Place a 400A fuse directly at a compatible M8 power connection.
The Renogy 400A terminal fuse is a compact bolt-down protection device for compatible battery-terminal and busbar arrangements. This listing also identifies an M8 terminal bolt for the supported mounting connection.
Application example: combiner box sold separately. This page is for the 400A terminal fuse and listed M8 bolt.
At a glance
Verified numbers for the exact product family
400AFuse rating
M8Listed terminal bolt
MRBFCompact terminal-fuse format
1 fuseQuantity in this listing
A high amp rating still must protect the smallest conductor
Use a 400A terminal fuse only when the equipment, cable and mounting hardware all permit it. The fuse should never be larger than the protected circuit allows.
Why this Renogy product
Source-side protection in a space-efficient format
Short unprotected pathMounting at a compatible power stud can reduce the conductor length between the source and first protection point.
Compact footprintMRBF-style terminal fuses fit tighter battery and distribution layouts than many remote holders.
Replaceable elementThe fuse can be replaced after the circuit is isolated and the cause of the fault is corrected.
System fit
Confirm the holder, stud geometry and fault-current rating.
Do not attach a fuse directly where the battery or busbar manufacturer has not approved the arrangement. Confirm stud size, conductor terminal stack, cover clearance, torque, voltage and available short-circuit current.
Mechanical fitThe listed M8 bolt does not guarantee compatibility with every M8 battery terminal; thread depth and terminal layout still matter.
Electrical fitSize the fuse from the protected conductor and equipment instructions, including continuous-load requirements.
In the box
What this listing is documented to include
One Renogy 400A terminal fuse
One M8 terminal bolt as identified by this exact Torven listing
Fuse block, terminal cover, cable, battery and busbar are not listed as included.
Product confidence
One-year terminal-fuse warranty
Renogy lists a 1-year material-and-workmanship warranty for this accessory. Eligibility, exclusions and remedies follow the current written terms for the exact item.
Common questions
Buyer FAQ
Does it mount to every M8 battery terminal?
No. Confirm the approved fuse arrangement, bolt thread, terminal depth, stacking order and cover clearance for the exact battery.
Does it include a separate fuse holder?
No separate holder is listed. This compact fuse is designed for a compatible terminal-mount arrangement.
Can I replace a smaller fuse with this 400A model?
Only if the protected cable and equipment explicitly permit the higher rating.
What should I do after a fuse opens?
Isolate all sources, find and correct the fault, inspect the terminals for heat damage and install the exact approved replacement.
Shipping: Free standard shipping applies to eligible products in the contiguous 48 states with no order minimum. Oversized, freight, remote-area, expedited, or manufacturer-restricted shipments may require an additional charge. If one applies, Torven Power will contact you for approval before processing your order. Review the Shipping Policy.
Returns: Return requests are subject to product eligibility, condition, timing and supplier-specific exceptions. Review the Return & Refund Policy before ordering.
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