The Blue Sea Systems 2139 is a 20A, medium-duty circuit breaker designed for reliable protection in marine and vehicle electrical systems. This push-to-reset breaker is built for versatility and safety in demanding environments.
- Amperage: 20A
- Weatherproof construction for marine use
- Suitable for main, branch, or 24-hour circuit protection
- Compact design allows for high-density configurations
- Trip-free design prevents holding the breaker ON during a fault
- Ignition protected for safe installation aboard gasoline-powered vessels
- Includes captive star lock washers for anti-rotation installation
- Regulatory note: This product contains chemicals including di(2-ethylhexyl)phthalate (DEHP), known to the State of California to cause cancer, birth defects, or other reproductive harm.
Product facts
- CT SKU
- CT-101428
- Model / MPN
- 2139
- UPC / GTIN
- 632085021399
- Package dimensions
- 2" X 3" X 7"
- Package weight
- 0.2 lb
- Specifications
- Amperage = 20a
Fit-sensitive item: confirm measurements, model numbers, and manufacturer details before ordering. Tug & Tow does not guarantee universal compatibility from a product page alone.
Shipping & returns
Shipping & returns
Shipping methods, delivery estimates, and final costs appear at checkout before payment. Some bulky, supplier-shipped, or special-handling items may ship separately. See Shipping & Returns for return windows and eligibility.
Fit & compatibility
Fit & compatibility
Review the product title, description, images, dimensions, part numbers, and manufacturer details before purchase. For fit-sensitive items, confirm compatibility with your boat, RV, trailer, vehicle, or equipment.
Need help choosing?
Need help choosing?
Send us the product link or SKU, plus details about your boat, RV, trailer, vehicle, or project. We will help you narrow down the right option when product fit is not obvious.
