---
product_id: 166728493
title: "Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical)"
brand: "a abigail"
price: "€ 44.75"
currency: EUR
in_stock: true
reviews_count: 12
category: "A Abigail"
url: https://www.desertcart.hr/products/166728493-top-post-negative-battery-disconnect-switch-12v-24v-250-750
store_origin: HR
region: Croatia
---

# 2-position ON/OFF knife blade switch 250A continuous / 750A momentary power Heavy-duty solid brass, rust & corrosion resistant Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical)

**Brand:** a abigail
**Price:** € 44.75
**Availability:** ✅ In Stock

## Summary

> 🔌 Cut the power, not the vibe — stay charged, stay ready!

## Quick Answers

- **What is this?** Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical) by a abigail
- **How much does it cost?** € 44.75 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/166728493-top-post-negative-battery-disconnect-switch-12v-24v-250-750)

## Best For

- a abigail enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Crafted from solid brass for unbeatable corrosion resistance and long-term durability—no copper plating compromises here.
- • **Effortless Control:** Simple 2-position ON/OFF knife blade design ensures quick, secure battery isolation with zero hassle.
- • **Powerhouse Performance:** Handles up to 750A momentary current for ultimate reliability in demanding automotive and marine environments.
- • **Peace of Mind Guarantee:** Backed by responsive customer service and satisfaction guarantee, so you never get left powerless.
- • **Universal Compatibility:** Perfectly fits 12V and 24V systems across cars, RVs, boats, and ATVs—your all-in-one power cutoff solution.

## Overview

The Top Post Negative Battery Disconnect Switch is a robust, solid brass knife blade isolator designed for 12V and 24V systems. Supporting 250A continuous and 750A momentary currents, it offers reliable ON/OFF control to prevent battery drain in vehicles, boats, and RVs. Easy to install and corrosion-resistant, it ensures long-lasting performance and safety with a satisfaction guarantee.

## Description

Buy Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical): Battery Switches - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: perfect for classic vehicles or field equipment - Robust and awesome Perfect for long term vehicle storage Stops parasitic draw Easy to operate Considerable size and definitely not flimsy You will need to minor modification for battery to switch mount hole and expect to make tightness adjustment for throw switch for your application Saves terminal strip out if working on vehicles a lot connect/disconnect simple flip of switch
Review: Easy installation and works perfect - Easy to install and easier to use

## Features

- 【High Quality】A ABIGAIL Top Post Knife Blade Master Switch is made of Heavy Duty solid brass which is rust and corrosion resistant, durable made for safety use. 【Note: Please Do Not choose the Material of brass plated with copper】
- 【Operation】On/Off 2 position, Battery negative pole 15.5mm-17mm, DC 12V-24V system, 250A continuous and 750A momentary at DC 12V.
- 【Application & Easy to Use】Battery NEGATIVE post only, Widely used for Car, Vehicle, RV, ATV and Boat batteries, also used for electrical equipment. Vertical knife blade type, easy to install & simple to use.
- 【Function】 used for battery to isolate and secure the electrical system, eliminate any power draw from the battery when vehicle or boat is not in use, disconnects the battery safely.
- 【100% satisfaction guarantee】If you have any issues with our Battery Disconnect Switch, simply contact customer service for troubleshooting help, parts, replacement, or refund. Our aim is to make you satisfy the parts and the service we provide for you.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Z4R7W2D |
| Actuator Type | Hinge Lever |
| Best Sellers Rank | #8,083 in Automotive ( See Top 100 in Automotive ) #21 in Automotive Replacement Battery Switches |
| Brand | A ABIGAIL |
| Circuit Type | 2-way |
| Color | Top Post (Horizontal & Vertical) |
| Connectivity Protocol | X-10 |
| Connector Type | Crimp |
| Contact Type | Normally Closed |
| Control Method | App |
| Current Rating | 750 Amps |
| Customer Reviews | 4.4 4.4 out of 5 stars (2,045) |
| Date First Available | January 8, 2018 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.6 ounces |
| Item dimensions L x W x H | 4 x 3 x 3 inches |
| Item model number | A5206C |
| Manufacturer Part Number | A5206C |
| Mounting Type | Panel Mount |
| Number of Positions | 2 |
| Operating Voltage | 24 Volts |
| Operation Mode | ON-OFF |
| Product Dimensions | 4 x 3 x 3 inches |
| Terminal | Solder |
| Unit Count | 1 Count |

## Product Details

- **Brand:** A ABIGAIL
- **Connector Type:** Crimp
- **Contact Type:** Normally Closed
- **Current Rating:** 750 Amps
- **Item dimensions L x W x H:** 4 x 3 x 3 inches
- **Material:** Brass
- **Operating Voltage:** 24 Volts
- **Operation Mode:** ON-OFF
- **Switch Type:** DIP Switch
- **Terminal:** Solder

## Images

![Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical) - Image 1](https://m.media-amazon.com/images/I/71whFBA5zRL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ perfect for classic vehicles or field equipment
*by T***D on October 8, 2025*

Robust and awesome Perfect for long term vehicle storage Stops parasitic draw Easy to operate Considerable size and definitely not flimsy You will need to minor modification for battery to switch mount hole and expect to make tightness adjustment for throw switch for your application Saves terminal strip out if working on vehicles a lot connect/disconnect simple flip of switch

### ⭐⭐⭐⭐⭐ Easy installation and works perfect
*by A***E on December 8, 2025*

Easy to install and easier to use

### ⭐⭐⭐⭐ Great concept, could be a better in design. Still recommended
*by A***P on March 18, 2024*

Car batteries have near doubled in cost within 5 years. And the worst thing you can do to a battery is let it drain down to dead. If you have a vehicle that sits a lot, I highly recommend to either disconnect the battery or to take the time to charge it occasionally. That brings me to this product. I've used it twice now, previously on a side mount and then installed this weekend on a top mount. Here's my takeaway. The mechanism can be disassembled to arrange either the lever or the post mount on either side. But with the design, the lever and post mount always have to face the same way as each other. The offset mounting screw prevents either one from being turned around by 180 degrees. This mechanism is fairly big. If you have a top mount, make sure there is ample clearance when closing the hood. Id say a good 2 inches is needed from the top of the battery to the bottom of the hood for this to clear. I had better clearance with the side post version as it doesn't protrude up or out as far as the top post mount version I had to free up some length on my negative battery terminals to reach the new, taller terminal post. Thankfully, the solution was only to pop off one cable retainer about a foot below the battery terminal. That let me route the battery cable at a slightly different angle and freed up a few inches in length. Things that could be better; The plastic bracket that both the lever and the post mount to is fairly flimsy. It's not a solid piece of plastic as I feel it should be. It's hollowed on the back side. I wouldn't be surprised if it breaks over the course of several years. It definitely could be designed slightly smaller, or at least more flush to the battery. The allen head bolt and locking nut that act as the hinge pin for the lever was very loose. The nut was a dozen turns away from being tight. This bolt / nut set the tension on the lever arm, tighten accordingly. Each side of this mechanism has a Phillips head bolt that secures the post mount and the lever arm to its plastic bracket ( the one I feel should be a solid piece ) The tread contact points for this connection is dismal. It's the equivalent of threading a machine screw into a thick piece of sheet metal. I would highly recommend adding thread locker to those bolts. All in all, this thing is cheap and it's construction reflects it. Nevertheless, it's also cheap insurance and a great tool to help prolong the life of a recreational vehicle's battery. Don't hesitate to work with it to make it a little better or fit better for your application. But be gentle to some degree. Others have mentioned they've broken it during install. I could see that but I'd still put that back on them for being too forceful. If you have a vehicle that doesn't get driven much and you have a little bit of mechanic knowhow, give it this a shot. But don't set expectations too high. It works, it does, but yes, it could have been better.

## Frequently Bought Together

- Top Post Negative Battery Disconnect Switch 12V / 24V 250/750 Amps Knife Blade Isolator Power Cutoff Switch for Marine Car Boat RV ATV (Horizontal and Vertical)
- Side Post Knife Blade Master Switch, Ampper 12V / 24V Battery Disconnect Switch Isolator for Marine Car Boat RV ATV Vehicles (with Long Bolt)
- Top Post Knife Blade Master Switch, 12V 24V Battery Disconnect Switch for Auto Car RV-Marine Boat Truck Vehicle, Battery Cut Off Shut Off Switch (Negative,Vertical)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-03-06*