DaierTek Car Terminal Block Negative Bus Bar 12V 150A Terminal Block 12V Power Distribution Block M8 Termianl Bus for Automotive
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SKU: 14:200004889#2PCS 6XM6
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Conversions Tech BB150 Negative Bus Bar — 12V/48V, 150A Marine Power Distribution Block
The Conversions Tech BB150 Negative Bus Bar is a high-performance power distribution terminal designed for automotive, marine, and RV systems. Rated for up to 150A DC and 130A AC, this bus bar efficiently consolidates ground or negative connections, ensuring clean, reliable, and organized electrical wiring in harsh environments. Built from copper, stainless steel, and durable thermoplastic, it provides superior conductivity and corrosion resistance for long-term reliability.
With multiple M8 terminal studs and M4 screw terminals, the BB150 offers flexible wiring options and secure connectivity for a wide range of circuits. Its rounded base design and open-area cover make installation simple and safe — ideal for automotive, marine, off-grid, and solar applications.
Key Features
- High Current Capacity: Supports 150A DC or 130A AC continuous operation for heavy-duty power systems.
- 12V–48V Compatibility: Works across automotive, marine, RV, and solar voltage systems up to 48V DC or 300V AC.
- Durable Construction: Made from copper bus plates with stainless steel studs and a flame-retardant ABS housing.
- Flexible Termination: Includes 4 × M8 (5/16”) studs and 6 × M4 screw terminals for various connection types.
- Rounded Corner Base: Unique design provides a cleaner aesthetic and easier wire routing in tight installations.
- 180° Access Cover: Clear protective cover allows wide-angle wire entry for lugs and ring terminals.
- Excellent Conductivity: Nickel-plated copper bus bar ensures stable current flow with minimal voltage drop.
- Weather-Resistant: Corrosion-resistant materials suitable for outdoor, marine, and humid environments.
- CE & RoHS Certified: Meets global electrical and environmental compliance standards.
- OEM Customization: Custom terminal layouts, colors, and labeling available for bulk and branded projects.
Technical Specifications
| Model Name | BB150 |
| Type | Negative Bus Bar / Power Distribution Block |
| Material | Copper Bus Plate, Stainless Steel Terminals, ABS Housing |
| Rated Current | 150A DC / 130A AC |
| Rated Voltage | 48V DC / 300V AC |
| Terminal Studs | 4 × M8 (5/16”) Studs + 6 × M4 (#8) Screw Terminals |
| Dimensions | 170 × 44 × 33 mm (6.69" × 1.73" × 1.30") |
| Weight | 0.15 kg (150 g) |
| Color | Black or Red Base |
| Certifications | CE • RoHS |
| Origin | Mainland China |
Applications
- Automotive electrical systems and battery management
- Marine and boat grounding or negative return circuits
- RVs and campers with multi-circuit power distribution
- Solar and renewable energy setups
- Off-grid, 12V/24V electrical systems
The Conversions Tech BB150 Negative Bus Bar simplifies your power distribution with reliable connectivity, clear wiring organization, and robust construction. Perfect for marine, automotive, and off-grid systems, it ensures efficient grounding and stable current flow under all conditions.
FAQs (Click to Expand)
1. What current and voltage can this bus bar handle?
It supports up to 150A DC or 130A AC continuous current and operates up to 48V DC or 300V AC.
2. What type of terminals does it include?
The BB150 features 4 × M8 (5/16”) terminal studs and 6 × M4 (#8) screw terminals for flexible connections.
3. Can I use this for positive or negative connections?
This model is intended for negative or ground bus connections, but it can also serve as a power junction in low-voltage DC systems.
4. Is the housing flame-resistant?
Yes. The housing is made of flame-retardant ABS thermoplastic for enhanced safety and heat resistance.
5. What makes the design unique?
The rounded base and open-area cover allow 180° wire lug installation and simplify multi-angle connections.
6. Can it be used in marine environments?
Yes. The nickel-plated copper and stainless steel hardware offer excellent corrosion resistance for marine and outdoor use.
7. Is customization or OEM labeling available?
Yes. Conversions Tech offers OEM customization, including logo printing, color options, and packaging for bulk projects.
8. What is the size of the product?
The bus bar measures approximately 170 × 44 × 33 mm (6.69" × 1.73" × 1.30"), compact yet heavy-duty.
9. What’s included in the package?
Each unit includes the BB150 bus bar and a protective clear cover for safety during operation.
10. Why choose Conversions Tech power bus bars?
Conversions Tech bus bars are built using premium conductive materials, meeting CE and RoHS standards for performance, durability, and electrical safety in professional installations.
Why Choose Conversions Tech
Conversions Tech manufactures high-quality electrical components for automotive, marine, and renewable power systems. Our bus bars and power terminals deliver precision engineering, superior conductivity, and trusted safety for every environment.
4 Reasons Pros Buy Direct from Conversions Tech
Headquartered in business-friendly Wyoming, we design, test, and ship every product from inside the United States—delivering genuine “Made-for-America” quality without the big-box markup.
Our in-house team owns every CAD file, mold, and QA station behind our weatherproof boxes, conduit bodies, and power inverters. Vertical control means tighter tolerances, UL-listed safety, and up to 30 % lower cost than private-label imports.
Thousands of SKUs sit ready to go. Orders placed by 2 p.m. ship the same day, keeping contractors, OEMs, and distributors on schedule.
Need a torque spec or an OEM quote at dawn? You’ll speak directly with the Conversions Tech engineering desk—not a script reader—for instant answers, custom kitting, and private-label options.
Bottom line: For rugged, code-compliant electrical solutions shipped fast from a trusted U.S. source, choose Conversions Tech and build it right the first time.
