275A Battery Disconnect Switch for 6–48V Vehicles, RVs and Boats
A manual battery disconnect switch for compatible 6–48 V DC vehicle and marine electrical systems. It provides a 275 A continuous rating, 455 A intermittent rating and 1250 A momentary starting rating at 12 V DC, with lower continuous-current ratings specified for 24 V and 48 V operation.
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1. Manual Battery Isolation
This battery disconnect switch provides manual ON/OFF control for compatible DC electrical systems. It can be used to isolate the battery during vehicle storage, electrical maintenance or emergency shutdown without repeatedly removing the battery cables.
The switch supports 6–48 V DC systems, with current capacity decreasing as the operating voltage increases.
2. Voltage-Specific Current Ratings
• 12 V Continuous Rating: Supports continuous current up to 275 A.
• 12 V Intermittent Rating: Supports intermittent current up to 455 A.
• 12 V Momentary Rating: Supports starting or momentary current up to 1250 A.
• 24 V Continuous Rating: Supports continuous current up to 137.5 A for 1 hour.
• 48 V Continuous Rating: Supports continuous current up to 68.75 A for 1 hour.
• 6–48 V DC System Range: Supports compatible vehicle and marine electrical systems when operated within the applicable voltage-specific current rating.
3. ON/OFF Rotary Control
• Two Operating Positions: Provides clear ON and OFF control of the battery circuit.
• M10 Copper Terminal Studs: Two 3/8-inch terminal studs support compatible high-current cable connections.
• Insulated Rear Cover: Helps isolate the rear terminals after installation.
• Four-Point Mounting: Four mounting holes support secure panel installation.
• Standalone or Modular Installation: The switch can be installed independently or combined with compatible switch assemblies.
4. Vehicle and Marine Applications
The battery disconnect switch is suitable for compatible cars, trucks, buses, RVs, off-road vehicles, yachts, boats and other low-voltage DC equipment.
It is intended for automotive accessory distributors, marine electrical suppliers, RV equipment suppliers, vehicle conversion companies, workshops and manufacturers of battery-powered equipment.
Compatibility must be determined by system voltage, current requirements, terminal dimensions, cable size and installation space rather than vehicle make or model alone.
Key Features
• Manual ON/OFF battery isolation
• Suitable for compatible 6–48 V DC systems
• 275 A continuous rating at 12 V DC
• 455 A intermittent rating at 12 V DC
• 1250 A momentary starting rating at 12 V DC
• Voltage-specific current derating for 24 V and 48 V systems
• Two M10 copper terminal studs
• Insulated rear terminal cover
• Four mounting holes
• Suitable for vehicle, RV and marine electrical systems
| Parameter | Specification |
|---|---|
| Product Type | Battery disconnect switch |
| Switch Function | ON/OFF battery isolation |
| Switch Positions | 2 |
| Supported System Voltage | 6–48 V DC |
| 12 V Continuous Current | 275 A |
| 12 V Intermittent Current | 455 A |
| 12 V Momentary Starting Current | 1250 A |
| 24 V Continuous Current | 137.5 A for 1 hour |
| 48 V Continuous Current | 68.75 A for 1 hour |
| Terminal Quantity | 2 |
| Terminal Stud Size | 3/8 inch |
| Metric Terminal Stud Size | 10 mm |
| Terminal Material | Copper |
| Housing Material | ABS plastic |
| Rear Terminal Cover | Included |
| Mounting Holes | 4 |
| Mounting Type | Panel mounting |
| Product Condition | New |
| Warranty | 12 months |
| Single Package Size | 38 × 32 × 12 cm |
| Single Gross Weight | 0.850 kg |
Compatibility and Selection Guidance
This battery disconnect switch is designed for compatible 6–48 V DC electrical systems. It is not limited to a particular vehicle make, model, year or engine.
Before ordering or installation, confirm:
• The applicable continuous current rating for the operating voltage.
• The required intermittent and starting current capacity.
• Battery cables and cable terminals are suitable for the expected current.
• Cable terminals are compatible with the two 3/8-inch (10 mm) terminal studs.
• The available installation area supports panel mounting.
• Appropriate fuses or circuit protection are installed where required.
• Installation is completed by a person familiar with high-current DC electrical systems.
The 275 A continuous rating applies to 12 V DC operation. Do not apply the 275 A rating to 24 V or 48 V systems.
Applications
• Cars and light vehicles
• Trucks and commercial vehicles
• Buses
• RVs and camper vans
• Off-road vehicles
• Yachts and boats
• Marine electrical systems
• Battery-powered equipment
• Vehicle conversion projects
• Low-voltage DC power systems
Package
Included Items
• Battery disconnect switch: 1 pc
• Mounting bolts: 4 pcs
