---
product_id: 423700993
title: "Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red"
brand: "spartan power"
price: "€ 38.08"
currency: EUR
in_stock: true
reviews_count: 9
category: "Spartan Power"
url: https://www.desertcart.ie/products/423700993-battery-on-off-disconnect-switch-300a-ignition-protected-heavy-duty
store_origin: IE
region: Ireland
---

# 300A continuous current rating Ignition protected up to 900A crank rating Front/rear panel mounting with included screws Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red

**Brand:** spartan power
**Price:** € 38.08
**Availability:** ✅ In Stock

## Summary

> 🔋 Cut the drain, keep the power — Spartan Power Switch means no battery left behind!

## Quick Answers

- **What is this?** Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red by spartan power
- **How much does it cost?** € 38.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/423700993-battery-on-off-disconnect-switch-300a-ignition-protected-heavy-duty)

## Best For

- spartan power enthusiasts

## Why This Product

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

## Key Features

- • **Power That Lasts:** Handles up to 300 amps continuously, ensuring reliable heavy-duty performance for your RV, marine, or automotive battery systems.
- • **Effortless Control:** Simple 2-position rotary knob with a satisfying click for quick, intuitive battery disconnect—no guesswork, just peace of mind.
- • **Versatile Installation:** Designed for front or rear panel mounting with included screws, making setup seamless for professionals and DIYers alike.
- • **Trusted Spartan Quality:** Engineered for rugged environments and trusted by enthusiasts and pros, this switch is your go-to for battery safety and power management.
- • **Ignition-Proof Durability:** Withstands surges up to 900A during ignition, protecting your battery from harmful current spikes and extending its lifespan.

## Overview

The Spartan Power Battery ON/Off Disconnect Switch is a heavy-duty, ignition-protected cutoff switch rated for 300A continuous current and compatible with 12V to 48V systems. Featuring a simple rotary knob, it prevents battery drain by safely disconnecting power in RVs, marine vessels, and automotive applications. Its robust design withstands high ignition surges up to 900A, includes mounting screws for easy installation, and is trusted by professionals for reliable battery management.

## Description

Buy Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red: Battery Switches - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Great battery cutoff switch. - Highly satisfied with this battery cutoff switch. I have two on my boat for the batteries and they have performed excellent.
Review: Hi-Quality Design, Sturdy Construction - This DC electrical on/off shut-off switch is Hi-Grade and perfect for isolating (disconnecting) a battery on tractors and equipment to prevent any perisitic current draw, which could drain a battery dead. When ready to use the equipment, just turn on this switch. It is properly installed into the positive (red) cable where it is first connected to the post. There should be no wire/cable connections between the positive post and the shut-off switch. Any connections that could drain a battery should be wired "after" this switch.

## Features

- Save Your Battery: The Spartan Power On/Off Battery Switch prevents any current from being drawn from the battery when your RV, van, boat, or car is not in use; Disconnect your battery safely and extend its life!
- Ignition Protected: Our switch has a crank rating that withstands 900A for 30 seconds, 500A for 5 minutes, and 300A continuously, protecting against fluctuations in current during ignition
- Simple, 2 Position Design: Our simple design is easy to read and to operate, simply turn the knob to either the On or Off position, and a satisfying click will let you know it's changed
- Screws Included: The casing design allows for front or rear panel mounting, and we are now including screws to facilitate installation on your DC system
- Giving Power to The People: Helping people arm themselves with the right tools and accessories, Spartan Power manufactures ultra-high quality, durable, and heavy duty products; Trusted by professionals, enthusiasts, and DIYers everywhere

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09WZF17KB |
| Actuator Type | Rotary |
| Best Sellers Rank | #21,466 in Automotive ( See Top 100 in Automotive ) #58 in Automotive Replacement Battery Switches |
| Brand | Spartan Power |
| Circuit Type | Single Circuit ON-OFF |
| Color | Red |
| Compatible Devices | RV, marine, and automotive devices requiring 12V to 48V DC power supply |
| Connectivity Protocol | X-10 |
| Connector Type | Screws |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | Knob |
| Current Rating | 300 Amps |
| Date First Available | March 31, 2022 |
| International Protection Rating | IP54 |
| Item Weight | 9.9 ounces |
| Item dimensions L x W x H | 3.25 x 3.25 x 3.6 inches |
| Item model number | SP-BS300A-RED |
| Manufacturer | Spartan Power |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operation Mode | ON-OFF |
| Product Dimensions | 3.25 x 3.25 x 3.6 inches |
| Terminal | Marine |
| UPC | 810019984327 |
| Unit Count | 1.0 Count |
| Vehicle Service Type | RV, Marine, Automotive |
| Wattage | 14400 watts |

## Product Details

- **Brand:** Spartan Power
- **Circuit Type:** Single Circuit ON-OFF
- **Connector Type:** Screws
- **Contact Type:** Normally Open
- **Current Rating:** 300 Amps
- **Item dimensions L x W x H:** 3.25 x 3.25 x 3.6 inches
- **Material:** Copper
- **Operation Mode:** ON-OFF
- **Switch Type:** Kill Switch
- **Terminal:** Marine

## Images

![Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red - Image 1](https://m.media-amazon.com/images/I/61gm46lFOLL.jpg)

## Questions & Answers

**Q: can I use this on a 12 battery bank for a small solar system - max 250amp dc ..... ???**
A: Yes, this switch has a max of 48V, so 12V 250A is fine.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great battery cutoff switch.
*by W***B on December 7, 2025*

Highly satisfied with this battery cutoff switch. I have two on my boat for the batteries and they have performed excellent.

### ⭐⭐⭐⭐⭐ Hi-Quality Design, Sturdy Construction
*by H***L on February 14, 2024*

This DC electrical on/off shut-off switch is Hi-Grade and perfect for isolating (disconnecting) a battery on tractors and equipment to prevent any perisitic current draw, which could drain a battery dead. When ready to use the equipment, just turn on this switch. It is properly installed into the positive (red) cable where it is first connected to the post. There should be no wire/cable connections between the positive post and the shut-off switch. Any connections that could drain a battery should be wired "after" this switch.

### ⭐⭐⭐⭐⭐ Very sturdy switch
*by M***L on May 8, 2024*

Does exactly what it supposed to do. I have two separate 12v battery banks that I charge with two separate charge controllers but want to once in a while combine together for big power draw needs and then sometimes draw from these battery banks separately and this switch does the trick including shutting both banks out when I need to be the case. Works awesome for my needs.

## Frequently Bought Together

- Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red
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*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-02-26*