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Merlin Voltage Sensative Battery Isolation Relay 12V

SKU: 04-4101

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Excl. Tax: £35.00 Incl. Tax: £42.00

Devon 4x4

Specialist 4x4 vehicle company

4x4 Accessories & 4x4 Spares

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Product Description


The M-Power VSR is standard fit across numerous specialist vehicle and marine fleets. Easy to install and fully automatic in operation, it is the ideal choice for small vans, bass boats, day boats, patrol cars etc. Multiple VSRs can be connected to charge additional batteries. Perfect as a fit and forget isolator between twin batteries on overland vehicles.

The M-Power VSR is self contained, enclosing the contactor and control electronics. Unlike most other VSRs a short delay timer between battery sensing and switch activation  prevents damage to unit from relay ‘chatter’.

The M-Power VSR can also be used as a Voltage Sensitive Switch. If a load is wired on the unit’s output, it will only receive power when the batteries are being charged – useful if you have heavier loads that should be used only when the engine is running and the charging system is healthy enough to provide power

  • Bi-Directional, zero loss Split Charging
  • Fully automatic operation
  • ‘Connected’ LED indicator
  • Sealed for marine/under hood installation
  • Ignition Protected


Max intermittent rating 140A

Rec Max alternator / charger size 80A

Additional Information

Additional Information

export BEP
Collection Only N/A
Vehicle Make N/A
Vehicle Model N/A


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