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  3. Medium-voltage switchgear
  4. Siemens Medium-voltage – Power distribution

Generator switchgear HB3-C

generator switchgear
generator switchgear
generator switchgear
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Electrical characteristics
compact, vacuum
for generators
Other characteristics
Primary current

Min.: 0 A

15,000 A

Max.: 100,000 A


Min.: 0 kV

Max.: 24 kV


Bolt-on solutions with rated nominal current up to 15,000 A Unique horizontal and vertical installation capabilities Common or individual supporting frame design With optional integrated line and earth disconnecting switches Save up to 75% of your OPEX by selecting vacuum technology With its HB3-Compact Siemens provides an unique generator circuit breaker solution to the most challenging constraints. It offers one of the highest level of customization: The HB3-C can be mounted either vertically or horizontally, its phase-to phase spacing and phase height axis can be adjusted to match perfectly the existing busbar connection points. Optionally, the circuit-breaker can be fitted with integrated line disconnecting switch and earth disconnecting switch on generator side and/or on transformer side. A compact design that meets all requirements: • Common or individual supporting frame design • Vertical or horizontal installation • Maintenance free vacuum technology with up to 10,000 operating cycles at full nominal rated current • Features full-spring operating mechanism stated to be the most reliable* way to operate a GCB with lifespan up to 20,000 operation • Equipped with sealed-for-lifetime** vacuum interrupter • Simplified footprint without dynamic forces during switching operations that facilitates designing and sizing of the GCB supporting structure • Effortless on-site erection thanks to forklift-ready design or retractable wheels • Can be delivered with integrated line disconnecting switch and earth disconnecting switch on generator side and / or transformer side



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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.