---
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: "₱1892"
currency: PHP
in_stock: true
reviews_count: 13
url: https://www.desertcart.ph/products/166728493-top-post-negative-battery-disconnect-switch-12v-24v-250-750
store_origin: PH
region: Philippines
---

# Marine-grade corrosion-resistant solid brass Dual-position ON/OFF knife blade isolator 250A continuous / 750A momentary power cutoff 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:** ₱1892
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut the power, not your adventures – stay charged and in control!

## 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?** ₱1892 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/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

- • **Effortless Isolation:** Simple ON/OFF two-position switch to instantly cut power and prevent battery drain.
- • **Marine-Grade Durability:** Crafted from heavy-duty solid brass to resist rust and corrosion in harsh environments.
- • **Peace of Mind Guarantee:** Backed by responsive customer service and satisfaction promise for worry-free use.
- • **Unmatched Power Control:** Handles up to 750A momentary current for ultimate battery protection.
- • **Versatile Compatibility:** Perfect for cars, boats, RVs, ATVs, and all 12V/24V battery systems.

## Overview

The A ABIGAIL Top Post Negative Battery Disconnect Switch is a robust, brass-made knife blade isolator designed for 12V/24V systems. Supporting 250A continuous and 750A momentary currents, it ensures safe and easy battery isolation for vehicles, boats, RVs, and ATVs. Its corrosion-resistant build and simple ON/OFF operation make it a reliable choice to prevent battery drain and protect your electrical system.

## Description

Top Post Knife Blade Battery Switch is used for battery to isolate and secure the electrical system, eliminate any power drain from the battery when vehicle or boat are not in use, disconnect the battery safely.  Widely used for Car, Vehicle, RV and Boat batteries which have a standard 15-17 mm cone top post terminal, also used for electrical equipment.

## 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 |
|---------------|-------|
| Actuator Type | Hinge Lever |
| Asin | B07Z4R7W2D |
| Best Sellers Rank | #8,866 in Automotive (See Top 100 in Automotive) #16 in Automotive Replacement Battery Switches |
| Brand Name | A ABIGAIL |
| Circuit Type | 2-way |
| Color | Top Post (Horizontal & Vertical) |
| Compatible Devices | Car, Vehicle, RV, ATV, Boat |
| Compatible With Vehicle Type | Car, Vehicle, RV, ATV, Boat |
| Connectivity Protocol | X-10 |
| Connector Type | Crimp |
| Contact Material | Brass |
| Contact Type | Normally Closed |
| Control Method | App |
| Current Rating | 750 A |
| Customer Reviews | 4.5 4.5 out of 5 stars (2,147) 4.5 out of 5 stars |
| Item Dimensions | 4 x 3 x 3 inches |
| Item Weight | 1.6 ounces |
| Material Type | Brass |
| Model | A5206C |
| Mounting Type | Panel Mount |
| Number Of Positions | 2 |
| Operating Voltage | 24 volts |
| Operation Mode | ON-OFF |
| Part Number | A5206C |
| Switch Type | DIP Switch |
| Terminal | Solder |
| Unit Count | 1 Count |

## Product Details

- **Brand:** A ABIGAIL
- **Connector Type:** Crimp
- **Contact Type:** Normally Closed
- **Current Rating:** 750 A
- **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)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good product.
*by  on Reviewed in the United States July 5, 2026*

I had a short I could not isolate on a 4Runner with reoccurring dead battery. This solved the problem. Purchased the open upwards model. Works well if you have enough space under the hood. Will not rust. Highly recommend.

### ⭐⭐⭐⭐⭐ Good disconnect
*by  on Reviewed in the United States August 15, 2026*

Works as it should…..

### ⭐⭐⭐⭐ Great concept, could be a better in design. Still recommended
*by  on Reviewed in the United States 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 versionI 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 Philippines*
*Store origin: PH*
*Last updated: 2026-10-11*