generator switchgear / medium-voltage / compact / vacuum

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generator switchgear generator switchgear - HB3-C


  • Electrical characteristics:


  • Configuration:

    compact, vacuum

  • Applications:

    for generators

  • Other characteristics:


  • Current:

    Min.: 0 A

    Max.: 100,000 A

    15,000 A

  • VAC:

    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

Other SIEMENS Medium-voltage – Power distribution products

Medium-voltage systems