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🔋 Cut the power, not the adventure – Spartan Power keeps you in control!
The Spartan Power Battery ON/Off Disconnect Switch delivers a robust 300A continuous current rating with ignition protection up to 900A crank rating, making it ideal for RVs, marine, and automotive applications. Featuring a simple rotary knob for quick battery disconnection, it prevents power drain and extends battery life. Designed for easy front or rear panel mounting with included screws, this heavy-duty switch is trusted by professionals and enthusiasts for reliable, long-lasting performance in demanding environments.
| ASIN | B09WZF17KB |
| Actuator Type | Rotary |
| Best Sellers Rank | #41,112 in Automotive ( See Top 100 in Automotive ) #94 in Automotive Replacement Battery Switches |
| Brand | Spartan Power |
| Brand Name | Spartan Power |
| Circuit Type | Single Circuit ON-OFF |
| Color | Red |
| Compatible Devices | RV, marine, and automotive devices requiring 12V to 48V DC power supply |
| Compatible with Vehicle Type | RV, Marine, Automotive |
| Connectivity Protocol | X-10 |
| Connector Type | Screws |
| Contact Material | Copper |
| Contact Type | Normally Open |
| Control Method | Touch |
| Control Type | Knob |
| Current Rating | 300 Amps |
| Customer Reviews | 4.7 out of 5 stars 340 Reviews |
| International Protection Rating | IP54 |
| Item Dimensions | 3.25 x 3.25 x 3.6 inches |
| Manufacturer | Spartan Power |
| Material Type | Copper |
| Model | SP-BS300A-RED |
| Mounting Type | Panel Mount |
| Number of Items | 1 |
| Number of Positions | 2 |
| Operation Mode | ON-OFF |
| Part Number | SP-BS300A-RED |
| Switch Type | Kill Switch |
| Terminal | Marine |
| UPC | 810019984327 |
| Unit Count | 1.0 Count |
| Wattage | 14400 watts |
W**B
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.
R**S
Solid, durable and built to last.
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.
J**.
Easy and cheap disconnect
Good solid switch. Easy solution for battery disconnect
J**Y
Try it out before mounting
Does what it should but it is difficult to turn on/off. I recommend putting it in a location that is easy to access. Try it before you mount it.
H**L
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.
B**D
Very good quality
This works very good, components are top notch, used as a master disconnect on an off grid solar system works perfect.
J**.
Perfect and fits the need!
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.
L**P
Most widely used power disconnect for Motorhomes.
I added this in for control of my new LiFePo4 batteries to protect against charging/Discharging in very cold weather and during maintenance. You cannot work on this system without a way to disconnect all power positively! I have a Class A Motorhome and have not yet added solar (coming 2026). I will install another of these disconnects when I bring in solar.
Trustpilot
2 months ago
2 weeks ago