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Spartan Power

Spartan Power Battery ON/Off Disconnect Switch 300A - Ignition Protected, Heavy Duty Cutoff Switch for RV, Marine, and Automotive Battery - 12V to 48V - Red

  • Based on 326 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 17
Order within 22 hours and 14 minutes
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Size: 300A ON/OFF (RED)


Color: Red


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
  • 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

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
  • 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

Operation Mode: Off,On-off


Current Rating: 300 Amps


Connector Type: Screws


Brand: Spartan Power


Terminal: Marine


Item Dimensions LxWxH: 3.25 x 3.25 x 3.6 inches


Mounting Type: Panel Mount


Actuator Type: Rotary


Contact Material: Copper


International Protection Rating: IP54


Product Dimensions ‏ : ‎ 3.25 x 3.25 x 3.6 inches; 9.88 Ounces


Item model number ‏ : ‎ SP-BS300A-RED


Date First Available ‏ : ‎ March 31, 2022


Manufacturer ‏ : ‎ Spartan Power


Best Sellers Rank: #17,106 in Automotive (See Top 100 in Automotive) #30 in Automotive Replacement Battery Switches


#30 in Automotive Replacement Battery Switches:


Customer Reviews: 4.6 4.6 out of 5 stars 136 ratings


Operation Mode: ON-OFF


Current Rating: 300 Amps


Contact Type: Normally Open


Connector Type: Screws


Brand: Spartan Power


Terminal: Marine


Item dimensions L x W x H: 3.25 x 3.25 x 3.6 inches


Circuit Type: Single Circuit ON-OFF


Mounting Type: Panel Mount


Actuator Type: Rotary


Product Dimensions ‏ : ‎ 3.25 x 3.25 x 3.6 inches; 9.88 ounces


Item model number ‏ : ‎ SP-BS300A-RED


Date First Available ‏ : ‎ March 31, 2022


Manufacturer ‏ : ‎ Spartan Power


Best Sellers Rank: #25,395 in Automotive (See Top 100 in Automotive) #57 in Automotive Replacement Battery Switches


#57 in Automotive Replacement Battery Switches:


Customer Reviews: 4.6 4.6 out of 5 stars 326 ratings


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Seems legit
Size: 300A Selector 4 Position Color: Red
Works well with my 2 batteries and seems to be very durable
Reviewed in the United States on July 27, 2025 by TL86
    • Well made
Size: 300A ON/OFF (RED) Color: Red
Review Image by Nick C Nick C
Quality kill switch
Reviewed in the United States on May 24, 2025 by Nick C Nick C
    • Perfect and fits the need!
Size: 300A ON/OFF (RED) Color: Red
Review Image by Jeremy B. Jeremy B.
Works perfect as a direct connect to a Multiplus. Had to drill out the hole bigger for the Lynx distributor, but looks so much cleaner and avoids more cable crimping. Easy on/off. Very good value! Size is perfect too.
Reviewed in the United States on May 29, 2025 by Jeremy B. Jeremy B.
    • Need to know
Size: 600A ON/OFF (GREY) Color: Grey
Nice build but, you need to know it really has 3 "ON" positions and 1 "OFF" position. The switch has 4 positions that you can fell as you turn it. Just know that the 0 is off and 3, 6, and 9 are all on so make sure it is in the off position. The MFG should really update the face label. The two (inputs) are eclectically the same at all times. The switch goes "closed" in all but the off position. ... show more
Reviewed in the United States on April 28, 2024 by Jay
    • Perfect for an RV
Size: 300A ON/OFF (RED) Color: Red
We used this to isolate the solar panels in an RV. Perfect.
Reviewed in the United States on July 2, 2025 by RayRay
    • Great product.
Size: 300A ON/OFF (RED) Color: Red
Great product for a great price
Reviewed in the United States on May 13, 2025 by Troy
    • Hi-Quality Design, Sturdy Construction
Size: 300A ON/OFF (RED) Color: Red
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. ... show more
Reviewed in the United States on February 14, 2024 by Half-Full
    • 300 amp continuous rating
Size: 300A ON/OFF (RED) Color: Red
This is one of the nicest battery disconnect switches I've found for an on-off switch, especially for the price. It works perfect for my lithium iron phosphate batteries/3000 watt inverter/charger. As some reviewers have noted, it did not come with attachment screws. I just purchased the screws I needed from the local hardware store. My inverter is capable of pulling 300+amps continous under a high load, although I usually only load it to 150 amps. Infrared heat gun shows minimal heat rise with 300 amps loading this switch, negligible heat rise at 150 amp. I've noticed issues with switches like this if the cable end is not securely crimped or soldered to the cable. Also, the terminals and cable ends should be cleaned with alcohol before tightening the nut to the proper torque. This helps guard against high resistance that can cause high heat, melting the switch components. I'd recommend this switch to anyone who needs an on-off switch capable of it's rating. ... show more
Reviewed in the United States on July 14, 2022 by Dave

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