CN
The GGD low‑voltage switchgear is an economical and practical fixed‑type power distribution device, applicable to AC 50 Hz, 400 V rated voltage power distribution systems. Electrical components inside the cabinet are installed in fixed mode. With simple and reliable structural design, it achieves efficient natural ventilation via dedicated heat‑dissipation air ducts. Widely applied in power plants, substations, industrial and mining enterprises, it undertakes core tasks including power distribution, conversion and control. It is a classic power‑distribution equipment featuring high cost‑performance and stable & reliable operation.
This product complies with GB/T 7251, IEC 61439.
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Rated voltage of main circuit (V) |
400 |
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Rated insulation voltage (V) |
690 |
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Frequency (Hz) |
50 (60) |
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Rated current (A) |
Horizontal busbar |
≤6300 |
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Rated short‑time withstand current of busbar (kA/1s) |
50, 65, 80, 100 |
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Rated peak withstand current of busbar (kA) |
105, 143, 176, 220 |
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Power‑frequency withstand test voltage (V/min) |
Main circuit |
2500 |
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Auxiliary circuit |
1760 |
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Busbar |
Three‑phase four‑wire system |
A, B, C, PEN |
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Three‑phase five‑wire system |
A, B, C, PE, N |
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