--- product_id: 10878687 title: "WirthCo 31820 Battery Doctor in-Line Water-Resistant ATO/ATC Blade Fuse Holder with Cover 12 AWG" brand: "wirthco" price: "€ 20.52" currency: EUR in_stock: true reviews_count: 10 category: "Wirth Co" url: https://www.desertcart.hr/products/10878687-wirthco-31820-battery-doctor-in-line-water-resistant-ato-atc store_origin: HR region: Croatia --- # Water-resistant cover 30A max current 12 AWG heavy-duty wire WirthCo 31820 Battery Doctor in-Line Water-Resistant ATO/ATC Blade Fuse Holder with Cover 12 AWG **Brand:** wirthco **Price:** € 20.52 **Availability:** ✅ In Stock ## Summary > ⚡ Protect your power like a pro — fuse smarter, not harder! ## Quick Answers - **What is this?** WirthCo 31820 Battery Doctor in-Line Water-Resistant ATO/ATC Blade Fuse Holder with Cover 12 AWG by wirthco - **How much does it cost?** € 20.52 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/10878687-wirthco-31820-battery-doctor-in-line-water-resistant-ato-atc) ## Best For - wirthco enthusiasts ## Why This Product - Trusted wirthco brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Trusted Legacy:** Backed by 30+ years of WirthCo innovation, designed for professionals who demand quality. - • **Pro-Grade Wiring:** Equipped with 12 AWG wire for superior conductivity and minimal power loss. - • **Weatherproof Durability:** Water-resistant cap ensures your fuse stays safe and dry in any environment. - • **Power Up with Confidence:** Handles up to 30 amps for reliable, high-performance electrical protection. - • **Compact & Ready to Install:** 5.5-inch loop length and through-hole mount for quick, hassle-free setup. ## Overview The WirthCo 31820 Battery Doctor In-Line Fuse Holder is a professional-grade, water-resistant ATO/ATC blade fuse holder featuring a 30 amp max current capacity and heavy-duty 12 AWG wire. Designed for easy installation with a 5.5-inch loop and through-hole mount, it includes a protective cover to safeguard your fuse from moisture. Trusted by professionals for over 30 years, this compact and durable fuse holder ensures reliable electrical protection for automotive and power applications. ## Description WirthCo Battery Doctor In-Line ATO/ATC Fuse Holder with Cover is designed with a 30 ampere in-line fuse holder for blade fuses. It features a water resistant cap and 12-gauge wire. The loop length is 5.5 inches. A 30 ampere fuse is included. For over 30 years, WirthCo has been a prime manufacturer of practical products for making life easier and safer. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm Review: Great quality inline fuse at a good price. - This is an excellent inline fused wire. Although the description says that the 30A fuse is not included, mine did come with one (and it was new in packaging). I used this to install a battery into a Peg Perego (kids John Deere tractor) and it works great. Review: easy to use, quality seems good - fast install for charging connector for towed vehicle ## Features - Leading Manufacturer Of High-Quality Products - International Renown For Our Diverse Range Of Award-Winning Products - Fully Equipped With State-Of-The-Art Technology - All Products Have Been Designed With The Professional In Mind - Constantly Modernizing Our Powerful Devices To Meet The Demands Of The Modern User ## Technical Specifications | Specification | Value | |---------------|-------| | AC Adapter Current | 30 A | | ASIN | B00DQ5JRUA | | Best Sellers Rank | #1,831,356 in Automotive ( See Top 100 in Automotive ) #878 in Automotive Replacement Fuse Holders | | Brand | WirthCo | | Brand Name | WirthCo | | Customer Reviews | 4.5 out of 5 stars 259 Reviews | | Global Trade Identification Number | 00010054318204 | | Included Components | 1 Manufacturers Branded Product | | Item Dimensions | 4.5 x 1.8 x 1.3 inches | | Item Weight | 1.12 ounces | | Item dimensions L x W x H | 4.5 x 1.8 x 1.3 inches | | Manufacturer | Battery Doctor | | Material | Plastic or Rubber | | Material Type | Plastic or Rubber | | Maximum Current | 30 A | | Model | 47935 | | Mounting Type | Through-Hole Mount | | Part Number | 31820 | | UPC | 010054318204 | | Unit Count | 1 Count | ## Images ![WirthCo 31820 Battery Doctor in-Line Water-Resistant ATO/ATC Blade Fuse Holder with Cover 12 AWG - Image 1](https://m.media-amazon.com/images/I/41dQNCRcuXL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great quality inline fuse at a good price. *by J***B on October 15, 2019* This is an excellent inline fused wire. Although the description says that the 30A fuse is not included, mine did come with one (and it was new in packaging). I used this to install a battery into a Peg Perego (kids John Deere tractor) and it works great. ### ⭐⭐⭐⭐⭐ easy to use, quality seems good *by A***R on May 13, 2023* fast install for charging connector for towed vehicle ### ⭐⭐⭐⭐⭐ Very nice. *by G***T on July 31, 2016* Very good. Came with a 30A fuse already in the holder. Works great! --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.hr/products/10878687-wirthco-31820-battery-doctor-in-line-water-resistant-ato-atc](https://www.desertcart.hr/products/10878687-wirthco-31820-battery-doctor-in-line-water-resistant-ato-atc) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-07-30*