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SF6 Load Break Switches
FZW28-12 Boundary Load Break Switch
The FZW28-12 is an outdoor pole-mounted boundary load break switch (also called sectionalizer) combining SF6 insulation, vacuum interrupter, and an intelligent boundary controller. Automatically detects and isolates customer-side faults, protecting the upstream distribution network.
Key Features
- 12kV rated voltage, 630A rated current
- Three-phase SF6 gas-insulated sealed box
- Built-in vacuum interrupter for fault breaking
- Boundary fault controller with CT
- Auto-detection of single-phase ground faults
- GSM/GPRS fault notification to operators
- Mechanical life: 10,000 operations
- Electrical life: 10,000 operations at rated current
Technical Specifications
| Rated Voltage | 12 kV |
| Rated Current | 630 A |
| Rated Frequency | 50 Hz |
| Rated Peak Withstand Current | 50 kA |
| Rated Short-Time Withstand Current | 20 kA / 4s |
| Rated Short-Circuit Making Current (Peak) | 50 kA |
| Mechanical Life | 10,000 operations |
| Power Frequency Withstand (Wet) | 34/35 kV |
| Power Frequency Withstand (Dry) | 42/49 kV |
| Lightning Impulse Withstand | 75/85 kV |
| SF6 Gas Pressure | 0 MPa (sealed) |
| Contact Gap | 8 ± 1 mm |
| Closing Time | <300 ms |
| Opening Time | 18-45 ms |
Applications
Urban and rural distribution networksGrid boundary point automationIndustrial/mining distribution protectionCity grid and rural grid modernization
Standards Compliance
IEC 62271-103GB/T 10963
Reply within 12hISO / CE / CCC CertifiedOEM Available
Frequently Asked Questions
What is the rated voltage of the FZW28-12 Boundary Load Break Switch?
The FZW28-12 Boundary Load Break Switch has a rated voltage of 12 kV. Please refer to the technical specifications table above for complete electrical ratings.
What is the lead time for FZW28-12 Boundary Load Break Switch?
Standard lead time for the FZW28-12 Boundary Load Break Switch is approximately 30 days. Larger quantities or custom configurations may require additional production time. Contact our sales team for a precise delivery schedule.
Can the FZW28-12 Boundary Load Break Switch be customized for OEM projects?
Yes, NAIJI Electric offers OEM and custom manufacturing for the FZW28-12 Boundary Load Break Switch. We can adjust specifications, branding, and configurations to meet project-specific requirements. Minimum order quantities apply.
What standards does the FZW28-12 Boundary Load Break Switch comply with?
The FZW28-12 Boundary Load Break Switch is designed and tested in accordance with IEC 62271-103, GB/T 10963. All products undergo rigorous factory testing before shipment.
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