Generator switchgear HB3

single-phasemedium-voltageinsulated

Siemens HB3 is world’s first and unique generator switchgear taking advantage from SF6-free vacuum switching technology for application up to 13.500 A and short circuit ratings up to 110 kA. HB3 Generator Circuit-Breaker on the way to net zero In designing the Siemens HB3 generator circuit-breaker, we always had one goal in mind: to make it more sustainable in every way possible. So we adapted its technology, established a responsible supply chain management, and found a way to make up for any emissions that we can’t avoid yet. With its single-phase encapsulated design, the HB3 fulfills all requirements for its integration between the generator and the generator step-up transformer (GSUT) on the Insulated Phase Bus (IPB). Optionally, the switchgear can be equipped with series main disconnector, earthing switch on generator side and/ or transformer side, instrument transformers, surge arrester(s) and/ or a start-up disconnecting switch. On the way to Net Zero • We avoid CO2 emissions by using SF6-free technology • We reduce emissions as 95% or our supply chain is locally sourced • We compensate the yet not avoidable emissions with carbon offset projects Save up to 75 % of your operational expenditure thanks to: • Maintenance free vacuum technology with up to 10,000 CO operating cycles at full nominal rated current • Full-spring operating mechanism stated to be the most reliable (CIGRE) way to operate a GCB with lifespan up to 20,000 CO operation • sealed-for-lifetime (CIRED) vacuum interrupter equipment Compact design to optimize the transportation • Enables up to two units in only one standard 40´HC-container • Forklift-ready for effortless erection on site