Bar Fuse Switch Disconnector
The VIOX bar fuse switch disconnector range is designed for low-voltage distribution systems requiring switching, isolation, and fuse protection in one assembly. The BFD1, BFD2, and BFD3 series cover 160A to 800A applications for cable branch boxes, box transformers, and industrial distribution facilities.
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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.
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
Product Description
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 source product positioning highlights practical installation features, including 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 right version for enclosure layout, maintenance preference, and operating safety requirements.
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 |
Series Differences
The three BFD series are intended for slightly different operating and installation preferences. According to the source page, BFD3 fuse units are opened or closed integrally, while BFD2 fuse units are operated separately. This gives buyers flexibility in choosing the structure that best fits maintenance routines and enclosure access conditions.
- 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 on the source page
Applications
The VIOX bar fuse switch disconnector is suitable for distribution systems where high current switching and fuse protection must be combined in one practical device. It is especially relevant for outdoor and indoor distribution assemblies where maintenance access, loop expansion, and reliable protection performance are important.
- 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 VIOX BFD series gives buyers a structured current range, multiple operating styles, and strong short-circuit performance in one product family. This makes it practical for distributors, switchboard manufacturers, panel builders, and project procurement teams that need repeatable fuse switch solutions across different installation environments.
- 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 series shown on the source page covers 160A, 250A, 400A, 630A, and up to 800A depending on the model family.
What is the rated voltage of the BFD series?
The source page lists a rated operational voltage of 690V and a rated insulation voltage of 1000V.
What is the difference between BFD2 and BFD3?
The source page 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.
Request a Quote
If you are sourcing bar fuse switch disconnectors for switchgear, cable branch boxes, transformer distribution, or industrial power systems, VIOX can help match the correct BFD model based on current rating, fuse size, and operating style. Send your project requirements for product confirmation and quotation support.
