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
Redarc

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

Part Number: 331-FK40
In Stock
$70.00
Retail:$106.63
You Save: 34%
Accessories and Parts
Add to cart
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. 1-800-940-8924 to order Redarc accessories and parts part number 331-FK40 or order online at etrailer.com. Free expert support on all Redarc products. Great prices 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 (18)
  • Q & A (0)
  • Videos (2)
  • Photos

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

Speaker 1: Today we'll be having a look at the Redarc 40 amp fuse kit for Redarc in-vehicle DC to DC battery chargers, part number 331-FK40.This fuse kit is a great solution when you need to fuse a power wire, such as this six gauge power wire. You may need to use this if you're using a battery charger on a trailer, which is what we're going to be using for, or if you're using it for a wench or if you're using it for a salt spreader on the back of a plow truck or whatever other application you're using it with.In our particular case we're using six gauge wire going into it. The terminals that come with it will crimp onto six gauge wire very nicely. This kit will come with two fuse holders and four fuses so you have two replacement fuses if you ever we're happen to blow one.We also have four ring terminals so you can actually install both fuse holders appropriately.Now the reason you're going to want this over other fuse options on the market is that this comes with everything you need in order to properly get a fuse setup on a wire, such as this six gauge wire. The reason you want to have fuse installed is because if you we're to have a short circuit, you don't have to worry about an electrical fire happening in your trailer, your vehicle, or damaging your piece of equipment that's being powered by this. The fuse will blow, thus eliminating the risk of an electric fire or causing damage to your expensive devices.Now the fuses that come with this kit are rated up to 40 amps.

So if you we're to have a draw over 40 amps, the fuse will then blow and then will protect the system. If you're running less than 40 amps of current on your device, this will be a perfect solution for you.Inside of our fuse holder, you can find our 40 amp fuse. It's easily replaceable with one of the included replacements if you we're to need to replace it. You don't have to worry about running to an auto parts store in order to get a replacement. You already have it so you're safe for the future.Now that we've gone over some features, we'll show you how to get it installed.As you can see here, we have a power wire in the engine compartment of our vehicle.

In order to hook this up to our battery, we need to make sure that we have a fuse to protect the circuit that this wire's going to power.Now we're going to cut off some insulation from all three ends of our wire. Just using a utility knife to this. If you have wire strippers that are big enough to this, that's good. I don't so I'm just using a utility knife.Now that we have a cut, we'll pull off the end and we'll twist the wire together nice and tight. We'll do the same for the other two ends.Now we'll take one of our ring terminals that comes with our kit, and we'll stick it on the long end of our cable.

We'll stick it down all the way and we'll crimp it into place. We're using a hydraulic crimper for this. These are readily available at most hardware stores.We did the same for one of the other ends of our short cable. Now on the other end of our short cable, since we're using six gauge wire, we're going to attach a six gauge ring terminal with a 3/8 of an inch diameter hole, part number SWC57016 on our website.We'll use our same crimping tool to crimp that into place.Redarc does highly recommend that we solder .. I will go ahead and get some solder inside of there.Okay, now that our connection is soldered, we'll have a great electrical connection that's nice and solid.

We'll take some heat shrink and we'll cover up our solder joint and our cable. We'll use a heat gun to shrink it down.We'll repeat the same process as soldering and heat shrinking all of our connections from this point forward.Now we'll take our fuse holder, remove the nuts. Take our provided 40 amp fuse. Place it over the studs and we'll place our terminals over the studs and reinstall the nuts.Now we use an eight millimeter socket to tighten our nuts. Now we'll take our cover and we'll fold it over our connections and it'll snap closed and lock into place.Now we'll remove this nut on our positive battery post. Place a ring terminal over the stud and we'll reinstall the nut.That completes our look at an installation of the Redarc 40 amp fuse kit for Redarc in-vehicle DC to DC battery chargers, part number 331-FK40.

Ratings & Reviews

4.8

18 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:

In my opinion, this is a must use with the Redarc battery charger. The battery charger can and will at times pull a steady 25A current, and that can easily heat things up. Prior to using this, I was using some generic inline audio type fuse holders with 4-gauge wires; the fuse holders all melted at the wire connections! The connections between the wires and the fuse holders have to be very good. With this product, that connection is in fact solid. I have been using this product for about a year now without any issue.

Fs profile picture

Fs

8/30/2024

Update: 20240829. Still working flawlessly! No melting issue.



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:

Must have perfect for DCdc charger



by:

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



by:

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



by:

God little kit, easy to install.



by:

Quality items at a fair price.



by:

gotta use these with the REDARC



by:

Good fuses!



by:



by:

very satified with product and cusomer service.



by:

Quick shipping, Haven’t hooked it up yet.



by:



by:



by:



by:



by:



by:


18
18

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 UltraSafe Battery Charger with JumpCharge Engine Start be Used with 4-Bank Battery Setup
    The NOCO Genius UltraSafe Battery Charger with JumpCharge Engine Start 329-G15000 (DISCONTINUED) is designed more with a single battery in mind. Since you have a 4-bank battery setup you need the NOCO Genius 10 Battery Charger and Maintainer # 329-GENIUS10.
    view full answer...
  • Can Inverter Run Off Trailer Battery to Cool Fridge When Driving
    You can absolutely connect the Power Inverter 1000 Watts with Three AC Receptacles # WC3720 as a way to run your fridge while you are traveling. To do so you would also need a charger for that battery. The charger will take power from your tow vehicle's battery and charge the auxiliary battery which is powering your fridge. For that the best option is the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp # 331-BCDC1225D for which you'd need fuses # 331-FK40....
    view full answer...
  • 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...
  • Recommended Vehicle to Trailer Battery Charger for Trailer Battery
    Without hesitation, I recommend using a 7-way trailer connector and using the 12V charge line you find at the 1 o'clock position to run to a battery charger and then your trailer battery. Most charge lines only take whatever amperage is not being used by the vehicle and sends it to the trailer battery providing a maintenance charge. Your trailer clearance lights will run without issue using either plug and drawing power from your vehicle, so the 7-way will serve you well for that function...
    view full answer...
    Image 1 for Image 2 for
  • Parts Needed to Charge Enclosed Trailer Battery When Towing
    To charge your auxiliary battery on your enclosed trailer while you are towing you will need the Redarc In-Vehicle BCDC Battery Charger - 25 Amp # 331-BCDC1225D or 40 amp # 331-BCDC1240D. The 25 amp is the most likely choice for you because it is for batteries (or battery banks) with 75 amp-hours to 200 amp-hours ratings, while the 40 amp charger is for 200 amp-hours and above. You will also need the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger # 331-FK40. So...
    view full answer...
  • Is There Better Way To Charge Your Trailer Batteries While On The Go
    Hey Brady, The solar panel system should've done a good job of keeping the batteries charged in storage unless a lot of things were left on pulling a large load. I'd be curious to see if the solar panel system was installed correctly and actually sending power to the batteries. To answer your question, yes, there is another way to charge your trailer batteries while towing with one of Redarc's BCDC chargers. Something like the 25 amp # 331-BCDC1225D would be more than enough to charge...
    view full answer...
  • Will Curt Echo Brake Controller Allow Trailer Battery to Charge
    Yes, the Curt Echo Wireless Brake Controller # C51180 does allow 12V power to pass through the controller. With that being said, it will just be a trickle charge which is normal for a 7-Way even without this controller installed. Your trailer battery charge level will keep from being depleted but the 12V power won't increase the charge of your battery. If you want to add the ability to charge your trailer battery while towing then you'll need a charger like the Redarc BCDC # 331-BCDC1225D...
    view full answer...
  • How To Charge Camper Battery From Vehicle Battery While Being Towed
    To charge your battery on your camper properly while towing I recommend the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp Item # 331-BCDC1225D combined with Jumper Cables with Blue Quick Connect - 28' Long Item # 3375601026. Because the BCDC system requires a minimum of 4 guage wire, the clamp connectors on the cables can be removed. Installing the BCDC Charger allows your vehicle to fully charge your trailer battery without draining the vehicle battery,...
    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...
  • 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...
  • Charging Lithium Trailer Batteries While Driving
    Yes, your solution is a DC to DC charger as there is not a "good" way to charge your 100Ahr trailer battery using your Tacoma's 7 pin connection only. You will get some low amperage trickle-charge while hooked up and the alternator running, but not enough to fully charge your trailer battery. For systems where your trailer batteries are rated for 75-200 Amp-hours, use the Redarc # 331-BCDC1225D 25-Amp, Dual-Input DC-DC Charger. You will additionally need three Redarc # 331-FK40, 40-Amp...
    view full answer...
  • Will Curt C51108 Echo Pass Through 12-Volt Power to Maintain Trailer Mounted Battery
    The 12-volt power circuit on the trailer connector provides the power for the brake controller which can use up to 10 amps per axle. The controller will 'pass through' the 12 volt power feed circuit to the trailer but it won't have too much effect during braking as the entire feed circuit only provides up to 30 amps. The # C51180 Echo needs that direct connection to the car battery in order to function and actuate your trailer brakes. In other words, I wouldn't depend on the 12-volt feed...
    view full answer...
  • In-Vehicle Battery Charger and Converter for Gooseneck Horse Trailer
    To charge your gooseneck trailer batteries and power your accessories you're going to need the Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 25 Amp item # 331-BCDC1225D. You are also going to want the 40-Amp MIDI Fuse Kit for Redarc In-Vehicle 25-Amp BCDC Battery Charger item # 331-FK40 to connect to your battery and the Universal Mounting Bracket for Redarc BCDC Battery Charger item # RED53FR for installation. This charger can use both your vehicle battery...
    view full answer...
    Image 1 for Image 2 for
  • 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...
  • 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...
  • Does The Manager30 Replace Solar Panel Controller
    Yes, the The Manager30 Battery Management System with Lithium Profile # RED88FR takes place of the solar controller for your current solar panel system. Solar panel controllers are used to help manage the power coming in from the panels and since The Manager30 does the same thing it actually can't be installed with a solar panel controller. The Manager30 is definitely an upgrade though as it pulls power from the solar panels and your vehicle start batter (via the alternator). It prioritizes...
    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
  • How To Choose the Correct Redarc In-Vehicle BCDC Battery Charger for Auxiliary Battery On Vehicle
    In order to choose the correct Redarc In-Vehicle BCDC Battery Charger you'll need to know the amp hour capacity of the battery bank. This would not include the starter battery for the vehicle just the auxiliary battery, the starter battery would get more than enough charge from the vehicle's alternator. Therefore, for a single 12 volt battery you'd need part # 331-BCDC1225D which is rated for 75-200 amp hour batteries (Odyssey PC2150 = 100 Ah). The Redarc In-Vehicle BCDC Battery Charger...
    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 # PK5231201 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 you will...
    view full answer...
  • 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
  • Does Trailer Battery Need to be Grounded
    Yes, in addition to using 10 Gauge Wire # 10-1-1 to send power to your battery, you also need a length of it and a ring terminal # DW05740-1 to ground the negative post of your trailer battery to your trailer frame. Please note, just like in the answer you are referring to, connecting the 10 gauge wire to your trailer 7-Way will only provide you with a maintenance charge. If you're looking to charge your battery without hooking it up to a standard wall outlet then you will need a battery...
    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...
  • Can Redarc BCDC Charger Be Used with 7-Way Connector to Charge Trailer Battery
    The Redarc In-Vehicle BCDC Battery Charger # 331-BCDC1225D that you referenced could physically be installed so that it uses 12V power from the 7-Way connector on your truck, but it's not going to allow for ideal operation. The problem is that typical trailer connectors use smaller 10 gauge wiring that just isn't capable of allowing enough power to pass through to really charge a battery up. Since this is exactly what you would want to use the BCDC charger for, using it with the 7-Way...
    view full answer...


< Previous



Do you have a question about this Accessories and Part?


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 Wilson B
Updated by:
Wilson B
Employee Kristina F
Updated by:
Kristina F
Employee Brent H
Installed by:
Brent H
Employee Brian T
Written by:
Brian T

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.


<