Product Overview
The VIOX bar fuse switch disconnector range is designed for low-voltage distribution systems that require switching, isolation, and fuse protection in one integrated device. The series covers BFD1, BFD2, and BFD3 models for rated working currents from 160A up to 800A in AC 50/60Hz systems.
This product family is suitable for cable branch boxes, box transformers, industrial plants, community power infrastructure, and other distribution installations where dependable overload and short-circuit protection are required together with practical switching and maintenance isolation.
The VIOX BFD series is intended for distribution applications where the fuse switch disconnector must provide safe switching and reliable circuit protection in a compact installation format. The series is designed for use in systems where high short-circuit performance and structured wiring access are important.
The current product information highlights screw and hook mounting, screw and V-clamp connection, and models that support either integrated or separate fuse unit operation. These design differences help buyers choose the version that fits enclosure layout, maintenance preference, and operating requirements.
Key Features
- Integrated fuse switch disconnector design for low-voltage distribution systems
- Current range from 160A to 800A depending on model series
- Rated operational voltage up to 690V
- Rated insulation voltage of 1000V
- Rated impulse withstand voltage of 12kV
- High short-circuit capability up to 120kA
- Suitable for AC-21B, AC-22B, and AC-23B use classes
- Compatible with fuse sizes 00, 1, 2, and 3 depending on model
Model Overview
| Series | Models | Rated Current Range | Fuse Size | Degree of Protection |
|---|---|---|---|---|
| BFD1 | BFD1-160, BFD1-250, BFD1-400, BFD1-630 | 160A to 630A | 00, 1, 2, 3 | IP10 |
| BFD2 | BFD2-160, BFD2-250, BFD2-400, BFD2-630, BFD2-800 | 160A to 800A | 00, 1, 2, 3 | IP20 |
| BFD3 | BFD3-160, BFD3-250, BFD3-400, BFD3-630, BFD3-800 | 160A to 800A | 00, 1, 2, 3 | IP20 |
Technical Specifications
| Item | BFD1 | BFD2 | BFD3 |
|---|---|---|---|
| Rated Operational Voltage (Ue) | 690V | 690V | 690V |
| Rated Current Range | 160A, 250A, 400A, 630A | 160A, 250A, 400A, 630A, 800A | 160A, 250A, 400A, 630A, 800A |
| Rated Insulation Voltage (Ui) | 1000V | 1000V | 1000V |
| Rated Impulse Withstand Voltage (Uimp) | 12kV | 12kV | 12kV |
| Mechanical Life | 2000 operations | 2000 operations | 2000 operations |
| Connection Method | Screw & V-clamp | Screw & V-clamp | Screw & V-clamp |
| Installation Method | Screw & Hook | Screw & Hook | Screw & Hook |
| Use Class | AC-21B / AC-22B / AC-23B | AC-21B / AC-22B / AC-23B | AC-21B / AC-22B / AC-23B |
| Standard | IEC/EN 60947-3 | IEC/EN 60947-3 | IEC/EN 60947-3 |
| Rated Short-Circuit Current | 120kA | 120kA | 120kA |
| Rated Short-Time Current (Icw) | 16kA / 1s | 16kA / 1s | 16kA / 1s |
Dimensions
Overall and mounting dimensions will be added after the product drawing has been verified.
Series Differences
The three BFD series support different current ranges, protection levels, and operating preferences. Review the current product data below and confirm the final configuration for your project.
- BFD1 covers 160A to 630A applications with IP10 protection
- BFD2 extends the range up to 800A with IP20 protection
- BFD3 also extends to 800A and supports integrated fuse unit operation
- Optional fuse monitoring, signal switch, and remote control module capability is referenced in the current product data
Applications
Typical low-voltage distribution environments where switching, maintenance isolation, and fuse protection may be required in one device.
- Cable branch boxes
- Box transformers
- Industrial plant distribution systems
- Community electrical infrastructure
- Low-voltage power distribution assemblies
- Panel and enclosure installations requiring fuse switch isolation
Why Choose VIOX Bar Fuse Switch Disconnectors
The current VIOX BFD product data presents a structured range for distributors, switchboard manufacturers, panel builders, and project procurement teams.
- Broad current range from 160A to 800A
- High short-circuit rating for demanding distribution applications
- Multiple series options for different operating preferences
- Compatible with common fuse sizes from 00 to 3
- Designed for IEC/EN 60947-3 applications
- Useful for industrial, utility, and infrastructure projects
FAQ
What is a bar fuse switch disconnector used for?
It is used for switching, isolation, and fuse-based overload and short-circuit protection in low-voltage distribution systems.
What current range does the BFD series cover?
The current product data covers 160A, 250A, 400A, 630A, and up to 800A depending on the model family.
What is the rated voltage of the BFD series?
The current product data lists a rated operational voltage of 690V and a rated insulation voltage of 1000V.
What is the difference between BFD2 and BFD3?
The current product data indicates that BFD3 fuse units are opened or closed integrally, while BFD2 fuse units are operated separately.
Where can this product be used?
It can be used in cable branch boxes, box transformers, industrial plants, community infrastructure, and other low-voltage distribution facilities.
