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Dual Battery Solid State Switch
Product Code: DB50ASSS R01
Model: DB50ASSS R01

Product Information Technical Notes Product Documents Print
Product Information
  • 50 Amp continuous rating with intermittent capability of 100 Amp
  • Easy to install - Only three connections (main bat pos, aux bat neg & earth)
  • Intelligent microcontroller operation
  • Full short circuit protection
  • Over current trip with auto reset
  • Automatic switch ON when vehicle voltage is more than 12.8V
  • Automatic switch OFF when vehicle voltage is less than 12.8V
  • No moving parts to wear out
  • No contacts that could burn
  • One minute turn ON timer
  • Weatherproof
  • Can be mounted in the engine compartment
  • Integrated surge protection
  • 1 Year warranty
Technical Notes


Input voltage:9VDC to16VDC (12VDC nominal)
Continuous current:50 Amp +/-10%
Voltage drop: 0.15V typically at 20A

: 0.40V maximum at 50A
Short circuit shutdown current:Approximately 100 Amp
Under voltage switch OFF: Ignition <12.8V for >2 seconds
Turn ON delay:60 seconds for Ignition > 12.8V
Over current turn OFF time:60 seconds before auto turn ON again

Operating & Connecting Instructions

  • Earth unit to vehicle chassis and connect to negative terminal of vehicle battey using 1.5mmsq wire
  • Connect "Main Bat�terminal to positive terminal of the vehicle Battery using 10 or 16mmsq wire. Insert a 60A fuse into this line close to the vehicle battery.
  • Connect "Aux Bat� to positive terminal of auxiliary (second) Battery using 10 or 16mmsq wire.Insert a 60A fuse into this line close to the auxilliary battery.
  • Red LED will blink indicating that the unit has power
  • Red LED turns ON solid when switch is ON

Mount in cool place
Do not short Battery leads 
No user serviceable parts inside Return to seller if malfunctioning


The product will be replaced or repaired if a failure occurs within one year, from the date of purchase, as a result of faulty materials or workmanship provided that the product is returned to the seller with proof of purchase. Replacement or repair shall be at the discretion of the manufacturer. This warranty excludes failures which results from misuse of the product. The manufacturer and/or seller shall not be liable for personal injury or consequential damages that may result through the use of this product. Lightning damage is excluded from this warranty.

Note: The manufacturer reserves the right to change the product specification without prior notice as a result of his continued development and improvement program.Picture may differ from actual product


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