Dual Isolator Switch 12V 140A VSR Double Battery Automatic Charger
12V 140A Dual Battery Isolator Kit – Universal Application
Power up your adventures with this heavy-duty dual battery
isolator, designed for 12V systems and compatible with a wide range
of vehicles including 4WDs, marine vessels, off-road rigs, RVs,
trucks, caravans, and camping setups. Whether you’re on the road or
offshore, it ensures both your main and auxiliary batteries stay in
peak condition.
Smart Voltage-Sensing Technology
Equipped with a Voltage Sensitive Relay (VSR), the system
automatically engages at 13.3V and disconnects at 12.8V. This
guarantees your starting battery remains fully charged and ready to
go while your auxiliary battery handles additional loads. The
result? Two independent power supplies from a single alternator.
Built for Reliable Performance
Rated Voltage: 12V DC
Continuous Current: 140A
Peak/Intermittent Current: 170A
Cut-In Voltage: 13.3V
Cut-Out Voltage: 12.8V
Delay Time: 5 seconds (prevents unnecessary switching)
Operating Temperature: -30°C to 105°C (-22°F to 221°F)
Storage Temperature: -40°C to 125°C
Rugged & Weather-Resistant
The isolator features a robust, water-resistant housing and a
vibration-resistant design, making it dependable in harsh outdoor
environments. It’s engineered to withstand extreme temperatures and
challenging conditions—perfect for off-grid power setups.
Easy, All-in-One Installation
Each kit includes everything you need for a complete install, and
it’s safe for alternators up to 120A output. With its compact size
(2.5" x 2.5" x 2"), you can mount it almost anywhere in your
vehicle. Once installed, it operates fully automatically—no
switches or manual intervention required.
Product Specifications
| Rating Voltage | DC12V |
| Continuos Rating | 140Amp |
| Cut-in Voltage | 13.3V |
| Cut-out Voltage | 12.8V |
| Intermittent Rating | 140A |
| Product installation range | cars,off-road vehicles,buses,RVS,yachts,boats,etc |
Isolator Switch Q & A
Q1: How do you pack the products?
A: Typically, we pack the Isolator Switch in neutral white boxes
and sturdy brown cartons or wooden boxes. If you have
a registered patent, we can package the products in your branded
boxes upon receiving your authorization letter.
Q2: What are your payment terms?
A: We require a 30% deposit via T/T, with the remaining 70% due
before delivery, or you can opt for L/C with a 30% deposit. We’ll
send you photos of the products and packaging before you pay the
balance.
Q3: What are your delivery terms?
A: We offer EXW, FOB, CFR, CIF, and DDU terms.
Q4: How long is the delivery time?
A: Delivery typically takes 30 to 60 days after we receive your
advance payment. The exact time depends on the products and order
quantity.
Q5: Do you offer samples?
A: Yes, we can provide samples if we have stock. However, customers
are responsible for the sample cost and shipping fees.
Q6: Do you test your products before shipping?
A: Absolutely, we conduct 100% testing before delivery to ensure
quality.
Q7: How do you build long-term and strong relationships with
customers?
A: We maintain high-quality standards and competitive pricing to
ensure the benefit of our customers.
