Is there a bottom or back?

Yes the switch is fully enclosed except for the side you enter with the wire

These are listed as being rated for 275A continuous, but the manual this switch comes with says its only 200A continuous. Which is the correct rating?

Thank you for your purchase. The item you recieved is On-Off battery switch, and the pamphlet you recieved is 1-2-Both-Off battery switch, so sorry for the issue casued to you, the pamphlet may be mixed by our worker. Fot the item you purchased X001H8MQTX (On-Off battery switch), the continuous rating is : 275Amps DC. Also below are some tips for you to install the switch: The 2 terminals are same, no negative and positive. Just like a switch, connected to the switch on both sides so when you flip the switch it cuts the circuit. More, recommend to install this cut off switches on the negative, not the positive (lower current in negative, will be more safety). The switch can be install in the negative wire, another short battery cable or cut existing cable and attach terminals on each end. Hope the info can help you.

How far from battery can it be installed?

Mine is 2 feet from the battery, I don't think it matters. Your cable size will have to increase the further away from the battery that you install it.

If the switch is on off (red) is the battery not drawing or the disconnect is not engaged and battery still drawing? Over thinking I'm sure.

battery 1 to switch,battery 2 to load side if you are using battery 2 too power stuff. if switch is off then battery 2 will power your things and not draw from main battery 1. To charge battery 2 turn switch to on then turn off when its fully charged if that makes sense

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Ampper Battery Disconnect Switch 12V - 48V, Marine Battery Switch Disconnect Power Cut Shut Off with Lugs for Car, RV and Boat (On/Off Kit)

Ampper Battery Disconnect Switch 12V - 48V, Marine Battery Switch Disconnect Power Cut Shut Off with Lugs for Car, RV and Boat (On/Off Kit)

Product ID: 473753224

Details

Brand
Ampper
Connector Type
Screws
Contact Type
Normally Open
Current Rating
275 Amps
Item dimensions L x W x H
2.76 x 3.74 x
Material
Acrylonitrile

⚡1250A momentary surge

🔋275A continuous power

🛠️4 copper lugs + wrench kit

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802574₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Details

Brand
Ampper
Connector Type
Screws
Contact Type
Normally Open

Description

🔌 Master your power. Disconnect with confidence.

SAFETY FIRST DESIGN - ABS housing with insulated rear cover prevents shorts and protects your investment.
CUT POWER CUT WORRIES - Easily isolate your battery to eliminate power drain and extend battery life during storage.
POWER THROUGH ANYTHING - Handles up to 275A continuous and 1250A surge—built for serious electrical demands.
UNIVERSAL COMPATIBILITY - Works seamlessly with 12V to 48V systems—perfect for cars, RVs, boats, and more.
ALL IN ONE INSTALLATION KIT - Includes copper lugs, bolts, heat shrink tubing, and wrench—everything you need to install hassle-free.

The Ampper Battery Disconnect Switch is a heavy-duty, ABS-encased rotary switch designed for 12V to 48V DC systems. Rated for 275A continuous and 1250A momentary current, it safely isolates batteries in cars, RVs, and boats to prevent power drain. The kit includes copper lugs, mounting bolts, heat shrink tubing, and a wrench for easy installation, making it a reliable, universal solution to protect and extend battery life.

Specifications

ASIN	B0B3JMJK43
Actuator Type	Rotary
Best Sellers Rank	#6,877 in Automotive ( See Top 100 in Automotive ) #18 in Automotive Replacement Battery Switches
Brand	Ampper
Brand Name	Ampper
Circuit Type	2-way
Color	On-Off
Compatible with Vehicle Type	Universal Fit (voltage at: DC 12 - 48V systems): Marine Boat, Ship, Yacht, RV, Truck
Connectivity Protocol	X-10
Connector Type	Screws
Contact Material	Copper
Contact Type	Normally Open
Control Method	Touch
Current Rating	275 Amps
Customer Reviews	4.6 out of 5 stars 363 Reviews
International Protection Rating	IP54
Item Dimensions	2.76 x 3.74 x 2.95 inches
Item Weight	11 Ounces
Manufacturer	Ampper
Material Type	Acrylonitrile Butadiene Styrene
Model	Am-CBS0101
Mounting Type	Surface Mount
Number of Positions	2
Operating Voltage	48 Volts
Operation Mode	ON-OFF
Part Number	Am-CBS0101
Switch Type	Push Button
Terminal	Screw
Unit Count	1 Count
Wattage	3300 watts

Reviews

N**N

10.10.2025

L**Z

5.03.2026

S**R

31.03.2026

T**Y

5.12.2024

A**R

21.12.2025

L**4

2.07.2025

D**E

13.03.2025

J**R

11.08.2025

M**N

16.11.2023

M**N

8.09.2024

匿**名

31.08.2025

L**Y

9.09.2024

A**R

12.12.2022

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