Description
DNA WBFB12 12-Circuit ST Blade Fuse Block with Negative Bus and Cover
A 12-circuit ST blade fuse block with integrated negative bus, clear protective cover, tin-plated copper buses and fuse clips, and support for ATO and ATC blade fuses at up to 100A total and 32V DC, the DNA WBFB12 consolidates multiple branch circuits for marine, automotive, RV, and DC electrical system installations.
Product Overview
The DNA WBFB12 is a 12-circuit ST blade fuse block designed to consolidate branch circuits and eliminate the need for numerous in-line fuse holders in marine, automotive, RV, and other DC electrical systems. The unit features a positive distribution bus and an integrated negative bus for clean and professional wiring management, with tin-plated copper buses and fuse clips providing superior corrosion resistance and conductivity in demanding environments.
The clear protective cover enhances safety while allowing easy visual fuse inspection without removal of the cover. Compatible with ring or snap fork type terminals on M5 positive and negative terminal posts and M4 load terminal posts. Accepts standard ATO and ATC fast-acting blade fuses (sold separately) and supports up to 100A total current at a maximum of 30A per circuit at 32V DC. Suitable for 24-hour circuits. Two label sets and mounting screws are included. Dimensions are 164mm long by 84mm wide by 39mm high.
Features & Benefits
12-Circuit Branch Circuit Consolidation: The WBFB12 consolidates up to 12 branch circuits into a single fuse block, replacing multiple in-line fuse holders with a single organised and professional installation solution.
Integrated Negative Bus: The integrated negative bus allows negative connections from all circuits to be terminated at the fuse block without requiring a separate negative distribution point, simplifying wiring and reducing the number of components required for a complete installation.
Clear Protective Cover for Safe Fuse Inspection: The clear protective cover shields the fuse block from accidental contact and environmental contamination while allowing visual inspection of all fuse positions without removing the cover.
Tin-Plated Copper Buses and Fuse Clips: The buses and fuse clips are constructed from tin-plated copper, providing superior corrosion resistance and electrical conductivity compared to unplated alternatives, suited to marine, outdoor, and high-humidity applications.
Accepts Standard ATO and ATC Blade Fuses: The WBFB12 accepts standard ATO and ATC fast-acting blade fuses, which are widely available in a broad range of current ratings. Fuses are sold separately.
Compatible with Ring or Fork Terminal Types: The terminal posts accept both ring type and snap fork type terminals on the positive (M5), negative (M5), and load (M4) posts, providing flexibility for different wiring termination styles.
Suitable for 24-Hour Circuits: The WBFB12 is suitable for use on 24-hour always-on circuits in addition to switched circuit applications.
Two Label Sets and Mounting Screws Included: Two label sets are included for circuit identification at each fuse position, and mounting screws are included for securing the fuse block to the installation surface.
Wide Application Compatibility: The WBFB12 is suited to marine, automotive, RV, and general DC electrical system applications up to 32V DC.
Technical Specs
| Specification |
Detail |
| SKU |
WBFB12 |
| Brand |
DNA |
| Number of Circuits |
12 |
| Maximum Voltage |
32V DC |
| Maximum Total Current |
100A |
| Maximum Current per Circuit |
30A |
| Bus Material |
Tin-Plated Copper |
| Fuse Clip Material |
Tin-Plated Copper |
| Fuse Type |
ATO and ATC Fast-Acting Blade Fuses (sold separately) |
| Positive Terminal Posts |
M5 |
| Negative Terminal Posts |
M5 |
| Load Terminal Posts |
M4 |
| Terminal Type |
Ring or Fork |
| 24-Hour Circuit Suitable |
Yes |
| Dimensions |
164mm L x 84mm W x 39mm H |
| Application |
Marine, RV, Automotive, DC Electrical Systems |
| Inclusions |
Clear Protective Cover, 2 Label Sets, Mounting Screws |
Compatible With
The WBFB12 is suited to marine, automotive, RV, and DC electrical system applications up to 32V DC. It accepts standard ATO and ATC fast-acting blade fuses (sold separately). Compatible with ring or snap fork type terminals on M5 positive and negative terminal posts and M4 load terminal posts.
Frequently Asked Questions
Are fuses included with the WBFB12?
No. The WBFB12 accepts standard ATO and ATC fast-acting blade fuses which must be purchased separately. Select the appropriate current rating for each circuit based on the load requirements of that circuit.
What is the maximum current the WBFB12 can handle?
The WBFB12 supports a maximum total current of 100A across all 12 circuits combined, with a maximum of 30A per individual circuit at up to 32V DC.
Does the WBFB12 include a negative bus?
Yes. The WBFB12 has an integrated negative bus, allowing negative connections from all circuits to be terminated directly at the fuse block without requiring a separate negative distribution component.
Is the WBFB12 suitable for marine installations?
Yes. The tin-plated copper buses and fuse clips provide superior corrosion resistance suited to marine and high-humidity environments, and the clear protective cover shields the fuse block from moisture and contamination.
What terminal types are compatible with the WBFB12?
The WBFB12 is compatible with both ring type and snap fork type terminals. Positive and negative terminal posts are M5 and load terminal posts are M4.
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