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An image of a circuit breaker system with a panel and various switches and components.
RELIABLE VACUUM TECHNOLOGY

Siemens Generator Circuit-Breaker Systems

Protect power equipment and optimize power plant operations with Siemens Generator Circuit-Breakers (GCB). Our innovative vacuum technology delivers long-lasting, reliable performance.

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SYNCHRONIZE YOUR POWER PLANT

Protect and optimize power equipment

Siemens Generator Circuit-Breakers ensure that power equipment runs reliably and efficiently. Discover innovative, maintenancefree vacuum switching technology that protects power generators and transformers for reliable long-term performance. Our sustainable solutions reduce carbon emissions while streamlining renewable power generation.

The Siemens GCB product portfolio includes:

• Customizable solutions: Compact, bolton and all-in-one systems offer flexibility for retrofits and new projects.

• Integrated GBC solutions for PSPP applications: Our circuit-breaker technology for pumped storage power plants ensures renewable power plant availability and power grid reliability.

• Sustainable generator circuit breakers: Our low-emissions vacuum technology is SF6-free.

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Siemens generator switchgear solutions are the result of more than 30 years of continuous development, fulfilling the highest technological and quality requirements. The portfolio provides optimized solutions to the challenges of a constantly evolving market for power generation.

HB1 generator circuit breaker system

HB1 generator switchgear

Protect generators and transformers with the HB1 switchgear. Its vacuum technology, backed by 30 years of experience, cuts OPEX by up to 75% and delivers 10,000 maintenance-free cycles. Handles currents up to 6,700 A and 72 kA.
HB1-C generator circuit-breaker system

HB1-C generator switchgear

A unique bolt-on solution for challenging retrofits. The HB1-C generator circuit-breaker's I/L-shape design mounts vertically or horizontally to match existing busbars, saving up to 75% in OPEX.
A promotional image of a generator circuit breaker system with a switchboard and circuit breakers.

HB3 generator switchgear

The world's first SF6-free vacuum generator switchgear for applications up to 110 kA. Save up to 75% on operational expenditure with maintenance-free technology rated for up to 10,000 operating cycles at full nominal current.
Circuit breaker panel with multiple switches and a professional testing device for electrical safety inspection.

HB3-C generator circuit-breaker

The HB3-C is a versatile, customizable bolt-on solution for generator circuit-breakers up to 15 kA. Ideal for retrofits, its compact, SF6-free, and maintenance-free design mounts vertically or horizontally.
Siemens logo.

HIGS generator switchgear

Protect your power unit with HIGS, the compact, all-in-one generator switchgear. Installed directly at generator terminals, it minimizes interfaces and space. This maintenance-free solution is rated up to 5,000 A and 72 kA.
Hydroelectric power station interior with large blue generators and control panels

Pumped storage solutions

Maximize PSPP availability with our integrated GCB solutions. Maintenance-free vacuum technology with a sealed-for-lifetime interrupter delivers 10,000 cycles, reducing OPEX and maintenance effort.
Sleek industrial generator switchgear with clean lines emphasizing advanced safety and electrical system performance.

VB1 generator switchgear

VB1 Generator Switchgear: A versatile, modular solution for paralleled generation units up to 140 MW. Its compact, customizable design is ideal for retrofits. Ensures high operational safety with arc fault testing up to 72 kA.

Improving power plant efficiency and availability

Explore the world of reliable, sustainable, F-gas-free GCBs.

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A circuit breaker system is shown with a generator and a control panel.

Frequently asked questions

What are GCBs used for?

GCBs are used to protect power equipment and optimize operations across the power grid, from power generation to transmission and industrial consumption. Siemens GCBs ensure service continuity, simplify procedures and minimize maintenance costs at power plants.

How can GCBs make power systems more sustainable?

Siemens GCB solutions boost reliability and reduce carbon emissions with SF6-free technology. They streamline operations and maintenance in renewable power generation for more cost-effective solar, hydro, wind and geothermal power.

Discover the possibilities

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