Where to buy nuCamp Tab320 S fuses/breakers?

Matilda2xhr
Matilda2xhr Member Posts: 6
in Battery/Electrical & Solar
Hello,
I went into the nuCamp on-line store but only found the Alde fuse for sale.  Any suggestions on where to buy other fuses/breakers? The owner's manual says "use only nuCamp fuses" so not sure if can buy/use other fuses.   Our local RV dealers, like most, sell a variety of RV manufacturers and makes....not sure if they are interchangable.  Thanks!
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Comments

  • elbolillo
    elbolillo Member Posts: 555
    Any brand fuses will work. There are a number of kits with a variety of the different fuses needed that can be purchased on Amazon or similar merchants.
    _____________________________________________________
    Ken / 2023 Tab 400 “La Bolita” (31,000+ miles) / 2024 Toyota Sequoia
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  • donmontalvo
    donmontalvo Member Posts: 187
    Bought one of these:

    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
    https://revkit.com/donmontalvo/ | https://donmontalvo.com
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  • otr_320
    otr_320 Member Posts: 79
    edited June 2025
    Highly recommend purchasing name-brand fuses like Bussmann or Littelfuse (available at any auto-parts store).  The vast majority of RV manufacturers (including NuCamp) use Bussmann or Littelfuse as OEM.  I've tested a number of off-brand, no-name, highly discounted ATO, MEGA, etc. fuses typically found on Amazon and eBay.  Quality control is terrible.  Nearly every one I tested opened (blew) at a significantly higher current than the same-rated Bussmann or Littelfuse. This means they won't provide the proper protection and place your camper at risk.
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  • elbolillo
    elbolillo Member Posts: 555
    I purchased these: https://www.amazon.com/dp/B0895PV8S2?ref_=ppx_hzsearch_conn_dt_b_fed_asin_title_7&th=1 

    _____________________________________________________
    Ken / 2023 Tab 400 “La Bolita” (31,000+ miles) / 2024 Toyota Sequoia
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  • Matilda2xhr
    Matilda2xhr Member Posts: 6
    Thank you all!   That's good info.  Follow-up question---I have searched high and low for the location of the fuses----are they hidden somewhere?  They are certainly not exposed so must be behind or beneath something.   Ugh (new to RVing, as you can probably tell. Thanks again. 
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  • elbolillo
    elbolillo Member Posts: 555
    Most of your fuses are in the WFCO converter. Other fuses are inline with the wiring to the battery or solar controllers. And the inline fuse of the Alde.
    _____________________________________________________
    Ken / 2023 Tab 400 “La Bolita” (31,000+ miles) / 2024 Toyota Sequoia
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  • donmontalvo
    donmontalvo Member Posts: 187
    edited June 2025
    The WFCO manual gives a couple examples but no explicit warning against using any other brands.


    Our group tested several fuses from the pack I bought through Amazon, they all failed within 5% of the fuse rating.

    That said, the two bulleted items are both a product and a standard.

    I believe the blurb "ATC or ATO automotive type fuses such as" is not a brand mandate.

    Happy to be proven wrong.


    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
    https://revkit.com/donmontalvo/ | https://donmontalvo.com
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  • donmontalvo
    donmontalvo Member Posts: 187
    edited June 2025
    (nm)
    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
    https://revkit.com/donmontalvo/ | https://donmontalvo.com
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  • Bayliss
    Bayliss Member Posts: 1,507
    @Matilda2xhr, you did not mention what model year T@B 320 S you have, but as @elbolillo noted, the main fuses are in your WFCO power center/converter.  It is likely located on the cabinet below the driver's side bench inside your trailer.  The 120V AC circuit breakers, like what you have in the electrical panel for your home, are also located in the power center.  Just flip open the door that covers the circuit breakers/fuses.

    An important fuse to also be aware of is the 30 Amp fuse that will be located inline on the 12V positive (+) wire connected to the positive post of your battery.


    2019 T@B 320 S Boondock Lite; 2025 Toyota Tundra CrewMax 4x4
    (Alde: 3020; Refrig: Isotherm Cruise 65 Eleg; Battery: BB 100Ah LiFePO4; Solar: Renogy 220W Portable Suitcase w/ Victron SmartSolar MPPT 75/15 Controller; Victron BMV-712 Battery Monitor w/ Shunt; Pwr Cntr: PD-4135KW2B; EMS: PI-HW30C)
    Greg & Marlene (Tucson, AZ)


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  • Matilda2xhr
    Matilda2xhr Member Posts: 6
    Thank you all!  I located fuses/breakers and really appreciate your help.  
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  • otr_320
    otr_320 Member Posts: 79
    edited June 2025
    donmontalvo said:
    The WFCO manual gives a couple examples but no explicit warning against using any other brands.



    Our group tested several fuses from the pack I bought through Amazon, they all failed within 5% of the fuse rating.

    Happy to be proven wrong.
    WFCO implies any brand of replacement fuse should be equivalent in performance to the Bussmann or Littelfuse ATO fuses.  Most Bussmann and Littelfuse fuses comply with a number of ISO and SAE standards.  How many off-brand, less-expensive Amazon/eBay ATO fuses are ISO/SAE compliant?  Compliance assures a certain level of performance and safety---and also increases manufacturing costs.  Bussmann and Littelfuse cost more for a reason.  It's the end-user's responsibility to explicitly rule out use of specific brands of fuses, not WFCO.  Either you care about the details or you don't.

    I've never witnessed any ATO fuse from any manufacturer (including Bussmann and Littelfuse) open anywhere close to (+/-) 5% of their current rating.  The Bussmann or Littelfuse ATO's, which I've tested numerous times over the years, consistently open when current reaches 115-135% of their rating (varied from fuse to fuse---even if they had the same rating).  I've seen a number of no-name, non-compliant ATO's from Amazon/eBay open at 150-200% of their rating---unsafe to say the least---and definitely not anywhere equivalent in performance to Bussmann or Littelfuse.

    These are very simple tests. Simply increase current to the point the fuse opens. I use variable DC power supplies to test smaller ATO fuses and inverters under varying loads to test larger ATO fuses.  The results have been consistent and very repeatable.

    Care to explain how your group tested your ATO fuses?
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  • donmontalvo
    donmontalvo Member Posts: 187
    edited June 2025
    otr_320 I try to avoid anonymous trolls. I posted my comment. Adults can make their own decisions.
    Don Montalvo | Retired Veteran | Full time boondocker
    Camper: nuCamp T@B 320S BBC | 12V 2x100Ah LiFePO4 | 600W Solar
    Tow Vehicle: Jeep JLU Rubicon | 12V 100Ah LiFePO4 | 200W Solar
    https://revkit.com/donmontalvo/ | https://donmontalvo.com
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  • otr_320
    otr_320 Member Posts: 79
    edited June 2025
    donmontalvo said:
    otr_320 I try to avoid anonymous trolls. I posted my comment. Adults can make their own decisions.
    In your post you commented, "Happy to be proven wrong". Your post was mis-guided, so I replied accordingly. Your only defense was to call me an "anonymous troll"?  Agree, adults can make their own decisions.
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