---
product_id: 508783518
title: "40 AMP Car Circuit Breaker w/Manual Reset Switch Inline Fuse Holder Inverter for Motor Trolling Vehicles Audio Radio Solar System Protection 12V-48V DC with Wire Lugs Copper Washer Screws"
brand: "red wolf"
price: "€ 34.08"
currency: EUR
in_stock: true
reviews_count: 12
category: "Red Wolf"
url: https://www.desertcart.sk/products/508783518-40-amp-car-circuit-breaker-w-manual-reset-switch-inline
store_origin: SK
region: Slovakia
---

# IP67 waterproof rating 40A high-current protection Manual push-button reset 40 AMP Car Circuit Breaker w/Manual Reset Switch Inline Fuse Holder Inverter for Motor Trolling Vehicles Audio Radio Solar System Protection 12V-48V DC with Wire Lugs Copper Washer Screws

**Brand:** red wolf
**Price:** € 34.08
**Availability:** ✅ In Stock

## Summary

> ⚡ Protect, Reset, Repeat — Power Control Made Effortless

## Quick Answers

- **What is this?** 40 AMP Car Circuit Breaker w/Manual Reset Switch Inline Fuse Holder Inverter for Motor Trolling Vehicles Audio Radio Solar System Protection 12V-48V DC with Wire Lugs Copper Washer Screws by red wolf
- **How much does it cost?** € 34.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/508783518-40-amp-car-circuit-breaker-w-manual-reset-switch-inline)

## Best For

- red wolf enthusiasts

## Why This Product

- Trusted red wolf brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Weatherproof Durability:** IP67-rated splash and dust proof design ensures peak performance in marine, automotive, and outdoor environments.
- • **Premium Copper Components:** Pure copper screws, washers, and wire lugs deliver superior conductivity and corrosion resistance for long-lasting reliability.
- • **Compact & Easy Installation:** Streamlined panel or firewall mount with included hardware makes upgrading your system hassle-free and sleek.
- • **Instant Manual Reset & Kill Switch:** Easily reset or instantly disconnect circuits with a visible, tactile push-button lever—control at your fingertips.
- • **Reliable 40 Amp Overcurrent Defense:** Safeguard your vehicle and gear with robust 40A circuit protection designed for 12V-48V DC systems.

## Overview

The RED WOLF 40 AMP Car Circuit Breaker is a compact, high-performance inline fuse holder designed for 12V to 48V DC systems. Featuring a manual push-button reset that doubles as a kill switch, it offers reliable overcurrent protection for automotive, marine, and solar applications. Built with premium copper hardware and an IP67 waterproof rating, this breaker ensures durable, corrosion-resistant operation in harsh environments. Easy to install with included mounting screws and wire lugs, it’s the smart choice for professionals seeking dependable circuit safety and control.

## Description

Buy RED WOLF 40 AMP Car Circuit Breaker w/Manual Reset Switch Inline Fuse Holder Inverter for Motor Trolling Vehicles Audio Radio Solar System Protection 12V-48V DC with Wire Lugs Copper Washer Screws: Circuit Breaker - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Simple to install and nice compact size - I got this circuit breaker to use instead of a 40amp inline fuse for a DC-DC charger on my boat. I wanted the ability to easily disable the charger by breaking the input current from the input battery to the charger. The installation was simple. It came with two mounting screws which was convenient. It also came with a set of raw copper 1/4" ring crimp connectors. This would also have been handy if they weren't for 6 AWG wire. I only need 10 AWG wire for this project. They also supplied 4 raw copper washers for the 1/4" studs. I'd prefer tinned copper but these will work well. I always use NO-Ox-ID grease on all electric connections anyway. They supplied external tooth hex lock nuts for the 1/4" posts. These are fine, but I prefer split ring lock washers. However, the external tooth nuts seem to hold well. The spring loader breaker was easy to open with the push button and was reset with a good positive click. When the breaker is open, it is obvious. I've not had occasion to test its reliability in breaking the connection if the current exceeds it 40 amp rating. That is after all the reason for having it, to protect the wires in case of a short.
Review: Love it!! - Works great, the water proof feature works perfect for me and was a top selling point! It’s not flimsy and quality is excellent. I like the compact size because it doesn’t stand out a whole ton.

## Features

- Manual reset: Visible reset lever shows open condition, unique push button reset Can also be used as a kill switch; Button on circuit breaker can act as a master disconnect for circuits
- Suitable for a wide range of DC system voltages from 12V to 48V; Designed to protect the system from over-current as a result of high power draw, short-circuits, wiring mistakes, equipment faults or any other high current event;With mount cover protective the stud to be isolated, splash and dust proof
- Straightforward to install: 40A DC 12V - 48V; Car Audio Inline Breaker Circuit Fuse 40A,use in place of an inline fuse holder; The circuit breaker can be mounted on panel or firewall
- Application: used in auxiliary and accessory circuits for fit to Boat Marine RV Yacht Battery Trailer Bus Truck ATV Winches applications; Also used in battery charges and DC sound amplifier system
- Professional material: The screw inside is made of pure copper; It is also water resistant IP67; Use the waterproof cover to better prevent rust from metal parts

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BRV89YBZ |
| Best Sellers Rank | #7,126 in Automotive ( See Top 100 in Automotive ) #9 in Automotive Replacement Circuit Breaker Switches |
| Brand Name | RED WOLF |
| Circuit Breaker Type | Standard |
| Current Rating | 40 Amps |
| Customer Reviews | 4.7 4.7 out of 5 stars (363) |
| Included Components | 40 AMP Car Circuit Breaker |
| Item Dimensions D x W x H | 3"D x 1.9"W x 1.4"H |
| Manufacturer | RED WOLF |
| Model | RWF-BXS-D40 |
| Mounting Type | Panel Mount |
| Number of Poles | 1 |
| Part Number | RWF-BXS-D40 |
| Voltage | 48 Volts |

## Product Details

- **Brand:** RED WOLF
- **Circuit Breaker Type:** Standard
- **Current Rating:** 40 Amps
- **Mounting Type:** Panel Mount
- **Product Dimensions:** 3"D x 1.9"W x 1.4"H

## Images

![40 AMP Car Circuit Breaker w/Manual Reset Switch Inline Fuse Holder Inverter for Motor Trolling Vehicles Audio Radio Solar System Protection 12V-48V DC with Wire Lugs Copper Washer Screws - Image 1](https://m.media-amazon.com/images/I/81uev+sumqL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Simple to install and nice compact size
*by D***S on September 12, 2024*

I got this circuit breaker to use instead of a 40amp inline fuse for a DC-DC charger on my boat. I wanted the ability to easily disable the charger by breaking the input current from the input battery to the charger. The installation was simple. It came with two mounting screws which was convenient. It also came with a set of raw copper 1/4" ring crimp connectors. This would also have been handy if they weren't for 6 AWG wire. I only need 10 AWG wire for this project. They also supplied 4 raw copper washers for the 1/4" studs. I'd prefer tinned copper but these will work well. I always use NO-Ox-ID grease on all electric connections anyway. They supplied external tooth hex lock nuts for the 1/4" posts. These are fine, but I prefer split ring lock washers. However, the external tooth nuts seem to hold well. The spring loader breaker was easy to open with the push button and was reset with a good positive click. When the breaker is open, it is obvious. I've not had occasion to test its reliability in breaking the connection if the current exceeds it 40 amp rating. That is after all the reason for having it, to protect the wires in case of a short.

### ⭐⭐⭐⭐⭐ Love it!!
*by P***E on July 29, 2025*

Works great, the water proof feature works perfect for me and was a top selling point! It’s not flimsy and quality is excellent. I like the compact size because it doesn’t stand out a whole ton.

### ⭐⭐⭐⭐⭐ Just put the doctor ordered
*by L***L on February 12, 2026*

Bought this to use on my Jon boat so that I would have a fuse line going to my battery and it works perfect

## Frequently Bought Together

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- RED WOLF 20A Circuit Breaker Holder W/Manual Reset Switch 12-48V DC for Boat Trolling Motor Marine ATV Trailer Vehicles Stereo Audio Electronic Battery Fuse Solar Power System, 20 Amp Screws

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-05-16*