---
product_id: 604442117
title: "Nilight Battery Disconnect Switch 300A Master Disconnect Isolator 12V-48V On Off Power Cutoff Switch Waterproof Heavy Duty for Marine Boat Car RV ATV UTV Yacht, 2 Years Warranty"
brand: "nilight"
price: "₩69479"
currency: KRW
in_stock: true
reviews_count: 8
category: "Nilight"
url: https://www.desertcart.kr/products/604442117-nilight-battery-disconnect-switch-300a-master-disconnect-isolator-12v-48v
store_origin: KR
region: South Korea
---

# 300A continuous rating Waterproof IP54 rating Secure On-Off power isolation Nilight Battery Disconnect Switch 300A Master Disconnect Isolator 12V-48V On Off Power Cutoff Switch Waterproof Heavy Duty for Marine Boat Car RV ATV UTV Yacht, 2 Years Warranty

**Brand:** nilight
**Price:** ₩69479
**Availability:** ✅ In Stock

## Summary

> 🔋 Cut the power, not the adventure — Stay charged, stay ready!

## Quick Answers

- **What is this?** Nilight Battery Disconnect Switch 300A Master Disconnect Isolator 12V-48V On Off Power Cutoff Switch Waterproof Heavy Duty for Marine Boat Car RV ATV UTV Yacht, 2 Years Warranty by nilight
- **How much does it cost?** ₩69479 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/604442117-nilight-battery-disconnect-switch-300a-master-disconnect-isolator-12v-48v)

## Best For

- nilight enthusiasts

## Why This Product

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

## Key Features

- • **Peace of Mind Warranty:** Backed by a 2-year warranty, ensuring your investment is protected and your power system stays secure.
- • **Plug & Play Simplicity:** Straightforward installation with included wiring diagram—get professional-grade power management without the hassle.
- • **Powerhouse Performance:** Handles up to 300 Amps continuous load with 1000 Amps cranking power—built for heavy-duty demands.
- • **Marine-Grade Durability:** Waterproof ABS housing and premium copper terminals ensure corrosion resistance and long-lasting reliability.
- • **Ultimate Battery Control:** Easily disconnect your battery to prevent drain and protect your vehicle or vessel with a simple rotary switch.

## Overview

The Nilight Battery Disconnect Switch is a robust 300A-rated rotary isolator designed for 12-48V systems, perfect for cars, boats, RVs, and ATVs. Featuring waterproof ABS housing and premium copper terminals, it offers reliable, corrosion-resistant power cutoff to prevent battery drain and enhance safety. Easy to install with a clear wiring diagram and backed by a 2-year warranty, this switch delivers heavy-duty performance and peace of mind for professional-grade power management.

## Description

Buy Nilight Battery Disconnect Switch 300A Master Disconnect Isolator 12V-48V On Off Power Cutoff Switch Waterproof Heavy Duty for Marine Boat Car RV ATV UTV Yacht, 2 Years Warranty: Battery Switches - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Does what a cutoff switch should do. Robust enough for big loads or light loads. Piece of mind. - Pretty robust/chunky heavy metal here folks. It will definitely handle some current, and should last quite a good long while. There's not much to go wrong. The coating on the metal appears good quality, not chintzy at all. Large bolts/studs, you're medium eye connectors might not be big enough, but always good to be overkill on gage, right!? So many ways to use this, but as a general rule, try to place as close to your battery source as possible--this just helps to ensure you have no other bleeds/consumers of your battery, and that you get them all, 100% of the time. If you relocate the switch further away, you can be successful, but trust me, there'll come a day when it's just too convenient to wire a new thing directly to the battery and bypass the switch--so just save yourself that future dilemma and make this switch the FIRST and ONLY connected device to your battery. Use a low gage jumper from the positive post to the switch, something like 8 or 10 gage for regular accessories, or maybe even lower if you're going to run a Trolling motor. Either way you wire this, you can count on it. Not much more you can ask of a cutoff, good connectivity for low and high amperage uses. Easy to use, easy on the wallet, easy to install. Great Value for it's functionality.
Review: Power Control Made Simple: Nilight 1-2-Both-Off Battery Switch - As a boat owner, managing power distribution efficiently is essential for a smooth and safe sailing experience. The Nilight 1-2-Both-Off Battery Switch has revolutionized how I control my vessel's electrical system, and I'm thrilled to share my experience with this ingenious product. First and foremost, the versatility of this battery switch is unmatched. With its 1-2-Both-Off functionality, I have complete control over which batteries are connected to my boat's electrical system. Whether I need to isolate a single battery for maintenance or balance the load between multiple batteries for optimal performance, this switch offers unparalleled flexibility. Installation was a breeze, thanks to the straightforward design and clear instructions provided by Nilight. I was able to mount the switch securely in a convenient location and wire it into my boat's electrical system with ease. The sturdy construction and quality materials inspire confidence, ensuring reliable performance even in harsh marine environments. The ergonomic design of the switch makes operation intuitive and hassle-free. The clearly labeled positions—1, 2, Both, and Off—make it easy to select the desired battery configuration quickly and accurately. Whether I'm starting the engine, charging multiple batteries simultaneously, or shutting down the entire electrical system, the Nilight battery switch simplifies the process with just a flick of the wrist. Durability is another standout feature of this product. Built to withstand the demands of marine use, the Nilight battery switch is resistant to corrosion, moisture, and vibration, ensuring long-lasting reliability even in the harshest conditions. I have peace of mind knowing that my electrical system is in good hands with this robust and dependable switch. Safety is always a top priority on the water, and the Nilight battery switch delivers in this regard as well. By providing a convenient means to disconnect the batteries from the electrical system, it helps prevent accidental discharge, electrical fires, and other potential hazards, keeping both my boat and crew safe at all times. In conclusion, the Nilight 1-2-Both-Off Battery Switch is a game-changer for boat owners seeking a reliable and versatile solution for power management. With its ease of installation, intuitive operation, durability, and safety features, it's an essential addition to any marine electrical system. I highly recommend this battery switch to fellow boating enthusiasts who value efficiency, reliability, and peace of mind on the water.

## Features

- Heavy Duty: ABS plastic housing and premium copper terminal, durable made for safety use, not easy to aging and abrasion resistant, to ensure maximum strength and durability for long lasting usage.
- Purpose: eliminate any power from the battery when vehicle or boat is not in use, disconnects the battery safely. Avoid battery drain off.
- Operation: On-Off, 2 positions, Continuous Rating : 300Amps 32VDC Max. Intermittent Rating : 450 Amps, Cranking Rating : 1000 Amps 30 sec.
- Compatible: used for 12 - 32VDC systems to isolate and secure the electrical system, can stand alone or be locked together with other switch.Widely used for cars, marine boats, RVs, campers, travel trailers, trucks, ATVs, UTVs, battery banks and other devices.
- Package include:1x 300A battery disconnect switch with a wiring diagram. 2 Year Warranty by Nilight.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CR5GZ8H6 |
| Actuator Type | Rotary |
| Best Sellers Rank | #521 in Automotive ( See Top 100 in Automotive ) #1 in Automotive Replacement Battery Switches |
| Brand | Nilight |
| Brand Name | Nilight |
| Circuit Type | 1-way |
| Color | On-Off Switch 300A |
| Connectivity Protocol | X-10 |
| Connector Type | Plug In |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Current Rating | 300 Amps |
| Customer Reviews | 4.6 out of 5 stars 6,209 Reviews |
| EU Spare Part Availability Duration | 2 Years |
| Included Components | 1x 300A battery disconnect switch with a wiring diagram |
| International Protection Rating | IP54 |
| Item Dimensions | 1 x 1 x 1 inches |
| Item Height | 1 inches |
| Lower Temperature Rating | 1 Degrees Celsius |
| Manufacturer | Nilight |
| Material Type | Copper, Plastic |
| Model | 90330A |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 1 |
| Operating Voltage | 12 Volts (DC) |
| Operation Mode | ON-OFF |
| Specification Met | 1 |
| Switch Type | Kill Switch |
| Terminal | Screw |
| UPC | 840323914291 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 1 Degrees Celsius |

## Product Details

- **Brand:** Nilight
- **Connector Type:** Plug In
- **Contact Type:** Normally Open
- **Current Rating:** 300 Amps
- **Item dimensions L x W x H:** 1 x 1 x 1 inches
- **Material:** Copper, Plastic
- **Operating Voltage:** 12 Volts (DC)
- **Operation Mode:** ON-OFF
- **Switch Type:** Kill Switch
- **Terminal:** Screw

## Images

![Nilight Battery Disconnect Switch 300A Master Disconnect Isolator 12V-48V On Off Power Cutoff Switch Waterproof Heavy Duty for Marine Boat Car RV ATV UTV Yacht, 2 Years Warranty - Image 1](https://m.media-amazon.com/images/I/61oqNZe2idL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Does what a cutoff switch should do. Robust enough for big loads or light loads. Piece of mind.
*by B***F on December 3, 2025*

Pretty robust/chunky heavy metal here folks. It will definitely handle some current, and should last quite a good long while. There's not much to go wrong. The coating on the metal appears good quality, not chintzy at all. Large bolts/studs, you're medium eye connectors might not be big enough, but always good to be overkill on gage, right!? So many ways to use this, but as a general rule, try to place as close to your battery source as possible--this just helps to ensure you have no other bleeds/consumers of your battery, and that you get them all, 100% of the time. If you relocate the switch further away, you can be successful, but trust me, there'll come a day when it's just too convenient to wire a new thing directly to the battery and bypass the switch--so just save yourself that future dilemma and make this switch the FIRST and ONLY connected device to your battery. Use a low gage jumper from the positive post to the switch, something like 8 or 10 gage for regular accessories, or maybe even lower if you're going to run a Trolling motor. Either way you wire this, you can count on it. Not much more you can ask of a cutoff, good connectivity for low and high amperage uses. Easy to use, easy on the wallet, easy to install. Great Value for it's functionality.

### ⭐⭐⭐⭐⭐ Power Control Made Simple: Nilight 1-2-Both-Off Battery Switch
*by N***N on April 16, 2024*

As a boat owner, managing power distribution efficiently is essential for a smooth and safe sailing experience. The Nilight 1-2-Both-Off Battery Switch has revolutionized how I control my vessel's electrical system, and I'm thrilled to share my experience with this ingenious product. First and foremost, the versatility of this battery switch is unmatched. With its 1-2-Both-Off functionality, I have complete control over which batteries are connected to my boat's electrical system. Whether I need to isolate a single battery for maintenance or balance the load between multiple batteries for optimal performance, this switch offers unparalleled flexibility. Installation was a breeze, thanks to the straightforward design and clear instructions provided by Nilight. I was able to mount the switch securely in a convenient location and wire it into my boat's electrical system with ease. The sturdy construction and quality materials inspire confidence, ensuring reliable performance even in harsh marine environments. The ergonomic design of the switch makes operation intuitive and hassle-free. The clearly labeled positions—1, 2, Both, and Off—make it easy to select the desired battery configuration quickly and accurately. Whether I'm starting the engine, charging multiple batteries simultaneously, or shutting down the entire electrical system, the Nilight battery switch simplifies the process with just a flick of the wrist. Durability is another standout feature of this product. Built to withstand the demands of marine use, the Nilight battery switch is resistant to corrosion, moisture, and vibration, ensuring long-lasting reliability even in the harshest conditions. I have peace of mind knowing that my electrical system is in good hands with this robust and dependable switch. Safety is always a top priority on the water, and the Nilight battery switch delivers in this regard as well. By providing a convenient means to disconnect the batteries from the electrical system, it helps prevent accidental discharge, electrical fires, and other potential hazards, keeping both my boat and crew safe at all times. In conclusion, the Nilight 1-2-Both-Off Battery Switch is a game-changer for boat owners seeking a reliable and versatile solution for power management. With its ease of installation, intuitive operation, durability, and safety features, it's an essential addition to any marine electrical system. I highly recommend this battery switch to fellow boating enthusiasts who value efficiency, reliability, and peace of mind on the water.

### ⭐⭐⭐⭐⭐ Works well
*by K***M on December 18, 2025*

Easy installation. Good quality.

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*Product available on Desertcart South Korea*
*Store origin: KR*
*Last updated: 2026-03-08*