Blue Sea Systems 6004 m-Series Battery Disconnect Switch with Locking Key, Red, 300 Amp Continuous

The Blue Sea Systems 6004 is an on/off battery disconnect switch built to manage a single battery connected to a single load group on a boat's DC electrical system. It uses a removable locking key so the operator can pull the knob and lock out the circuit, helping prevent accidental current flow or unauthorized use while the boat is unattended or during electrical service. The switch is ignition protected, making it suitable for mounting inside the engine room of gasoline powered boats where protected components are required. Its compact housing supports three mounting options -- surface, rear, or front mount -- so it can be fitted into tight panel layouts or limited engine room space, and breakout tabs on the housing allow wiring to be routed from any direction. Connections are made through one-piece, tin-plated copper terminal studs measuring 7/8 inch, sized to accept multiple cables for a secure, corrosion-resistant connection. Electrically, the 6004 is rated for 300 amps continuous duty, 500 amps intermittent (5 minute), and 900 amps cranking (30 second), at up to 48 volts DC. The 6004 does not ship with the 6-circuit label set included on some other switches in the same family; buyers who want circuit labeling can add the Icon Circuit Identification Label Kit (7902), sold separately. It is finished in red and backed by a lifetime warranty.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 6004
• Product Type: On/Off Battery Disconnect Switch
• Color: Red
• Operation Mode: OFF-NONE-ON with removable locking key
• Continuous Rating: 300 amps
• Intermittent Rating (5 minute): 500 amps
• Cranking Rating (30 second): 900 amps
• Maximum Operating Voltage: 48 volts DC
• Mounting Type: Surface, rear, or front mount (panel mount)
• Terminal Studs: One-piece, tin-plated copper, 7/8 inch, accept multiple cables
• Ignition Protection: Suitable for engine rooms of gasoline powered boats
• Material: Plastic housing
• Item Dimensions: 7 x 4 x 4 inches
• Weight: 0.65 pounds
• UPC: 632085060046
• Warranty: Lifetime

Frequently Asked Questions

What does the Blue Sea Systems 6004 battery switch do? The 6004 is an on/off disconnect switch that manages a single battery connected to a single load group, letting the operator fully cut DC power with a removable locking key to prevent accidental or unauthorized current flow.

What is the current rating of the 6004 switch? It is rated for 300 amps continuous, 500 amps intermittent over 5 minutes, and 900 amps cranking over 30 seconds, at up to 48 volts DC.

Can the 6004 be mounted in an engine room with a gasoline engine? Yes, the 6004 is ignition protected, so it can be installed in the engine room of a gasoline powered boat where protected electrical components are required.

What mounting options does the 6004 support? Surface, rear, or front mounting are all supported, giving flexibility to fit the switch into different panel layouts or tight engine room spaces.

Does the 6004 include a locking key? Yes, the Blue Sea Systems 6004 has a removable knob with a locking key so the switch can be locked in the off position during service or when the boat is unattended.

What size are the terminal studs on the 6004? The 6004 uses one-piece, tin-plated copper terminal studs measuring 7/8 inch, sized to accept multiple cables for a secure connection.

Does the 6004 come with circuit labels? No, the 6-circuit label set that ships with some other switches in this family is not included with the 6004; the Icon Circuit Identification Label Kit (7902) is available separately for labeling.

What color is the 6004 switch? The Blue Sea Systems 6004 is finished in red.

How much does the 6004 battery switch weigh? It weighs 0.65 pounds.

What are the dimensions of the 6004? The 6004 measures 7 x 4 x 4 inches.

What material is the 6004 switch housing made of? The housing is plastic, paired with tin-plated copper terminal studs for the electrical connections.

Is the 6004 covered by a warranty? Yes, the Blue Sea Systems 6004 is backed by a lifetime warranty.