Quick Summary
The Durite 12V 140A Intelligent Split Charge Relay 0-727-33 is a voltage sensitive relay for split charging. It uses the vehicle charging system voltage rise after engine start to allow power to charge a second or leisure battery.
The stated figures include relay activation voltage of 13.3 V and relay isolation voltage of 12.65 V. It is described as dual sense operation, so the voltage thresholds are the key points to check before choosing an offer.
Key Details
| Detail | Verified information and buyer relevance |
|---|---|
| Brand | Durite, which helps confirm the exact product family. |
| Product type | 12V 140A intelligent split charge relay for split charging between batteries. |
| Voltage | 12 V, so it matches a 12 V vehicle electrical system. |
| Current rating | 140 A, which is the stated relay rating. |
| Operation | Voltage sensitive/intelligent with dual sense operation. |
| Activation voltage | 13.3 V. |
| Isolation voltage | 12.65 V. |
What to Compare Before Buying
- Voltage: This relay is for 12 V systems. Check that your vehicle or installation uses the same system voltage.
- Current rating: The stated rating is 140 A. Compare that with the electrical load expected in your split charge setup.
- Trigger and isolation thresholds: The relay activates at 13.3 V and isolates at 12.65 V. Make sure those thresholds suit your charging arrangement.
- Use case: It is described for charging a second or leisure battery. Confirm that this is the function you need.
Compatibility, Size and Fit
This relay is described as suitable for camper vans, motor homes, caravans, 4x4s and boats. Check that the selected vehicle or installation uses a 12 V split charge setup and that the relay thresholds suit the charging system.
Before You Decide
Confirm the 12 V system voltage, the 140 A rating and the 13.3 V / 12.65 V switching thresholds before choosing an offer. It is also worth checking that the intended installation is for split charging between a main and second or leisure battery.
