what is the little gray button thing in the package? It will slide in one of the 4 slots on the edges but what is it used for?

It is to close the slot if you don't need it open for wires to pass through.

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Battery Disconnect Switch 12V-48V DC 275A Battery Power Master Isolator Shut Off Switch for Marine Boat Car Truck Camper RV Trailer

Product ID: 350621017

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Details

Operation Mode
ON-OFF
Current Rating
275 Amps
Operating Voltage
48 Volts
Contact Type
Normally Open
Connector Type
Screw
Brand
GOGONFLY

⚡275A continuous DC rating

💧Waterproof ABS housing

🔄Easy rotate on/off operation

Description

🔋 Power down with confidence—stay charged, stay ready!

EFFORTLESS CONTROL - Smooth rotate switch design for quick and reliable on/off operation under load.
HEAVY DUTY DURABILITY - ABS plastic and copper-tin plating ensure corrosion resistance and long-lasting performance.
UNIVERSAL COMPATIBILITY - Works seamlessly with 12V to 48V systems across marine, automotive, RV, and more.
COMPLETE INSTALLATION KIT - Includes mounting bolts, copper terminals, heat shrink tubing, and hex wrench for hassle-free setup.
ULTIMATE BATTERY PROTECTION - Safely isolates your battery to prevent power drain and electrical hazards.

This Battery Disconnect Switch supports 12V to 48V DC systems with a robust 275A continuous current rating. Its waterproof ABS housing and copper-tin plated studs protect against corrosion and environmental damage. Designed for marine, automotive, RV, and trailer applications, it offers a simple rotate-to-on/off control and comes with a full installation kit for quick setup.

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₨13137

Duties & taxes incl.

Sri Lankastore

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TrustScore 4.5 | 7,300+ reviews