HB3-C system without enclosure up to 110 kA

HB3-C system without enclosure up to 110 kA

The compact design of the HB3-C generator circuit-breaker is customizable and offers an ideal solution for retrofit applications as it's maintenace and SF6-free.

HB3C Configurator

About HB3-C system

  • Bolt-on solutions with rated nominal current up to 15 kA
  • Unique horizontal and vertical installation capabilities
  • Common or individual supporting frame design
  • With optional integrated line and earth disconnecting switches
  • Common or individual supporting frame design
Circuit Breakers ratings

How to estimate Generator Circuit Breakers ratings in less than 5 minutes?

July 13. - July 14. 2021

Product information

The most versatile solution for your retrofit application and new projects

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

* Most reliable operating mechanism as per final report number A3-00 from the CIGRE 2012 General Report SC A3.

** R. Renz, D. Gentsch, P. Slade, H. Fink, M. Schlaug, "Vacuum Interrupters – Sealed for Life", 19th Int. Conf. on Electr. Distr. (CIRED), Paper 0156, 21-24 May 2007

Technical Data

Rated
 
 
Voltage (up to)
kV
24
Frequency
Hz
50/60
Power-frequency withstand voltage/across isolating distance
kV
up to 60/70
Lightning impulse withstand voltage/across isolating distance
kV
up to 125/145
Normal current at 40oC ambient temperatures (up tp)
- at 50 Hz
- at 60 Hz
A

15,000
14,250
Short-time withstand current/duration (up to)
- Generator circuit
- Earthing circuits
kA/s

110/3
110/1
Peak withstand current
kA
302
Short-circuit breaking current (up to)
kA
110
Short-circuit making current
kA
302
Flexibility
 
Integrated line disconnecting switch
optional
Integrated earth disconnecting switch on generator side
optional
Integrated earth disconnecting switch on transformer side
optional
Range of pole-center distance
from 750 mm
Type of supporting frame structure
individual and common
Type of installation
vertical and horizontal
News

Get the latest information !

Press release, papers, articles, customer references…
Downloads and Services (Training)

Take advantage of our services

Here you will find important information, documents and training: