bing tracking image
  1. Accessories and Parts
  2. Redarc
  3. Battery Charger
  4. Fuse Kit
40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger

40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger

Item # 331-FK40
Retail:$87.04
Our Price: $65.00
You Save: 25%
Accessories and Parts
This item qualifies for Free Shipping
Shipping Weight: 0.25 lbs
Quantity: 
In Stock
Redarc Battery Charger - 331-FK40
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

In Use/Installed

Need help with installation?
Locate installers near me
Fuse kit contains 4 high-quality, 40-amp MIDI fuses with protective holders. Works with Redarc 25-amp BCDC battery charger (331-BCDC1225D). Fuses protect your setup from potentially damaging overcurrent caused by short circuits or overloads. 1-833-496-1390 to order Redarc accessories and parts part number 331-FK40 or order online at etrailer.com. Free expert support on all Redarc products. Guaranteed Lowest Price and Fastest Shipping for 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger. Accessories and Parts reviews from real customers.
  • All Info
  • Reviews (15)
  • Q & A (0)
  • Videos (2)
  • Photos
  • Why etrailer?

Redarc Accessories and Parts - 331-FK40

  • Battery Charger
  • Fuse Kit
  • Redarc

Fuse kit contains 4 high-quality, 40-amp MIDI fuses with protective holders. Works with Redarc 25-amp BCDC battery charger (331-BCDC1225D). Fuses protect your setup from potentially damaging overcurrent caused by short circuits or overloads.


Features:

  • Fuse kit ensures that your setup is protected from potentially damaging short circuits or overloads
    • Designed for use with Redarc BCDC 25-amp battery charger (331-BCDC1225D)
  • Fuse holders provide maximum contact with fuse to keep dirt and debris out of contact points
  • Kit includes
    • (4) 40-Amp fuses
    • 2 Fuse holders with hardware
    • 4 Cable crimp lugs
  • 2-Year warranty


FK40 40-Amp Fuse Kit for REDARC In-Vehicle 25 Amp BCDC Battery Charger

Installation Details 331-FK40 Installation instructions


California residents: click here


Video of 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Redarc 60-Amp MIDI Fuse Kit Review

Today, we're going to be taking a look at Redarc's midi fuse kit. These are available in forty, sixty or one hundred amps. Many of our customers compare these to standard automotive fuses or circuit breakers and the main reason you would want to opt for this fuse over a standard automotive fuse is that the fuse attachment points are screwed down. This ensures that there will be a good connection between our fuse and our circuits for those high amp drawing components.Circuit breakers can typically build heat under long periods of exposure to high amperage draw, which could cause extra resistance and potentially cause that circuit breaker to pop, requiring you to disconnect it to reset it. Whereas these, don't build as much heat and are going to be more suited for those high amp applications these are going to be heavy duty fuses that will give you overload protection for whatever circuits you install them on. What this means, is if you have a short or fault on a circuit on the other side of the fuse, rather than it causing damage to the wiring and circuits on your vehicle, it simply opens the fuse, allows you to make the repairs that you need to fix that wiring and then simply replace it with a new fuse.The kits come with two fuse holders, four fuses and four ring terminals to make connections for your wiring to connect to your fuses on each side.

To mount it, you will need to provide your own screws, they don't come included with the kit. We just use some self tapping screws here, to get this one mounted. Depending on where you mount it, you may want to use a different type of attachment point.Typical applications use this form for high current drawing components, such as numerous lights inside of a camper or RV. We're using ours with our BCDC charging system on our camper here. And, that completes our look at Redarc's midi fuse kit..

Customer Satisfaction Score:


Customer Reviews

40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger - 331-FK40

Average Customer Rating:  4.8 out of 5 stars   (15 Customer Reviews)

Fuse kit contains 4 high-quality, 40-amp MIDI fuses with protective holders. Works with Redarc 25-amp BCDC battery charger (331-BCDC1225D). Fuses protect your setup from potentially damaging overcurrent caused by short circuits or overloads.

by:

This is a very high-quality fuse kit that I will be using to install a Redarc DC to DC charger in a camping trailer. This kit was recommended by Redarc and etrailer and I am very happy that they worked out the size and type of fuse so I didn't have to muddle through the research. The kit includes all the hardware needed to install it including two spare fuses.




by:

What a difference this makes. Installing this means I have a fully charged battery when I get to camp




by:

Must have perfect for DCdc charger




by:

gotta use these with the REDARC




by:

Easy to install. Instruction were spot on. Not a single problem after a year of use. Definitely recommended. Worth the price.




by:

Good fuses!




by:

Quality items at a fair price.




by:

God little kit, easy to install.




by:




by:




by:

very satified with product and cusomer service.




by:




by:

Quick shipping, Haven’t hooked it up yet.




by:




by:



15
15

See what our Experts say about this Redarc Accessories and Parts

  • Is a Solar Controller Needed to Install Redarc In-Vehicle BCDC Battery Charger
    A solar controller is not required to install the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D, the solar panel does get connected to the charger directly via the yellow wire. As for fuses you will need the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40 which gets installed as per the accompanying photos; it will depend on the type of battery (lead acid or Lithium ion) you are using. I have added a link to a video review of this charger for...
    view full answer...
    Image 1 for Image 2 for
  • Can 25 Amp Redarc In-Vehicle BCDC Battery Charger Pull Power from 12V on 7-Way Connector
    Since the 7-Way connectors on vehicles, like your 2015 Chevy Silverado, have smaller 10 gauge wire it is recommended to route separate wiring (6 - 8 AWG based on the length of wire) so that enough power gets to the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D. It is also recommended to use the 40-Amp MIDI Fuse Kit # 331-FK40 for this charger because these fuses are isolated and better protected in the black compartments. Attached are the installation instructions and some example...
    view full answer...
    Image 1 for
  • How To Charge Trailer Batteries With Vehicle Battery
    The wiring kit you mentioned is no longer available but I do have a way for you to charge your trailer batteries with the tow vehicle. I recommend to use the Redarc In-Vehicle BCDC Battery Charger part # 331-BCDC1225D which is designed to charge the trailer's batteries from the vehicle's alternator. The Redarc has a battery isolator so the trailer cannot pull power from the battery when the ignition is off. This is a safer way to charge the trailer batteries instead of just running a wire...
    view full answer...
  • Recommended Trailer Battery Charging To Allow AC, Refrigerator, and Landing Gear To Function
    When your trailer battery is properly charged, you should not need your vehicle connected or shore power to un your landing gear. Your trailer battery is most likely not getting the charge it needs. From your 14.28V you are getting from your 7-way connection, that will only provide a small maintenance charge to your battery and won't allow it to get over 80 charged. You would need to use a battery charger when not towing to get it up to full power to run your landing gear, fridge, and...
    view full answer...
  • Installation Kit and Wiring for Redarc In-Vehicle BCDC Battery Charger 331-BCDC1225D
    To install your Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D you can use the matching installation kit # 331-FK40 which includes fuse holders, fuses and cable crimps. Based on the 40-amp value of the fuses supplied in the kit you will be fine with 8-gauge wire for a 12-foot run.
    view full answer...
  • Can Redarc In-Vehicle BCDC Battery Charger be Used With Battery Rated For Less Than 75 Amp Hours
    I reached out to the manufacturer, Redarc, who told me that your 66 amp hour battery may in fact be able to use the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D, it just depends on the maximum charge current: "The main thing to consider in this situation is the batteries maximum charge current. If you look up the specs of the battery, it will list a maximum charge current. As long as the battery can support a 25 amp charge current, the...
    view full answer...
  • What Gauge Wire Should be Used When Installing Redarc In-Vehicle Battery Charger # 331-BCDC1225D
    The Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D needs a minimum of 8 gauge wire. The connectors will need to match the gauge wire you use and then any fuses would need to be 40 amp per Redarc with the kit part # 331-FK40. I attached an install video for this charger for you to check out as well.
    view full answer...
  • Does Redarc In-Vehicle BCDC Battery Charger Require Connection to Starter Battery
    That's an excellent question and the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D does require a connection to your starter battery as opposed to your 7-way; additionally you do need the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40. The reason is this kit makes sure you do not get a short or overload your system. I have added links to video reviews for you to take a look at of both the charger and...
    view full answer...
  • How to Charge Trailer Battery While Driving
    We do have one part that will allow you to do exactly what you are seeking, which is to charge your trailer's battery while you are driving. To do that you will need the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D. This charger will connect to your truck's start battery and give your up to 25 amps of current, will both charge and maintain the battery, and has a built-in battery isolator which means it won't draw from your truck's battery when the truck is turned off. To install...
    view full answer...
  • Recommended Battery Management System and Charger for Small Military Trailer
    It sounds like adding Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp Item # 331-BCDC1225D to your trailer would be a great solution. You should already be setup to charge the battery via the tow vehicle's 7 way connector, but the BCDC provides you with a solution to tie in your 100w solar panel and keep your auxiliary battery charged and maintained. It will also let you connect a fridge to the system to draw power from both the panels and battery. The...
    view full answer...
  • Does Redarc In-Vehicle BCDC Battery Charger Have Cold Weather Protection in Lithium Mode
    Yes, there is indeed automatic protection from charging your lithium battery in cold weather with the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D. The # 331-BCDC1225D will switch off at 32 degrees and flash that there is a temperature fault. Once above the temperature it will continue to work as normal. I also wanted to mention that the BCDC will require a fuse kit, the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery...
    view full answer...
  • Does Input Current Have to be 40 Amps for Redarc In-Vehicle BCDC Battery Charger
    The input current does not have to be 40 amps for the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1240D. In fact, the 40 amps is the maximum input current as opposed to the minimum. To install this charger you will also need the Fuse Kit # 331-FK60. As you mentioned, there is a smaller capacity charger with a maximum input current of 25 amps, the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D. The correct fuse kit for this charger is Fuse Kit # 331-FK40. I have added links...
    view full answer...
  • Are Redarc Battery Chargers # BCDC1225D and # BCDC1240D Compatible with AGM and Lithium Batteries
    Yes, both of the BCDC Redarc batteries, part # 331-BCDC1225D and part # 331-BCDC1240D, are compatible with AGM, gel, standard lead acid, calcium, and Lithium ion (LiFePO4) batteries. The wiring configuration will be very similar between the two. You will just need a low voltage disconnect when using the Lithium Ion battery as you can see in the attached photos. To get the proper fuses you will need the 40-Amp MIDI Fuse Kit # 331-FK40 for part # 331-BCDC1225D, or the 60-Amp MIDI Fuse Kit...
    view full answer...
    Image 1 for Image 2 for
  • Charging Trailer When Truck Engine Is Running
    You're correct that the 12 volt power circuit from your truck will not effectively charge a trailer battery that is being used to power hungry electrical loads such as a fridge, lights, inverter, etc. The best way to charge a trailer battery is by using the Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D (25A model) or # 331-BCDC1240D (40A model). These products also have an inbuilt MPPT solar regulator and battery isolator function. The solar regulator will allow you to charge the...
    view full answer...
  • Will 130A Alternator in 2019 Toyota 4Runner be Enough to Work with a 40A Charger
    It sounds like you're referring to the 40A Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1240D for use with your setup. When it comes to chargers it's a little more about what kind of battery bank you're trying to charge up than how much output the alternator has. With that being said, I reached out to my contact at Redarc and he said that you can typically count on about half of your alternator power being able to switch over to their charger systems so your 130A is definitely high...
    view full answer...
  • Wiring the Redarc Auxiliary Trailer Battery Charger to Haulmark Edge Race Trailer
    Wiring your 12V off your 7-way to a trailer junction box like # 38656 is not an issue. I recommend running the higher 8 gauge wire from your vehicle battery to your 7-way, and then from the trailer side 7-way to and from your junction box as well. This will ensure the correct current flow with your Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D and the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40.
    view full answer...
  • Connecting 25 Amp Redarc In-Vehicle BCDC Battery Charger to Ignition Wire
    Let's start with the ignition wire you were asking about for the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D. What you will do is connect the blue wire from the charger directly to an ignition source via 8 gauge wire so it will be a direct connection to wiring that gets power when your ignition is turned on. If you have a smart alternator or have a long run to an ignition source you can also use the 60-Amp Relay Kit for Redarc In-Vehicle...
    view full answer...
  • How To Keep Trailer Batteries Topped Off While In Transit and Parked
    To keep the batteries topped off while in transit, I recommend to use the Redarc In-Vehicle BCDC Battery Charger - Dual Input part # 331-BCDC1225D in the tow vehicle and charge the trailer batteries through the 7-Way 12V circuit. The Redarc charger will use the vehicle's alternator to fully charge the batteries while in transit. While you are sitting still you can hook a solar panel to the charger to maintain the charge while your trailer is parked. The Redarc chargers feature built-in...
    view full answer...
    Image 1 for Image 2 for Image 3 for Image 4 for
  • Charging Battery for Trailer Lights Using Battery from 2017 Ford Super Duty
    To charge your batteries from an AC power source is pretty simple, you just need a charger like the CTEK US 0.8 Universal Battery Charger with Pulse Maintenance # CTEK56865. This is designed for smaller battery banks and just plugs in using a standard outlet like what you find in your home. To effectively charge your battery from your 2017 Ford F-250 is a little bit of a different story. A common misconception is that running a power wire from the vehicle battery to the trailer battery...
    view full answer...
    Image 1 for
  • Travel Trailer Battery Charging from the Tow Vehicle 7-Way
    When your trailer is connected to a 7-way like the Pollak Metal 7-Pole, RV-Style Trailer Socket - Vehicle End # PK12703 the pin at the 1 o'clock position is the 12V power that will charge your trailer battery when it is connected to the corresponding pin on your trailer side connector. This will give your trailer battery a slight maintenance charge that is about 2-4 amps depending on what your alternator can put out that isn't being used by your tow vehicle. This will be like a trickle...
    view full answer...
    Image 1 for
  • Recommended Wiring Gauge for Redarc BCDC to Dual Battery Setup
    The Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D has the equivalent of 10 gauge wires for the power from the battery. It is recommend to install the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40 along with 6 gauge wire like the Bulldog Winch Wiring Kit for ATV/UTV Winches - 120" Long Power Lead # BDW20307
    view full answer...
  • Do I Have to Connect To Battery for 12v Power with RedArc In-Vehicle BCDC
    You will need to connect to the tow vehicle battery in this case. The issue with trying to install and run the RedArc In-Vehicle BCDC # 331-BCDC1225D via the 7 way is that the 10 gauge wiring in a 7 way trailer connector isn't sufficient to provide a charge to your battery. Since this is exactly what you would want to use the BCDC charger for, using it with the 7-Way would almost defeat its purpose so I cannot recommend that you wire it differently in this case. When installing this charger...
    view full answer...
  • Installation of the 50 amp Redarc In-Vehicle BCDC Battery Charger
    The 50 amp Redarc In-Vehicle BCDC Battery Charger, # 331-BCDC1250D should be installed in the RV near the battery bank. You will then install a wire from the Redarc Battery Charger, # 331-BCDC1250D to the crank/start battery in your tow vehicle. I recommend you go with a large gauge wire to compensate for voltage drop. We actually have a winch install kit that will work for this purpose, the Bulldog Winch Rear Wiring Kit, # BDW20206. You will also need the 40-Amp MIDI Fuse Kit for Redarc...
    view full answer...
  • How to Charge the Batteries on a Trailer While Underway
    You are correct that the power coming from your vehicles battery while traveling is only going to provide a maintenance charge to your batteries on your trailer. It will not charge a dead battery and it will not keep the trailers batteries charged if they are being used while underway. Using wiring and a solenoid like the Tow Ready # TR118665 that you mentioned will provide a good maintenance charge while you're driving but that is about it. In order to charge and maintain a full charge...
    view full answer...


< Previous
12



Do you have a question about this Accessories and Part?




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate accessories and part information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Joshua S
Video by:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Brent H
Installed by:
Brent H
Employee Brian T
Written by:
Brian T
Employee Kristina F
Updated by:
Kristina F

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time. Let us know if anything is missing or if you have any questions.


Product Experts Available Now!
Call 1-833-496-1390