Bussmann 12BDGHA40 Medium Voltage Air Fuse-Link, 40A, 12kV Back-Up
The Bussmann 12BDGHA40 is a medium voltage air fuse-link rated 40 A at 12 kV AC, engineered for back-up protection of primary side transformers in fuse switch combination units, fuse bases, and fuse switches. This cylindrical, bolt-on fuse-link measures 359 x 50.8 mm and uses a silver fusible element for stable, repeatable time-current performance. Built to British Standard (BS) with an integrated striker for mechanical trip indication, it delivers dependable overcurrent protection in demanding medium-voltage distribution applications.
Key Features
- Amperage Rating: 40 A rated current for reliable back-up overcurrent protection.
- Voltage Rating: AC 12 kV medium-voltage rating suited to primary-side transformer protection.
- Dimensions: 359 x 50.8 mm cylindrical fuse-link body sized for standard fuse bases, fuse switches, and combination units.
- Durable Construction: Bolt-on, single-barrel cylindrical design with a silver fusible element for consistent, repeatable time-current characteristics.
- Interrupt Rating: 40 kAIC interrupt rating for high fault-current withstand.
- Back-Up Class: Class back-up fuse-link construction for coordinated primary-side transformer protection.
- With Striker: Integrated striker pin provides mechanical trip indication and can operate tripping mechanisms in fuse switches.
- Resistance: 21.8 ohms rated resistance.
Certifications & Compliance
- Manufactured to British Standard (BS)
Technical Specifications
- Application: protection of primary side transformers | used in fuse switch combination units, fuse bases and fuse switches
- Barrels: 1
- Class: Class back-up
- Compliances: Contact factory
- Construction Type: Bolt-on
- Element: Silver
- Fuse Shape: Cylindrical
- Installation Technique: Air
- Interrupt Rating: 40 kAIC
- Packaging Type: Standard
- Product Length Depth: 359 mm
- Product Weight: 2100 g
- Rated Frequency Max: 50 Hz
- Rated Frequency Min: 50 Hz
- Release Characteristic: Other
- Resistance: 21.8 ohms
- Standard: British Standard
- Utilization Category: Other
- Voltage Type: AC
- With Striker: Yes
Typical Applications
- Primary-Side Transformer Protection
- Fuse Switch Combination Units
- Fuse Bases and Fuse Switches
- Medium-Voltage Distribution Systems
- Industrial and Utility Power Distribution
Why Bussmann?
Bussmann fuse-links are built with silver fusible elements and bolt-on cylindrical construction to deliver consistent, repeatable performance under fault conditions. Manufactured to British Standard (BS) with a 40 kAIC interrupt rating and an integrated striker for mechanical trip indication, the 12BDGHA40 is engineered for code-compliant, reliable back-up protection in medium-voltage transformer and switching applications.
Manufacturer Resources
Product Specs
- Amperage Rating:
- 40 A
- Barrels:
- 1
- Class:
- Class back-up
- Compliances:
- Contact factory
- Construction Type:
- Bolt-on
- Element:
- Silver
- Fuse Indicator:
- With Striker
- Fuse Shape:
- Cylindrical
- Installation Technique:
- Air
- Interrupt Rating:
- 40 kAIC
- Packaging Type:
- Standard
- Performance Cat According To Iec 60282 1:
- Back-up
- Product Height:
- 50.8 mm
- Product Length Depth:
- 359 mm
- Product Weight:
- 2100 g
- Product Width:
- 50.8 mm
- Rated Frequency Max:
- 50 Hz
- Rated Frequency Min:
- 50 Hz
- Release Characteristic:
- Other
- Resistance:
- 21.8 ohms
- Standards:
- British Standard
- Utilization Category:
- Other
- Voltage Rating:
- 12 kV
- Voltage Type:
- AC
- With Striker:
- Yes
- Product Group:
- Fuses
- Department:
- Electrical
- Product Subgroup:
- Other Fuses
- Product Type:
- Fuse
- Product Details:
- Fuse