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
FL17 & L18 Series Heavy Duty 3/0 AWG – 4/0 AWG Silicone Terminal Boots Fits M12+ Studs
The FL17 & L18 Series fit extra-large wire diameters up to 17mm-18mm (approx. 3/0 AWG – 4/0 AWG) and accommodate massive battery lugs and mounting hardware.
CCI10-25 10 AWG – 4 AWG Silicone Battery Terminal Cover for Alternator Battery Stud and Power Junction Blocks
The silicone battery terminal cover use with wire diameter between 10AWG - 4AWG (6.69-26.93mm²), and use with M10 studs to fit over nut.
CCI25-70 4AWG-2/0AWG Insulator Battery Stud Terminal Cover for 1/4″,5/16″,3/8″ Battery Post
The insulator battery stud terminal cover use with wire diameter between 4AWG-2/0AWG (25-70mm²), and use with 5/8" studs to fit over nut.
CCI50-95 1/0AWG-4/0AWG Silicone Battery Terminal and Lug Protector Boot
This lug protector boot offers convenient and safe access to your vehicle's battery for charging, jump-starting, or maintenance with its durable 250A brass construction and 3/8" stud terminals.
BCP-1K Remote Battery Jump Post Kit with Wire Leads
The battery jump post kit includes 2 x battery posts, 1 x mounting bracket, 1 x set of 4 gauge wires (150A max.), and 1 x set of mounting hardware.
TB-2508 25A 600V 8 Position Dual Row Terminal Strip with M4 Screws
The 8 position dual row terminal strip is a screw-type wire connector with a cover, 25A 600V maximum rating and terminal size is M4 screw terminal.
TB-3506 35A 600V 6 Position Dual Row Terminal Strip with M4 Screw Terminals
The terminal strip is a 6 position dual row of screw-type wire connector with cover, 35A 600V maximum rating and terminal size is M4 screw terminal.
TB-3510 35A 600V 10 Positions Dual Row M4 Screw Terminal Block with Cover
The terminal block is a 10-position dual row of screw-type wire connector with cover, 35A 600V maximum rating and terminal size is M4.
TB-3512 35A 600V Dual Row 12 Position Barrier Strip Terminal Block
The barrier strip terminal block is a 12 position dual row of screw-type wire connector with cover, 35A 600V maximum rating and terminal size is M4.
DB-27 3 Way Power Distribution Block with 1 X 0/2/4 Gauge In 3 X 4/8 Gauge Out
The 3 way power distribution block with 1 X 0/2/4 Gauge In and 3 X 4/8 Gauge Out simplifies and enhances the wiring of your car audio system.
DB-38 4 Way Power Distribution Block with 1×0/2/4 Gauge In & 4×4/8/10 Gauge Out
The 4 way power distribution block with 1×0/2/4 Gauge In & 4×4/8/10 Gauge Out can maximize power distribution capabilities in your vehicle.
DB-43 2 Way Battery Ground Distribution Block
DB-43 2 Way Battery Ground Distribution Block has 1*0/2/4 Gauge AWG In, 2*4/8/10 Gauge AWG Out.
BTP-3-M8 Battery Terminal Adapters M8 Female Thread to SAE/JIS Automotive Posts Knurled Positive & Negative Converter Set
This pair of M8 battery terminal adapters converts female threaded battery connections to standard positive (17-19mm) and negative (15-17mm) automotive posts, featuring a knurled grip, M8 internal threads, and included M8 hex bolts and washers.
BTP-2M-M8 Automotive Battery Post Adapter for M8 Top or Side Terminal Charging Posts
This M8 battery post adapter is made of corrosion-resistant brass to ensure a reliable connection and optimal electrical conductivity for positive and negative standard battery posts.
BT-21 12-Way 8AWG up to 4/0(XL) AWG Gauge Battery Terminal Clamps
The battery terminal clamps available in voltage options of 48V, 36V, 24V, 12V, and 6V, are designed to accommodate different cable sizes (0 AWG, 2 AWG, 4 AWG, 6 AWG, 8 AWG, 10 AWG).
BT-02 Heavy Duty Battery Terminal Connector
The 0/2/4/6/8 AWG Inputs battery terminal connector is designed to organize and connect multiple cables for most models of car audio battery.
BT-09 Marine Battery Terminal End with Wing Nut
The 12V/24V battery terminal end with wing nut is made of brass. Positive: 3/8'' Negative: 5/16'' for top post battery with standard post adapters.
BT-31 4 Way Positive and Negative Car Battery Terminal Connectors
The high-quality car battery terminal connectors feature a 4-way design for multiple wire connections, ideal for SAE / JIS Type A car batteries.
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.