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HomeShopMotorcycle Parts / AccessoriesMotorcycle Engines & ComponentRegulator & Resistor12V 140 Amp Dual Battery Smart Isolator Isolation Relay ATV UTV Wiring Kit

12V 140 Amp Dual Battery Smart Isolator Isolation Relay ATV UTV Wiring Kit

$75.99 (Price with tax)

Ship From: CN (Free Shipping)
Estimated Delivery on: Thursday , November 4

In stock. Ships in 24 hours
MPN: YE-BG1835460
Return policy: Eligible for Return, Refund or Replacement
Declaration: High quality auto accessories with 1 year warranty




 TMN isolating relay (BSR = Battery Sensitive Relay)

Continuous load

 max. 140 amps

Housing color


Status light / color

 yes / green

Status light ON

 Voltage above 13.3 VDC (circuit is closed)

Status light OFF

 voltage below 12.8V DC (circuit is open)




 (LxWxH) approx 67x67x53mm


 2x battery screw connections + 1x ground line

Areas of application

Car,buses,Boats,,Caravan and Camping,Solar applications,CarHifi,Etc.


Purpose of use:

1.If a second or (secondary) additional battery is to be installed in a vehicle, the installation of an isolating relay is absolutely recommended.

2.The purpose of installing this relay is to ensure that the connection between the two batteries is disconnected with the engine switched off if the voltage falls below 12.8V. This ensures that the starter battery is not discharged if the additional battery consumes further energy.

3.When the engine is switched on, the charging voltage increases to over 13.3V (alternator control voltage ?? 13.4), as a result of which the cut-off relay closes the circuit and the starter and auxiliary batteries are charged at the same time. The same applies if the charging voltage of the additional battery increases to over 13.3V due to a connected charger or a built-in solar system. This BSR isolating relay works bidirectionally in both directions.

4.This relay is suitable for CAN bus vehicles. No alternator control voltage d + or ignition plus is required.


Package Included:

1 X

 TMN BSR Isolating Relay 140A

1 X

 Pole clamp set +/-

1 X

 3 meter 20mm2 OFC full copper premium battery cable Red

1 X

 1 meter of 20mm2 OFC full copper premium grounding cable Black

2 X

 MIDI fuse holder

2 X

 MIDI fuses 60A

8 X

 20mm2 tubular cable lugs M6

1 X


1 X

 35cm shrink tubing


Additional information

Weight1558 g
Quality assurance time

1 year

Return and exchange cycle

30 days

Warranty Policy
Right parts, guaranteed. If you find any defects, let us know within 2 days and we’ll take care of it. Check out our Warranty Policy for more details.

Shipping Policy
We ship fast so you can get on the road that much faster. Check out our Shipping Policy for more details.

Easy Return Policy
We’re only happy if you’re happy. If you’re not entirely satisfied with your order, you may be entitled to a refund. Check out our Return Policy for more details.

We can only accept returns for items that are unused, undamaged, and in original packaging with all accessories. You have 30 days from the date of delivery to return items for an exchange, refund, or store credit.

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