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Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps

Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps

Item # SE73FR
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Battery disconnect switch isolates the battery in your boat or RV to prevent power drain. 2-Position toggle is easy to use. Can be recessed or surface mounted. Call 800-298-1624 to order Seaflo accessories and parts part number SE73FR or order online at etrailer.com. Free expert support on all Seaflo products. Guaranteed Lowest Price and Fastest Shipping for Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps. Accessories and Parts reviews from real customers.
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  • Reviews (6)
  • Q & A (3)
  • Videos (1)
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  • Why etrailer?

Seaflo Accessories and Parts - SE73FR

  • Battery
  • Disconnect Switch
  • Seaflo

Battery disconnect switch isolates the battery in your boat or RV to prevent power drain. 2-Position toggle is easy to use. Can be recessed or surface mounted.


  • Battery disconnect switch isolates the battery in your boat or RV to prevent power drain
  • 2-Position toggle is easy to use
  • Removable key lets you control when the battery is connected and disconnected
  • Can be recessed or surface mounted


  • Voltage: 50 volts DC
  • Maximum power draw: 1,250 amps
    • Rated at 275 amps continuous, 450 amps intermittent, and 1,250 amps cranking
  • 4-Year limited warranty

SFBIS-02 Sea Flow Battery Disconnect Switch for Boats and RVs - 1,250 Amps

Video of Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Review of Seaflo Boat Accessories - Battery Switches - SE73FR

Ellen: Hey everyone. I'm Ellen here at etrailer.com, and we're going to be taking a quick look at the Seaflo battery disconnect. This is a nice addition to your RV or your boat or any other kind of vehicle that you'd want to cut off the power to. This helps to reduce or eliminate any kind of power drain from leaving your vehicle in storage. Also prevents anybody from getting in there and be able to start anything up. So by taking this, we'll be able to, or turning this off, you're going to completely cut off any kind of power that comes from the battery, and you can also take the key with you.

So again, it's a safety feature in that respect. This comes with a cap to go over it, to make sure that there's no water or anything that's going to get in there, especially nice for your marine applications. So pretty simple kind of design here.Let's talk about the specs and some of the features. So again, we'll have our little connector there. Comes with the key.

Just pops in place and then turn the key to turn everything on, turn it the other way to turn everything off, and then turn it a little bit further and it'll allow you to take that key out. So when you first put it in, there's going to be kind of one click and that's just locking it into place, but it's still off. So you then have to turn it again and it kind of goes down and in, and that's when you know that it's on and it won't go any further to the right.It does kind of have a little key there saying on and off, but it's not super helpful since you're going to be putting that cap right over it, so you can't really see it once you're trying to use it. But cap fits nice and snugly, has a tab to help take it back off. It goes pretty deep into that little port.

This is a surface mount design. So it's just going to sit here. So this portion would be covered by your dash or wherever you're mounting it, and this will stick out a little bit. You could maybe create some kind of recessed mount to put this into, but for the most part it's pretty much just going to be a surface mount design.As far as the voltage, it's rated at 50 volts DC with a max power draw of 1250 amps. So when you first click things on, or the cranking amps, it's rated at that 1200 amps.

The continuous amp rating is 275 amps with a 450 amp intermittent rating. So should be plenty powerful enough for any kind of RV or boat that you might have. Unless you've got some really big yacht or something like that, this should really have plenty of power so you don't have to worry about overloading it.You do want to make sure to get heavy gauge wire that's going to match with your battery. Something maybe like a one or zero gauge for the connection to this. It doesn't come with that, but you will want to pick up some heavy gauge wiring. It looks like the studs here have a diameter of about a quarter of an inch. So you'll want to get terminals that will fit over those. Maybe even three eights of an inch, as far as that diameter. It doesn't come with mounting hardware either so then you will have to pick that up on your own. Distance between those mounting holes center to center, it looks to be about an inch and a half. Total height is about three inches. As far as the surface, it's about two inches tall. And then what's going to stick down into your RV or wherever you're mounting it up, if we go to the end of the stud it's about an inch and a quarter. The length that we'll have to have for our cutout is about two and a quarter inch by about seven eighths of an inch. Maybe actually an inch going to that kind of circular part there.It's covered by a four year limited warranty, and that's pretty much all there is to it for our look at the Seaflo battery disconnect with key. I will give you one last measurement with the key inserted as far as that height coming up off of there. Looks to be about two and a half inches tall from the surface, so you probably want to give yourself about three and a half inches just with how you have to get that key in there if you're going to be tucking it into kind of a smaller spot. Well, I hope this video has been helpful in deciding if this is going to be the right solution for you. We do have some other battery disconnects here at etrailer.com. So check them out if you're interested. And we also have a lot of other accessories for your marine applications and also for your RVs. Thanks for watching.

Customer Reviews

Seaflo Battery Disconnect Switch with Key for Boats and RVs - 1,250 Amps - SE73FR

Average Customer Rating:  4.5 out of 5 stars   (6 Customer Reviews)

Battery disconnect switch isolates the battery in your boat or RV to prevent power drain. 2-Position toggle is easy to use. Can be recessed or surface mounted.

- SE73FR

Product was what I ordered and received order on time.

- SE73FR

Great heavy duty quality switch, delivered quickly. I like product videos that they have on the web site and the fact that they always include the dimensions and pictures from multiple angles.

- SE73FR

have not installed yet but looks easy and I like the fact that it has a removable key

- SE73FR

Quick delivery and as advertised.

- SE73FR

- SE73FR


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Info for this part was:

Employee Lindsey S
Edited by:
Lindsey S
Employee Jameson C
Expert Research:
Jameson C
Employee Kathleen M
Installed by:
Kathleen M
Employee Alexander C
Written by:
Alexander C
Employee Noah M
Updated by:
Noah M

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