The Blue Sea Systems 6006 M-Series Battery Switch is a compact, heavy-duty ON/OFF battery disconnect switch designed to safely isolate a single battery from a single electrical load group. Engineered for marine, RV, automotive, off-grid, and industrial applications, this switch provides reliable battery management while protecting electrical systems during maintenance, storage, or emergencies.

Rated for 300 Amps continuous and 775 Amps cranking, the Blue Sea 6006 is ideal for high-current DC systems. It supports 12V, 24V, 36V, and 48V DC electrical installations and accepts up to 4/0 AWG battery cables, making it suitable for a wide range of marine and heavy-duty applications.

The removable ignition-protected knob remains securely retained during operation, while the tin-plated copper studs provide excellent conductivity and corrosion resistance for long-term reliability in harsh marine environments.

Multiple Blue Sea 6006 or 6005 switches can also be installed together to manage independent battery banks or provide emergency cross-connection between isolated circuits.

Features

• Genuine Blue Sea Systems® product

• M-Series (Mini) battery switch

• Single circuit ON/OFF operation

• 300A continuous current rating

• 775A cranking rating

• Maximum voltage: 48V DC

• Accepts battery cables up to 4/0 AWG

• Ignition protected

• Tin-plated copper terminals for superior conductivity

• Corrosion-resistant marine-grade construction

• Compact design for easy installation

• Removable knob remains positively retained

Specifications

• Brand: Blue Sea Systems

• Manufacturer Part Number: 6006

• Series: M-Series

• Product Type: Battery Disconnect Switch

• Switch Positions: ON / OFF

• Circuits: Single

• Continuous Rating: 300 Amps

• Cranking Rating: 775 Amps

• Maximum Voltage: 48V DC

• Cable Size: Up to 4/0 AWG

• Terminal Studs: 3/8"-16 (M10) Tin-Plated Copper

• Stud Length: 7/8"

• Dimensions: 2.825" × 2.825"

• Application: Marine, RV, automotive, commercial, industrial, off-grid, and battery management systems

Weight

• Approximate Weight: 11 oz (0.69 lb / approximately 312 g)