---
product_id: 518343259
title: "Spartan Power 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: "R$749"
currency: BRL
in_stock: true
reviews_count: 5
category: "Spartan Power"
url: https://www.desertcart.com.br/products/518343259-spartan-power-battery-on-off-disconnect-switch-300a-ignition-protected
store_origin: BR
region: Brazil
---

# 900A cranking surge capacity 300A continuous current rating Front/rear panel mounting with screws included Spartan Power 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:** R$749
**Availability:** ✅ In Stock

## Summary

> 🔋 Take charge, cut the drain, and power up like a pro!

## Quick Answers

- **What is this?** Spartan Power 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?** R$749 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/products/518343259-spartan-power-battery-on-off-disconnect-switch-300a-ignition-protected)

## 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 Surge Proof:** Ignition protected with a 900A cranking rating—built to handle the toughest starts without fail.
- • **Effortless Control:** Simple 2-position rotary switch with a satisfying click for intuitive on/off operation.
- • **Versatile Mounting:** Designed for front or rear panel installation with included screws—fits seamlessly into any setup.
- • **Trusted Heavy-Duty Build:** Crafted with tinned copper terminals and UL certification, Spartan Power delivers professional-grade durability.
- • **Ultimate Battery Guardian:** Cut power draw completely to extend your battery’s lifespan and avoid costly replacements.

## Overview

The Spartan Power Battery ON/Off Disconnect Switch is a heavy-duty, ignition-protected rotary switch rated for 300A continuous current and up to 900A surge. Designed for RV, marine, and automotive use, it features a simple 2-position design, versatile mounting options with included screws, and robust copper terminals. This UL-certified switch ensures safe battery isolation to extend battery life and prevent power drain when vehicles or equipment are idle.

## Description

Take Control - Save your battery and control your DC current with the Spartan Power Mini On/Off Switch, a simple yet durable and effective knob-type switch that allows you to completely remove the power being drawn from your battery or solar installation when not in use, preventing unnecessary wear and extending the life of your battery or power bank. Case design allows surface, front panel, or rear panel mounting. The Isolating cover with snap-on sections protects rear contacts. The Spartan Power battery switch has a crank rating of 900A for 30 seconds, 500A for 5 minutes and 300A continuous rating. Spartan Power 300A ON/OFF Battery Switch Specifications: Switch Type: Single Circuit ON-OFF; Switch Positions: 2; Battery Combine: No; Alternator Field Disconnect: No; Maximum Voltage: 48V DC; Stud Size: 3/8″; Terminal Stud Torque: 120 in-lb (13.56 Nm); Continuous Rating: 300A; Intermittent Rating: 500A (5 min); Cranking Rating: 900A (30 seconds); Battery Inputs: 1; Cable Clearance For 4/0 AWG Cables 1.12in (28.45mm); Cable Size to Meet Ratings: 4/0 AWG (120mm²); Mounting Holes: Accept #10 Screw; Stud Material: Tinned Copper; Stud Torque: 120 in-lb (13.56 Nm); Terminal Stud Size: 3/8″ – 16(M10); Weight: 0.6 lbs

Review: Good product. - I bought this one and a cheaper one. Buy the cheaper on. Except for being a darket color and having a name on it they both are identical
Review: Works as advertised! - Does what it is supposed to do. I am using 2/0 cable and had to trim the case a bit to make them fit. so make sure your wire and lugs are smaller than 2/0 or trimming will be necessary.

## 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 | Push Button |
| Best Sellers Rank | 597,241 in Automotive ( See Top 100 in Automotive ) 1,177 in Car Battery Switches |
| Brand | Spartan Power |
| Circuit Type | 2-way |
| Colour | Red |
| Connectivity Protocol | Wi-Fi |
| Connector Type | screws |
| Connector type | screws |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Contact type | Normally Open |
| Controller Type | Push Button |
| Current Rating | 300 Amps |
| Current rating | 300 Amps |
| Customer Reviews | 4.7 out of 5 stars 286 Reviews |
| International Protection Rating | IP54 |
| Item Dimensions | 8.3 x 8.3 x 9.1 centimetres |
| Manufacturer | Spartan Power |
| Manufacturer Part Number | SP-BS300A-RED |
| Material | Copper |
| Model Number | SP-BS300A-RED |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operation Mode | Off,On-off |
| Operation mode | Off,On-off |
| Specification Met | UL |
| Switch Type | Rotary |
| Switch type | Rotary |
| Terminal | marine |
| UPC | 810019984327 |
| Unit Count | 1.0 count |
| Wattage | 14400 watts |

## Product Details

- **Brand:** Spartan Power
- **Circuit type:** 2-way
- **Connector type:** screws
- **Contact type:** Normally Open
- **Current rating:** 300 Amps
- **Item dimensions L x W x H:** 8.3 x 8.3 x 9.1 centimetres
- **Material:** Copper
- **Operation mode:** Off,On-off
- **Switch type:** Rotary
- **Terminal:** marine

## Images

![Spartan Power 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)
![Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red - Image 2](https://m.media-amazon.com/images/I/712Je3xRR5L.jpg)
![Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red - Image 3](https://m.media-amazon.com/images/I/71bIe-LFsYL.jpg)
![Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red - Image 4](https://m.media-amazon.com/images/I/71Hu2ywZLtL.jpg)
![Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red - Image 5](https://m.media-amazon.com/images/I/71xQD1JUFzL.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

### ⭐⭐⭐⭐⭐ Good product.
*by R***4 on 1 July 2026*

I bought this one and a cheaper one. Buy the cheaper on. Except for being a darket color and having a name on it they both are identical

### ⭐⭐⭐⭐⭐ Works as advertised!
*by B***Z on 1 July 2026*

Does what it is supposed to do. I am using 2/0 cable and had to trim the case a bit to make them fit. so make sure your wire and lugs are smaller than 2/0 or trimming will be necessary.

### ⭐⭐⭐⭐⭐ Solid, durable and built to last.
*by R***S on 19 January 2026*

Used this on a travel trailer and installed it right on the battery box. Was easy to wire in and seems well made and durable. Connection posts are solid. I think this will hold up to the elements and is a good protection for my trailer. I did need to buy a different set of nuts and bolts for my specific application, but that was expected.

## 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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**Shop now:** [https://www.desertcart.com.br/products/518343259-spartan-power-battery-on-off-disconnect-switch-300a-ignition-protected](https://www.desertcart.com.br/products/518343259-spartan-power-battery-on-off-disconnect-switch-300a-ignition-protected)

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*Product available on Desertcart Brazil*
*Store origin: BR*
*Last updated: 2026-10-16*