MDC OFF-GRID extreme XT12HR - 12 VDC Overload Protection; High Load Primary ANL Fuses; Medium Load Secondary Circuit Breakers (10 A-50 A); Mini Circuit Breakers

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12VDC Overload Protection
High Load Primary ANL Fuses
The 12VDC overcurrent protection is provided by ANL fuses, housed in
the
electrical compartment under the dinette seats. These fuses protect
the system from excessive current and must be
manually replaced if blown.
Your XT12HR OGE system includes the following ANL fuses:
• 400A ANL Fuse – Protects the battery bank from overcurrent and
protects the
Renogy REGO 12V 3000W HF Inverter Charger
• 60A ANL Fuse – Protects the Renogy 50A DC-DC Charger
Replacing an ANL Fuse
1. Disconnect all power sources before servicing.
2. Remove the fuse cover and inspect the fuse. A blown fuse will have a visible break in the
internal element.
3. Remove the failed fuse by unbolting it from the fuse holder.
4. Replace it with a fuse of the same rating to ensure proper protection.
5. Secure the connections and reinstall the fuse cover before
restoring power.
• ANL fuses do not reset automatically and must be replaced when blown.
• Always use fuses rated for the system's current capacity to prevent damage to electrical components.
Medium Load Secondary Circuit Breakers (10A-50A)
Push-to-reset circuit breakers provide overcurrent protection for directly co nnected DC
appliances and the PV system. They are typically located in the main electrical bay under
the dinette seat or bed, depending on your caravan model.
Resetting a Tripped Breaker
• When a breaker trips, a small black pin on the end of the breaker
will
extend outward.
• The pin will have some resistance when pressed back in.
• Firmly press the pin inward until an audible click confirms the
breaker has been successfully reset.
Mini Circuit Breakers
• Located on the Distribution Switchboard Control Panel.
• Each breaker corresponds to a specific circuit, as labeled on the panel. Refer to the Wiring
Plan – Distribution Switchboard for circuit identification.
• These are push-to-reset type breakers:
o When tripped, the reset button extends outward
o The button will have slight resistance when pressed back in.
o Press firmly until an audible click confirms the breaker has been successfully reset.
Repeated tripping can cause thermal fatigue, weakening the internal components and reducing the breaker's effectiveness over
time.
• If a breaker trips frequently, investigate potential overloads, short circuits, or faulty wiring.
• If no issues are found but the breaker continues to trip or does not reset properly, it may be worn out and require
replacement.