Distribution and protection

Busbars for 12 V and 24 V.Distributing positive and negative cleanly.

A busbar is a common connection point for several cables. Instead of stacking cable lugs on a battery terminal, positive or negative leads run to a copper bar. The electrical system becomes clearer, contact resistance drops and faults are found faster.

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Busbars for 12 V and 24 V: distributing positive and negative cleanly
  • Positive and negativebars for both poles
  • up to 250 Awith the Power Install System
  • Tinned copperprotected against corrosion

Positive busbar and negative busbar

The negative busbar brings all return conductors from consumers and charging sources together at one point. If the battery monitor's shunt sits between this bar and the negative terminal, it measures every current flowing into or out of the battery.

The positive busbar distributes current to the outgoing circuits. It always belongs behind a main fuse, and every outgoing circuit needs its own fuse matched to the cable cross-section. A cover protects against short circuits from tools or loose parts.

Positive busbar and negative busbar

What matters when choosing

  • Continuous current: the bar must carry the total current of all consumers and charging sources running at the same time, with a margin.
  • Stud and screw size: it must match the hole of the cable lugs, otherwise the contact area is too small.
  • Number of terminals: plan free positions for later extensions.
  • Material: tinned copper conducts well and is protected against corrosion, which matters in humid and salty air.
What matters when choosing

For high currents: systems instead of single parts

Where main switches, fuses and busbars sit close together, a bolted system pays off. In the philippi Power Install System, copper links connect the components directly without individually made-up cables, rated up to 250 A.

For high currents: systems instead of single parts

Matching products.From our range.

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Busbar MSB 4 Busbar MSB 4€59,00View › Busbar MSB 6 Busbar MSB 6€69,00View › Busbar MSS 9 Busbar MSS 9€59,00View › Busbar PowerBar SMS 2104 Busbar PowerBar SMS 2104€146,01View › MaxiBus Busbar SMS 2127 MaxiBus Busbar SMS 2127€52,06View › Busbar SMS 12 Busbar SMS 12€23,09View › Double busbar SMS14 Double busbar SMS14€39,39View › Collection point PowerPost Plus 2101 Collection point PowerPost Plus 2101€40,16View ›

Categories.The full range.

Frequently asked questions.Short answers.

Why do I need a negative busbar?

It bundles all return conductors at one point. Only one cable then sits on the negative terminal, and a battery monitor with shunt can capture all currents.

Does a positive busbar need a fuse?

Yes. A main fuse belongs between the battery and the positive busbar, and every outgoing circuit needs its own fuse matched to the cable cross-section.

What size do I need?

What counts is the total current, the stud size of the cable lugs and the number of circuits. Plan a margin for current and for later connections.

Why tinned copper?

Copper conducts very well, and the tin layer protects against oxidation. This keeps contact resistance low even after years on board.

Read more.In the philippi Academy.

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