12V 140A Marine Dual Battery Isolator Switch with VSR - 13.3V Cut-In, 12.8V Cut-Out Voltage for Vehicles & Boats
This heavy-duty 12V 140A dual battery isolator provides universal compatibility for 4WD vehicles, marine vessels, RVs, trucks, caravans, and off-grid power systems. Maintains optimal charging for both primary and auxiliary batteries in demanding environments.
Advanced Voltage Sensitive Relay (VSR) automatically engages at 13.3V and disconnects at 12.8V, ensuring your starting battery remains fully charged while auxiliary battery handles additional loads. Creates two independent power supplies from a single alternator with 5-second delay protection.
- Rated Voltage: 12V DC
- Continuous Current: 140A
- Peak/Intermittent Current: 170A
- Cut-In Voltage: 13.3V
- Cut-Out Voltage: 12.8V
- Operating Temperature: -30°C to 105°C (-22°F to 221°F)
- Storage Temperature: -40°C to 125°C
Features robust ABS housing with water-resistant and vibration-resistant construction. Engineered to withstand extreme temperatures and harsh outdoor conditions, making it ideal for marine and off-road applications.
| Attribute | Value |
|---|---|
| Material | ABS |
| Rating Voltage | DC12V |
| Continuous Rating | 140Amp |
| Cut-in Voltage | 13.3V |
| Cut-out Voltage | 12.8V |
| Intermittent Rating | 140A |
| Installation Range | Cars, off-road vehicles, buses, RVs, yachts, boats, etc. |
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