---
product_id: 401633626
title: "3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer"
brand: "hamolar"
price: "24768 Ft"
currency: HUF
in_stock: true
reviews_count: 5
category: "Hamolar"
url: https://www.desertcart.hu/products/401633626-3-pack-300a-circuit-breaker-with-manual-reset-fuse-holder
store_origin: HU
region: Hungary
---

# 300A high current capacity Manual push-button reset & kill switch -32°C to 82°C wide temp range 3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer

**Brand:** hamolar
**Price:** 24768 Ft
**Availability:** ✅ In Stock

## Summary

> ⚡ Reset Your Power Game — Stay Protected, Stay Ahead!

## Quick Answers

- **What is this?** 3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer by hamolar
- **How much does it cost?** 24768 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/401633626-3-pack-300a-circuit-breaker-with-manual-reset-fuse-holder)

## Best For

- hamolar enthusiasts

## Why This Product

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

## Key Features

- • **Reset & Go:** Forget fuse replacements—reset instantly with a simple push-button switch.
- • **Built to Endure:** Operates flawlessly from freezing -32°C to scorching 82°C environments.
- • **Plug & Play Ready:** Includes wire lugs and copper washers for quick, professional panel or firewall mounting.
- • **Powerhouse Protection:** Safeguards amps & batteries from overloads and short circuits with 300A capacity.
- • **Versatile Voltage Range:** Compatible with 12V to 48V DC systems, perfect for cars, boats, RVs, and more.

## Overview

The Hamolar 3 Pack 300A Circuit Breaker is a robust manual reset fuse holder designed for automotive and marine audio systems. It protects your equipment from overloads and short circuits with a high 300A rating, supports 12-48V DC systems, and operates reliably across extreme temperatures. Featuring a push-button reset that doubles as a kill switch, it eliminates fuse replacements and ensures quick recovery. Complete with wire lugs and copper washers, it’s engineered for easy installation and long-lasting durability.

## Description

Hamolar Circuit Breaker Reset Fuse No need to keep replacing fuses anymore, simply reset breaker and you are ready to go. Description: This Circuit Breaker offers critical protection to your system. When the system is over power or short circuit, the breaker will cut and save your equipment. No need to replace the fuses, the system can be reset by a simple switch which also offers safe and instant system shut down. Specifications: Ampere range: 300A. Ampere Optional: 30A / 50A / 80A / 100A / 150A / 200A / 250A / 300A. Voltage: 12V-48V DC. Ambient Temperature: -32 ° c to 82 ° c (-25 ° f to 180 ° f). Size: 74mm (L) x 49mm (W) x 44mm (H) / (2.9*1.9*1.7 IN). Package Included: ·3pc x 300A Car Circuit Breaker ·6pc x 6*1/4 Terminal connectors and washer Features: ·Stops power surges from damaging your amps ,protects your trolling motor from electrical damage. ·Mount on panel or firewall unique push button reset can also be used as a kill switch. ·No more spending money on replacing fuses. ·Good conductivity and craftsmanship, high temperature pressure. ·Application: Typically used in auxiliary and accessory circuits for Boat, Trucks, Buses, Marine, RV and ATV applications. Also can used as an on/off button switch for the battery or DC sound system.

Review: Using in kawasaki mule - Works great
Review: excellent product - works great

## Features

- · Function: This circuit breaker can protect the amplifier from being damaged by the over-load current or voltage. Meanwhile, the power supply can also be protected to avoid battery crack and explosion caused by short circuit.
- · Specification: Voltage 12-48V DC, compatible with all 12V/24V Systems. Ambient temperature: -32 ° c to 82 ° c (-25 ° f to 180 ° f) ，Accessories added wire lugs and Copper washer.
- · Manual Reset Circuit Breaker, Use in place of an inline fuse holder, the unique push button reset can also be used as a Kill Switch.
- · Protects your trolling motor from electrical damage, prevents excessive current and stops power surges from damaging Amps.
- · Application: Suitable for car audio/video system, boat, trucks, buses, RV's, ATV winches, marine and DC sound amplifier system overload protection.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B095YZN677 |
| Best Sellers Rank | #117,316 in Automotive ( See Top 100 in Automotive ) #78 in Car Circuit Breaker Switches |
| Brand | Hamolar |
| Brand Name | Hamolar |
| Circuit Breaker Type | Standard |
| Circuit breaker type | Standard |
| Current Rating | 300 Amps |
| Current rating | 300 Amps |
| Customer Reviews | 4.5 out of 5 stars 1,715 Reviews |
| Item Dimensions D x W x H | 43D x 49W x 43H millimeters |
| Item Weight | 110 Grams |
| Manufacturer | Hamolar |
| Model | CB5-300A |
| Mounting Type | Panel Mount |
| Mounting type | Panel Mount |
| Number of Poles | 1 |
| Number of poles | 1 |
| Product dimensions | 43D x 49W x 43H millimeters |
| UPC | 721703426408 |
| Voltage | 12 Volts, 24 Volts |

## Product Details

- **Brand:** Hamolar
- **Circuit breaker type:** Standard
- **Current rating:** 300 Amps
- **Mounting type:** Panel Mount
- **Product dimensions:** 43D x 49W x 43H millimeters

## Images

![3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer - Image 1](https://m.media-amazon.com/images/I/71XUF5RC5ML.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can electricity flow in both directions through this circuit breaker - charge and discharge?**
A: It is basically an inline fuse. I have mine with the source being my panels and a fuse placed before going into my charge controller. I am running one unit on both + and - of the solar panel before it goes into charge controller and I also run one unit on both  + and - as it exits my charge controller going to the battery bank. using 4 units  total.  Which direction you wish to direct your electrical current should not mater, if the amps surge it should trip the fuse. Just put it in front of the unit you are trying to protect. In my case protecting solar charger from solar panels before going into solar charge controller and from battery bank before going in to solar charge controller.

**Q: Will 3/8"lugs work on this**
A: Yes, use a star washer to secure the larger lug.

**Q: what size is recommended for a 3500 watt set up?**
A: Ryan, I do not know if you are talking about pulling 3500 watts DC or if you are connecting and inverter 3500 watt from DC.

If you are talking about use a 3500 ac watts inverter, I need to know at whar voltage ia the DC in for the inverter. The amps at 12v , 24v , 36v and 48v  are differents, in the inveeter, at higher to increase from DC to AC in the inverter, higher will be the amps it pull from the batteries that can be in serie for those DC voltage. If you are pulling 3500 watts in DC from batteries, just calculate an average of 100 watts per amp. 3500 watts can be 350 amps.

**Q: I am looking for a drawing of the hole pattern to incorporate the parts in an assemlby kit. do you have a step file or such of the part.**
A: L 3" x W 1 3/4" H 1 1/4" mounting holes are 1 1/2" diagonal. Make sure you read other people questions just not the reviews. Cheers

## Customer Reviews

### ⭐⭐⭐⭐⭐ Using in kawasaki mule
*by E***T on 12 January 2026*

Works great

### ⭐⭐⭐⭐⭐ excellent product
*by E***R on 12 June 2025*

works great

### ⭐⭐⭐⭐ Satisfactory
*by D***K on 8 April 2024*

First order got cancelled and refunded, second time delivered before expected date. Product just put into use. Will update usage after 3 months.

## Frequently Bought Together

- Hamolar 3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer
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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-03-17*