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140a split charge voltage sensitive relay - this is equivalent to 0-727-33

This simple device allows the charging of two separate battery banks from a single charging source such as vehicle alternator with no risk of flattening your battery bank. By sensing the main battery voltage, the VSR (voltage sensitive relay) will only connect the secondary bank to the source when the first bank is fully charged and is 13.7V or over and will cut out if the main bank falls below 12.8V. This ensures that secondary bank can never drain the main bank. Dual sensing allows the unit to sense the voltage of both the batteries that it is connected between. If either battery is receiving a charge the VSR will activate. This allows the charging of the second battery from an external battery charger or second charging source.


The VSR can handle charging currents up to 140A with zero voltage drop, no moving parts and encapsulated design makes it suitable for marine applications as well as split charging systems in vehicles.


- Charges two x 12V batteries from one engine
- 140 amps rating
- Automatic control
- Dual Sense - Allows secondary charging source on the auxiliary battery bank
- Eliminates draining from starter battery
- Protects sensitive electronic equipment from harmful engine start up spikes
- Compact size
- Easy to install
- Waterproof


- 140a 12v VSR
- Instructions
- 12v
- 140a
- LED indicator
- CE approved
- Relay cuts in at 13.7v and cuts out at 12.8v
- Dimensions L x W x H - 68mm x 54mm x 68mm

12v Split Charge Relay VSR 140a Equivalent 0-727-33 for Campervans

SKU: DC17.8
£35.99 Regular Price
£33.47Sale Price
  • Returns are accepted if the item is returned within 30 days in the same condition that it was sent out. The buyer pays for return postage and ensures that the item is well packaged for return shipping

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