![Blue Sea 6004200 Single Circuit ON-OFF w /Locking Key - Black [6004200]](https://www.bestmarinebattery.com/wp-content/uploads/2026/08/blue-sea-6004200-single-circuit-on-off-w-locking-key-black-6004200.webp)
Description
Single Circuit ON-OFF with Locking Key – Black
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: Black
- Maximum Voltage: 48V DC
- Continuous Rating: 300A
- Intermittent Rating: 500A
- Cranking Rating 30 sec: 900A
WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.
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