--- 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: "KD 16.90" currency: KWD in_stock: true reviews_count: 5 category: "Hamolar" url: https://www.desertcart.com.kw/products/401633626-3-pack-300a-circuit-breaker-with-manual-reset-fuse-holder store_origin: KW region: Kuwait --- # 300A high current rating Manual push-button reset Wide temp range -32°C to 82°C 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:** KD 16.90 **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?** KD 16.90 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/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 - • **Built to Endure:** Crafted with premium copper washers and wire lugs for superior conductivity and heat resistance. - • **Reset, Don’t Replace:** Forget fuse swaps—just hit the reset button and keep rolling. - • **Dual Function Kill Switch:** Instantly cut power with the push-button reset doubling as a kill switch for ultimate control. - • **Ultimate Overload Protection:** Safeguard your amps and motors from damaging power surges with 300A capacity. - • **Versatile Voltage Compatibility:** Works seamlessly across 12V to 48V DC systems for cars, boats, RVs, and more. ## Overview The Hamolar 3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder offers robust protection for automotive and marine electrical systems. Designed for 12-48V DC applications, it prevents damage from overloads and short circuits with a high 300A rating. Featuring a convenient push-button reset that doubles as a kill switch, it eliminates the hassle of fuse replacements. Built with durable copper washers and wire lugs, it withstands extreme temperatures from -32°C to 82°C, making it ideal for cars, boats, RVs, and more. ## 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: These are great little breakers for the price. One arrived broken but they were shipped via desertcart Prime so it was no fault of the seller. Would definitely recommend these to others. Review: These are good and work without problems. ## 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 | | ASIN | B095YZN677 | | Best Sellers Rank | #80,146 in Automotive ( See Top 100 in Automotive ) #56 in Car Circuit Breaker Switches | | Brand Name | Hamolar | | Circuit Breaker Type | Standard | | Current Rating | 300 Amps | | Customer Reviews | 4.5 4.5 out of 5 stars (1,793) | | Customer reviews | 4.5 4.5 out of 5 stars (1,793) | | Date First Available | 13 June 2021 | | Item Dimensions D x W x H | 43D x 49W x 43H millimeters | | Item Weight | 110 Grams | | Item model number | CB5-300A | | Manufacturer | Hamolar | | Manufacturer | Hamolar | | Model | CB5-300A | | Mounting Type | Panel Mount | | Number of Poles | 1 | | Part Number | CB5-300A | | Product Dimensions | 7.39 x 4.9 x 4.39 cm; 110 g | | 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) ![3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer - Image 2](https://m.media-amazon.com/images/I/81bciBX6q+L.jpg) ![3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer - Image 3](https://m.media-amazon.com/images/I/71x4wkKL0dS.jpg) ![3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer - Image 4](https://m.media-amazon.com/images/I/71x8o8yciRS.jpg) ![3 Pack 300A Circuit Breaker with Manual Reset Fuse Holder for Car Audio Marine Boat Stereo Switch, with Wire Lugs Copper Washer - Image 5](https://m.media-amazon.com/images/I/714Qxjb94WS.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 ### ⭐⭐⭐⭐⭐ Review *by E***N on 20 November 2023* These are great little breakers for the price. One arrived broken but they were shipped via Amazon Prime so it was no fault of the seller. Would definitely recommend these to others. ### ⭐⭐⭐⭐ Review *by B***N on 6 January 2026* These are good and work without problems. ### ⭐⭐⭐⭐⭐ Review *by J***1 on 2 December 2024* Arrived on time and is exactly what I ordered. I buy Circuit Breaker Fuse and Mega Fuse for my electrical protection. I use Circuit Breakers for branch circuits off the main battery. These branches could be for Audio, EFI computers and even the main electrical connection to the car fuse panel. I've even use these breakers to shut off the car when I leave the car a car show so no one can steal it. I've been very happy with them. The only Con I have is these breakers are not good it high temp locations so keep them away for your exhaust or headers. I had one fail when I mounted it just above my headers even though my hearders were wrapped to reduce heat. Good product overall. Must have and good buy ## 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 - TKDMR 10pcs 1/0 AWG-3/8 Battery Lugs,Heavy Duty Wire Lugs,Ring Terminals,Battery Cable Ends,0 Guage terminals,Battery Terminal Connectors with 10pcs 3:1 Heat Shrink Tubing - TKDMR 160Pcs Copper Wire Lugs AWG2 4 6 8 10 12 with Heat Shrink Set, 80Pcs Battery Cable Ends Ring Terminals Connectors Tubing Assortment Kit --- ## 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.com.kw/products/401633626-3-pack-300a-circuit-breaker-with-manual-reset-fuse-holder](https://www.desertcart.com.kw/products/401633626-3-pack-300a-circuit-breaker-with-manual-reset-fuse-holder) --- *Product available on Desertcart Kuwait* *Store origin: KW* *Last updated: 2026-05-17*