Glossar

Battery main switch

Einheit A

Kurz definiert

A switch that disconnects a battery bank from the on-board system — for maintenance, longer lay-ups and emergencies. Every battery bank needs such a means of disconnection.

In der Praxis

It belongs in a place that can be reached without tools and without climbing, and is selected according to the system's continuous current — not the starter current, provided the starter has its own path.

Loads that must remain permanently supplied — bilge pump, alarm, gas detector — are deliberately connected before the main switch, but then with their own fuse. Internal contacts burn invisibly over the years: a warm main switch under load is a finding.

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