Vacuum Circuit Breakers 12-40.5 kV — ZN85 / ZW32 / VSG / VF2 Series
XIAOPAI supplies medium-voltage vacuum circuit breakers from 12 kV to 40.5 kV: the ZN85-40.5 indoor withdrawable VCB, ZW32-12 and ZW32-24 outdoor pole-mounted VCBs, and the VSG-12 and VF2-12 indoor VCBs for compact switchgear. All models comply with IEC 62271-100, with mechanical life above 10,000 operations and CE certification for export.
Product Range at a Glance
How to Choose
ZN85-40.5 Indoor Vacuum Circuit Breaker
The ZN85-40.5 (3AV3) indoor vacuum circuit breaker is designed for 40.5 kV three-phase AC 50/60 Hz systems. It serves mining companies, power plants and substations for protection and control of medium-voltage feeders, transformers and motor circuits. The withdrawable design allows the breaker truck to be racked out for inspection and maintenance without de-energising the whole panel.
Rated voltage: 40.5 kV
Rated frequency: 50/60 Hz
Three-phase AC
Withdrawable truck type for indoor switchgear
Vacuum interrupter: no oil, no SF6, minimal maintenance
ZW32-12 and ZW32-24 Outdoor Pole-Mounted VCB
ZW32 series VCBs are mounted on distribution poles for overhead line and rural network protection. The sealed outdoor enclosure resists rain, dust and condensation, and the integrated current transformers support protection and metering. ZW32-12 covers 12 kV networks, ZW32-24 covers 24 kV.
ZW32-12: 12 kV outdoor pole-mounted
ZW32-24: 24 kV outdoor pole-mounted
Sealed housing for outdoor service
Used for line sectionalising, transformer protection and rural distribution automation
VSG-12 and VF2-12 Indoor VCB
VSG-12 is built for compact switchgear integration where panel depth is limited. VF2-12 uses a modular design so the same breaker frame fits several cubicle layouts. Both are rated 12 kV and suit industrial plant distribution, commercial building substations and infrastructure projects.
Technical Parameters
Applications
Utility substations and municipal distribution networks
Power plants and industrial plant switchgear
Mining operations
Commercial building and data centre distribution rooms
Renewable energy step-up and grid interconnection
Railway and transport infrastructure
Vacuum Circuit Breaker vs Load Break Switch
For 12 kV load switching with fuse protection, see the FZRN12/25-12D vacuum load break switch-fuse combination:
https://www.cnxiaopai.com/circuit-breaker/98.html
Matching switchgear available: https://www.cnxiaopai.com/sys-pd/25.html
FAQ
What voltage ratings do XIAOPAI vacuum circuit breakers cover?
12 kV, 24 kV and 40.5 kV, in indoor and outdoor designs.
Which VCB is for outdoor pole mounting?
ZW32-12 (12 kV) and ZW32-24 (24 kV).
Which VCB suits a 40.5 kV indoor substation?
ZN85-40.5, an indoor withdrawable VCB rated 40.5 kV.
What standard do XIAOPAI VCBs meet?
IEC 62271-100, with CE certification and full type and routine test reports for export.
What is the mechanical life?
Above 10,000 operations on standard models.
Vacuum circuit breaker or load break switch — which do I need?
A VCB interrupts both load and fault current and can reclose after a fault. A load break switch handles load current and relies on fuses for faults. For 12 kV load switching, see the FZRN12/25-12D at https://www.cnxiaopai.com/circuit-breaker/98.html
Can you supply matching switchgear?
Yes — high-voltage and low-voltage switchgear cabinets, IEC 61439 compliant. See https://www.cnxiaopai.com/sys-pd/25.html
What is the MOQ and lead time?
MOQ 1 set. Lead time confirmed per configuration — contact us for a quotation.
Get a Quote
Not sure which VCB fits your system? Send us your system voltage, rated current and indoor or outdoor requirement — we size the unit and quote within 24 hours.
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For 12 kV load switching with fuse protection, see the FZRN12/25-12D vacuum load break switch.
