LOW-VOLTAGE DC POWER DISTRIBUTION
12V–48V DC Busbars & Power Distribution Blocks
DC busbars and power distribution blocks for automotive, marine, RV and auxiliary battery systems. Single and dual layouts are available for 12V–48V DC applications, with high-current models up to 600A.
- SYSTEM VOLTAGE 12V–48V DC · Verify by model
- CURRENT CAPACITY Up to 600A · Rating varies
- TERMINAL LAYOUTS Stud, screw, single and dual
- COVERS AND INSULATION Insulated bases and clear covers
DC Busbar and Power Distribution Block Models
BB1-1 M10/M8/M6 Single Stud Post 12V Battery Power Distribution Block
This single-stud power distribution block handles 80A/150A continuous current in 12-48V DC systems and features M6/M8/M10 terminal studs for versatile wiring.
BB1-1A 250A M8/M10 Stud Positive and Negative Battery Junction Post
The battery junction post is made of 316 stainless steel. It is rated for 250A continuous current in 12V DC, Max 48V DC, terminal studs M8/M10.
BB2-1 80A 12V- 48V DC M10/M8/M6 Dual Stud Power Distribution Terminal Block
The 80A dual stud power distribution terminal block is designed for reliable power distribution in 12-48V DC applications.
BB10-B 12V Power Distribution Block
BB10-B 12V Power distribution block is rated for 150A continuous current in 12-48V DC, 4×M6 terminal studs, and 6×M4 terminal screws.
BB100-T2M6S5 5 Gang Common 100A Mini BusBar with 2 x M6 Studs and 5 x M4 Screws
The 150A mini busbar features a reinforced polycarbonate base and a clear polycarbonate cover and includes 5 terminal screws and 2 terminal studs.
BB100-T4M8-C 4×M8 Stud Terminals 150A BusBar with Spring Washers and Cover
This 150A busbar features 4x M8 stud terminals, tin-plated copper, and UL 94-V0 flame retardant materials for safe and reliable power distribution in demanding applications.
BB100-T5M6C 48VDC 150A Common Mini Busbar with 5×M6(1/4″) Studs
The 48VDC 150A common mini busbar with 5×M6(1/4") studs for convenient connection. Manufactured from solid copper for superior conductivity and durability.
BB150-T1M6S12-RB 48VDC 150A Common BusBar with 1×M6 Stud and 12×M4 Screws
The 48VDC 150A common busbar with cover features a 1×M6 stud and 12×M4 screws and is designed for heavy-duty applications with optimal conductivity and safety.
BB150-T2M6S12-C 150A Dual Insulated Busbar with 2×M6 Studs & 12×M4 Screws
The Dual 12V Insulated Busbar is rated for 150A continuous current in 12-48V DC, terminal studs size M6 and screw size M4.
BB150-T4M8S6-C Copper 150A 12V Bus Bar with 4×M8 Studs & 6 x M4 Screws
The copper 12V Bus Bar is rated for 150A DC continuous current in 12-48V DC with 4×M8 stud terminals & 6 x M4 Screw terminals.
BB150-T5M8-C 150A 48VDC 5×M8(5/16″) Terminal Studs Busbars For Automotive
The 5×M8(5/16") stud terminals busbars for automotive is rated for 150A DC continuous current in 12-48V DC.
BB150-T6M6/M8-C 150A 48VDC 6×M6/M8 Studs Battery Power Distribution Block
The battery power distribution block is rated for 150A DC continuous current in 12-48V DC with 6 terminal studs size M6/M8.
BB150-T7M6-C 150A 48VDC Marine Battery Distribution Block with 7×M6 Studs
The marine battery distribution block is rated for 150A DC continuous current in 12-48V DC, with 7×M6(1/4") studs.
BB250-T2M8/M10 48VDC 250A M8/M10 Dual Studs Busbar Power Distribution Block
The M10 terminal stud dual busbar is rated for 250A in 12-48V DC, 2×terminal studs size 3/8"(M10) and the mounting holes accept #8 (M4) screw.
BB250-T3M10S8-C-2 48VDC 250A Bus Bar Distribution Power with 3×M10 Studs and 8×M5 Screws
The 250A bus bar power distribution block designed for use in a 12-48V DC systems, 3×M10(3/8") terminal studs and 8×M5(#10) terminal screws.
BB250-T3M8S10-C-2 48VDC 250A Power Distribution Block Bus Bar with 3×M8 Studs and 10×M4 Screws
The 250A power distribution block designed for use in a 12-48V DC systems, 3×terminal studs size M8(5/16") and 10×M4(#8) terminal screw.
BB250-T4M8/M10S3-C-2 250A 12-48VDC Battery Busbar with 4×M8/M10 Studs and 3×M4 Screws
The battery busbar with protective cover is rated for 250A in 12-48V DC, 4×M8/M10 terminal studs and 3×M4 terminal screws.
BB275-T4M8/M10S6-C 48VDC 275A Busbar with 4xM8/M10 Studs and 6×M4 Screws
The 48VDC 275A busbar features 4 x M8 or M10 studs and 6 x M4 screws, allowing for easy connection of terminal connectors and wires.
BB250X2-T4M10S3-C 4xM10 250A Dual Row Busbar Power Distribution Block with Positive and Negative
The 250A dual row busbar is rated for 250A in 48V DC/300V AC, 8×M10(3/8") terminal studs, and 6×M4(#8) terminal screw.
BB250X2-T6M8-C 250A 48VDC Positive and Negative Dual Bus Bar with 12×M8 Studs
The 250A positive and negative dual bus bar is designed for use in 12-48V DC systems, 12×M8(5/16") terminal studs ensure efficient power distribution in a variety of environments.
ENGINEERING OVERVIEW
Low-Voltage DC Power Distribution for Mobile Equipment
Busbars in this category are compact connection components for auxiliary DC circuits. The main differences are the number and arrangement of terminals, whether positive and negative connections share one assembly, and how the terminals are protected.
Busbar and Distribution Block Configurations
- Common busbars bring several conductors together on one positive or negative connection point. Available models use different combinations of studs and screws.
- Dual busbars place separate positive and negative rows in one insulated unit, making the two connection paths easier to identify.
- Power distribution blocks pair larger main studs with smaller branch terminals for multiple accessory circuits.
These layouts are used in vehicle auxiliary systems, marine electrical panels, RV battery circuits, and compact off-grid equipment. Some models have covered terminals or insulated bases where the installation calls for additional contact protection.
The catalog includes 12V, 24V, and 48V DC options, with selected models rated up to 600A. Current rating, terminal dimensions, mounting space, and cover design vary by model. Check the individual product specifications before placing a production order; for an OEM enquiry, a part number or drawing helps identify a suitable layout.
Frequently Asked Questions
A DC busbar creates a common connection point between a battery or DC power source and several circuits. It may be used for positive distribution, negative return distribution, or a paired positive-and-negative arrangement.
Selection should begin with continuous current, system voltage, cable size, lug size, terminal quantity, mounting space, and required protection. Terminal count alone does not determine whether a busbar is suitable for the application.
Both products organize multiple electrical connections around a common power source. A battery distribution block often uses a more structured layout with main studs, branch terminals, insulation, or cover options, while a busbar may be a simpler common connection bar.
The requirement depends on the installation. Covered or insulated configurations are useful where cables, tools, loose hardware, or service access could create a risk of accidental contact. Clearance for cable routing and terminal service should also be checked.
Please provide system voltage, continuous current, cable and lug size, main terminal size, branch quantity, mounting dimensions, cover requirement, drawing, and expected order quantity. These details help determine whether a catalog model or a custom layout is appropriate.
Engineering Consulting & Custom Quotes
Submit drawings or specs for Busbar. Receive engineering feedback and quotes within 24 hours.
Applications
Industry applications
- Automotive Electrical 12V/24V switches, panels, and circuit protection for vehicles and fleets.
- Marine Electrical Waterproof switches, marine circuit protection, and outdoor power parts.
- Industrial Control Panel interfaces, limit switches, and cabinet circuit protection.
- Appliance Electrical Compact switches and protection parts for household and portable appliances.
- Audio & Electronics Foot switches, knobs, jacks, and enclosures for guitar pedals and audio gear.
- OEM & Custom Solutions OEM/ODM tooling, laser etching, harness assembly, and private label.