Red and black 150A bus bars side by side with clear covers

12V bus bar red base with 2 x M6 studs and 6 screw terminals

Black 12V bus bar with clear cover and cap nuts fitted

6 way bus bar showing clear cover and black cap nuts

12V bus bar red base with 2 x M6 studs and 6 screw terminals, cover removed

Blue Bar 12V Bus Bar 150A – 2 x M6 Studs & 6 x Screw Terminals with Clear Cover (Red / Black)

Price range: $15.00 through $28.00 inc gst

A compact 150A 12V bus bar for tidy power and earth distribution in 4WDs, caravans, campers and boats.

- 2 x M6 studs for main feed cables + 6 x M4 screw terminals for branch circuits
- Rated 150A DC, up to 48V DC
- Tin-plated copper bus, clear cover and hardware included

Red (positive) or black (negative) base

Product Option

Clear

SKU: N/A Categories: 12/24v Products & Access, Dual Battery Products, Busbars Tags: 12V bus bar, 150A bus bar, 4WD wiring, Blue Bar, bus bar, busbar, caravan wiring, dual battery, earth bus bar, M6 stud, power distribution

Brands:Blue Bar Industries

Brand: Blue Bar Industries

Description
Additional information

12V Bus Bar – 2 x M6 Studs, 6 Screw Terminals

This 12V bus bar gives you one clean, common connection point instead of a stack of lugs crammed onto a battery terminal. Bring your main positive or earth cable in on one of the M6 end studs, then run up to six smaller circuits off the M4 screw terminals — lights, fridge, USB outlets, radio, compressor feeds and the like. Rated to 150A DC, it suits 12V and 24V systems in 4WDs, utes, caravans, campers and boats.

Choose a red base for positive distribution or black for a negative/earth bus — or run one of each for a neat, colour-coded auxiliary setup.

Key features

Stud terminals	2 x M6
Screw terminals	6 x M4
Current rating	150A DC
Max voltage	48V DC
Bus material	Tin-plated copper
Cover	Clear, with 2 x cap nuts
Mounting	2 x mounting holes
Base colour	Red or Black
Dimensions (L x W x H)	120 x 20 x 42.5mm
Includes	Bus bar, clear cover and hardware
SKU	BB-BB2xM66xScr

What this 12V bus bar suits

Auxiliary and dual battery systems in 4WDs and utes
Caravan, camper trailer and canopy power distribution
Common earth/negative point for multiple accessories
Boat and marine 12V wiring
Solar and battery box builds

Fit an appropriately rated fuse or circuit breaker on each branch circuit, and a main fuse on the feed to the positive bus.

Built to spec. Made for the track.

══════════ FAQ (on-page) ══════════
Q: What is a 12V bus bar used for?
A: A 12V bus bar joins several circuits to one common positive or negative connection point. It keeps wiring tidy and stops you stacking multiple lugs on a battery terminal.

Q: What current is this bus bar rated for?
A: This bus bar is rated to 150A DC. Your main feed cable, fuse and total connected load should all sit within that rating.

Q: What size terminals does it have?
A: It has 2 x M6 studs and 6 x M4 screw terminals. The M6 studs take your main feed or larger cables on lugs, and the M4 screws take smaller branch circuits on ring or fork terminals.

Q: Does it work on 24V systems?
A: Yes, it suits 12V and 24V DC systems, with a maximum rating of 48V DC.

Q: Should I use red or black?
A: Use red for positive distribution and black for negative or earth. Many setups use one of each for clear, colour-coded wiring.

Q: Does it come with a cover?
A: Yes, it comes with a clear protective cover held in place by two black cap nuts. The cover helps prevent accidental shorts while letting you see the connections.

Q: What is the bus bar made from?
A: The bus is tin-plated copper, which conducts well and resists corrosion. It sits on an insulated base and comes with a clear cover and hardware.