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Voltage Sensitive Split Charge Relay - 12V 140A

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Voltage Sensitive Split Charge Relay - 12V 140A

(31 Reviews)

Price: £36.34 (£30.28 Exc. VAT)

Product code: P00705

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Description
Specifications
Downloads / Links
Customer Reviews 31

12V, 140A rated voltage sensitive relay for split charging applications in camper vans, motorhomes, 4x4s and boats. Allows charge to flow into one battery (or bank of batteries) only when a charging voltage is detected at the other battery (dual sensing operation).

Dual sensing operation - charges from starter battery to leisure battery when alternator is running and charges from leisure battery to starter battery when mains charger is connected.
Relay connects when sensed voltage reaches 13.7V or higher
Relay disconnects when sensed voltage drops to 12.8V or lower
Maintains battery isolation when not charging, so starter cannot be drained by leisure use and vice-versa.
Ignition protection to UL1107
Fully automatic operation
E Mark approval
Virtually zero voltage drop
Protects sensitive electronic equipment from harmful engine start-up spikes
Well proven design with 1000s of units operating in the field
Terminal connections marked on inside of unit for easy installation

Note: The benefit of this type of relay is that it does not require a connection to the alternator or any modifications to the existing vehicle electrical system. Simply connect the +ve terminals on each of your batteries to the terminals on the relay and the black relay wire to a common -ve point.

An LED indicates when the relay is ON (contacts closed). Fixing holes in the body allow the unit to be mounted to a bulkhead and body cut-outs offer various cable routing options.

Fully encapsulated electronics make this unit splashproof and particularly suitable for harsh environments (marine use, vehicle engine bays etc.)

Sold individually.

IMPORTANT NOTE: These relays are not suitable for vehicles with 'smart' or 'intelligent' alternators. As a guide this applies to vehicles having engines that comply with Euro5 emissions standards and onward, often also incorporating regenerative braking (if in doubt please consult your vehicle manufacturer to confirm). If your vehicle has a smart alternator then you will need to use a battery-to-battery charger instead of a VSR.

Sensing mode: Dual (2-way split charging, starter to leisure and vice-versa)
Voltage rating (nominal): 12V DC
Current rating: 140A
'Cut-in' voltage: 13.7V
'Cut-out' voltage: 12.8V
Terminal size: 2 x M6 studs and nuts
Other connections: Ground wire to connect to common -ve
Ground wire: 1mm² 50cm long approx.
Fixing hole dia: 5mm
Overall dimensions: 67 (W) x 67 (H) x 50 (D) mm

Part Number: 4015

VSR wiring diagram

Average Rating (31 Reviews):

Write a Review and share your opinions!

Rating:

Voltage Sensitive Split Charge Relay - 12V 140A

Friday, 26 June 2020 | Dave

Easy and effective way to add a second battery.

Rating:

Voltage Sensitive Split Charge Relay - 12V 140A

Wednesday, 27 May 2020 | Michael

Works perfectly - simple to install - highly recommended. Fitted to my 1985 VW pickup with demountable camper with solar panels. Great item.

Rating:

Voltage Sensitive Split Charge Relay - 12V 140A

Saturday, 26 October 2019 | Carl

Excellent technical knowledge and helpfull on the phone. This VSR was to replace my old one. It is half the price of my old VSR and is twice as good. It cuts in and charges the leisure batteries and when on hook up power it cuts in to charge the starter battery. It is duel purpose I would highly recommend this product for motorhomes and or boats a superb and well priced bit of kit.

Rating:

Split charge relay

Saturday, 12 October 2019 | Robert

Very prompt service & quality part supplied

Rating:

Split charger

Wednesday, 14 August 2019 | Robert

Great service and very helpful. Replacement for an old one. Easy to install and it was straight up and running. Early days yet as its only done one short trip, but all seems great and just what was needed.
I have used 12V before and have found them to be an excellent, knowledgable supplier. The get my vote.

Rating:

Excellent Product

Wednesday, 26 June 2019 | Brian

Relay works as expected. Good product

Rating:

The best

Thursday, 7 March 2019 | Neil

My problem was audio equipment.
My power capacitor would drain my battery over time, especially in the cold.
It would not last a nite in winter, resulting in not enough power to start the car in a morning.
I had an inline fuse/RCD device from my battery, and I had taken to flipping that off to isolate things. I often forgot though, resulting in flat batteries.
I contacted 12 Volt Planet describing what I needed, and this deice is what was recommended.
It works brilliantly. Since fitting it, my battery maintains a good healthy charge at all times. I no longer even worry about it. I literally have to do nothing at all to isolate things.
It cost a little more than I could really afford, but it is one the best things I have bought as far as audio gear is worth.
Maximum points, stars, kudos for their patience. Craig was awesome, and his advice was perfect.
THANK YOU 12 VOLT PLANET

Rating:

Split charge relay

Monday, 20 November 2017 | Martyn

Easy to install. The holes for the wire entries could have done with being larger for my installation

Rating:

Excellent, needs good earth!

Monday, 13 November 2017 | Christopher

I fitted this and thought I'd done a neat and perfect job but something was wrong and the relay kept clicking on and off whenever I had a load on the leisure battery. Checking everything still didn't help until I discovered that the leisure battery earth was just a little insecure and wasn't giving me a good connection. Problem sorted. This is a very simple and efficient method of charging the leisure battery and I would heartily recommend it.

Rating:

vsr

Friday, 21 July 2017 | Mike

seems to have cured my battery charging problem

Read all 31 customer reviews...