BB500-T6M8X4M10X2 Distribution Block Box
BB500-T6M8X4M10X2 Distribution Block Box Details
500A 2xM10 and 4xM8 Stud Busbar Distribution Block Box - DAIER
BB500-T6M8X4M10X2 Distribution Block Box with M10 and M8 Studs
BB500-T6M8X4M10X2 Waterproof Power Distribution Block Box
BB500-T6M8X4M10X2 Distribution Block Box Wide Application

500A 2xM10 and 4xM8 Stud Busbar Distribution Block Box

Regular price$72.99
Shipping calculated at checkout.

Stud Size

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  • Descriptions
  • Technical Data Sheet
  • Shipping & Returns
  • Reviews


About this item

【Product】- The 12V battery distribution block comprises 1x positive and 1x negative terminal with 6 studs, including 2x 3/8" (M10) and 4x 5/16" (M8) stud terminals for efficient power transmission.

【Rating】- The 12V bus bar box is meticulously rated at 300A for 12V circuits and supports a maximum power supply of 48V, ensuring optimal performance.

【M10 and M8 Stud Terminal】 - The 500A busbar features 4 M8 bolts and 2 M10 bolts, providing secure installation for large-sized terminal connectors and wires.

【Protect Cover & Rubber Gaskets】 - Equipped with rubber gaskets, the wire inlets and outlets of the product ensure protection against dust and water, enhancing stability and safety for wire connections and connectors.

【Application】 - Streamline circuit wiring with the 12V distribution block box, preventing electric short circuits effectively. Ideal for automotive, car modifications, RVs, trucks, marine vessels, boats, and solar energy installations.

Package Includes:

1 x Red Positive Bus Bar

1 x Black Negative Bus Bar


Part NO BB500-T6M8X4M10X2
Connection Type Red for Positive
Black for Negative
Terminal Studs 2 x M10 (3/8”) + 4 x M8 (5/16")
Max Voltage 48V DC/300V AC
Max Continuous Amperage 500 AMP 12V DC
Base & Cover Material Nylon 
Bus Material Copper
Terminals Material Stainless Steel
Overall Dimension  124mm x 86mmx48mm (LxWxH)
Features Bus Bar Box Design & Removable Rubber Gaskets

Technical Data Sheet

Shipping & Returns

Shipping Policy (Full Shipping Details)

Standard Shipping: 7-15 business days.

Expedited Shipping: 3-7 business days (FedEx, DHL, or UPS).

Shipping costs vary by country and are shown at checkout.

PS: Shipping may be delayed during holidays and vacations. We apologize for any inconvenience and appreciate your patience.

Refunds & Returns

Refund Arrival Time: 3-5 working days

Refund Path: return to the original path

Refund Contact Information:


Customer Reviews

Based on 11 reviews
John m

I am currently building a Monte Drag car. I gutted every stitch of wiring out of this car and installed my own fuse box and relays etc. This distribution block was just what I needed to run all my wires for the car. Would definitely buy again.

Ken S

I'm currently converting a camper van and am new to electrical. I ran into the issue that I need different (and larger) connectors for my bus bars. I've installed these and they are working great for housing everything! Would recommend.


I’ve used these on two RV solar systems to collect all sources of power, loads, and grounds (#16 to 2/0 wire size) that I needed to properly and safely install a Bogart solar controller and 2000W inverter.


Just opened this up. Plastic was broken. Otherwise product is intact. I plan on using these on my boat for accessories. Stainless should do pretty good!


Used this to convert my golf cart from lead acid batteries to lithium. Well built, can handle 48 v and not concerned about loose connections again.