Single Circuit ON-OFF with Locking Key – Red
300 Amps continuous rating for outboards and small gasoline or diesel engines
- Tin-plated copper studs for maximum conductivity and corrosion resistance
- Studs accept 3/8″ (M10) ring terminals
- 7/8″ (22 mm) stud length accepts multiple cable terminals
- Blue Sea Systems one-piece terminal stud design never loosens over time
- One-piece stainless flange nuts ensure safe and secure connections
- Isolating cover protects rear contacts
- Breakout tabs allow wire access in any direction
Specifications:
- Switch Type: Single Circuit ON-OFF
- Color: Red
- Maximum Voltage: 48V DC
- Continuous Rating: 300A
- Intermittent Rating: 500A
- Cranking Rating 30 sec: 900A

Owner’s Manual (pdf)
![blue-sea-6004-single-circuit-on-off-w-locking-key-red-6004 Blue Sea 6004 Single Circuit ON-OFF w/Locking Key – Red [6004]](https://www.crankbaitt.com/wp-content/uploads/2025/8/1756613396/blue-sea-6004-single-circuit-on-off-w-locking-key-red-6004.webp)
![blue-sea-6004-single-circuit-on-off-w-locking-key-red-6004_1 Blue Sea 6004 Single Circuit ON-OFF w/Locking Key – Red [6004]](https://www.crankbaitt.com/wp-content/uploads/2025/8/1756613396/blue-sea-6004-single-circuit-on-off-w-locking-key-red-6004-1.webp)
![Blue Sea 6010 m-Series (Mini) Battery Switch Dual Circuit [6010]](https://www.crankbaitt.com/wp-content/uploads/2025/8/1756613368/blue-sea-6010-m-series-mini-battery-switch-dual-circuit-6010.webp)
![Blue Sea 7702 ML-Series Remote Battery Switch w/Manual Control 24V DC [7702]](https://www.crankbaitt.com/wp-content/uploads/2025/8/1756613374/blue-sea-7702-ml-series-remote-battery-switch-w-manual-control-24v-dc-7702.webp)
![Blue Sea 6006 m-Series (Mini) Battery Switch Single Circuit ON/OFF Red [6006]](https://www.crankbaitt.com/wp-content/uploads/2025/8/1756613374/blue-sea-6006-m-series-mini-battery-switch-single-circuit-on-off-red-6006.webp)
Reviews
There are no reviews yet.