

Selection questions for GCS-II

When should a project specify withdrawable units?

Define the outgoing circuit duties, planned maintenance approach and spare-unit requirements. Confirm unit sizes, connection positions, interlocks and handling access for the offered assembly. Withdrawability alone does not establish uninterrupted operation or permission for live replacement.

How should it be compared with fixed switchgear?

Compare equivalent circuit duties, ratings, protection and environmental conditions. GGD fixed switchgear is a different construction example; the fixed versus withdrawable guide sets out the purchasing questions without assuming the two series are interchangeable.

Use the industrial application requirements to define the load schedule. Agree the FAT records and witness scope and include them with the quotation inputs.