40A 12V bolt-on DC circuit breaker with automatic thermal reset Key benefits - Protects electrical circuits from overloads and short circuits in 12V DC systems - Automatic reset after a fault helps maintain power, but the breaker will continue to trip off until the fault is corrected - Reliable bolt-on installation for secure mounting in demanding environments - Thermal automatic reset reduces nuisance trips and minimizes downtime What it is - A DC circuit breaker designed for heavy‑duty and truck applications - Suitable for boat, ship, yacht, ATV, RV, special vehicles and other electrical control systems - Built for 12V systems and 40A circuit protection Specifications and features - 40A rating, 12V DC - Bolt-on style mounting - Automatic thermal reset functionality - Repeatedly protects circuits from overloads while allowing automatic re‑establishment of power after fault resolution Practical use scenarios - On a boat or yacht: protects critical DC circuits such as navigation lights, bilge pump, and ancillary electronics - In off-road or work trucks: safeguards winch and accessory power circuits against overloads - In RVs or ATVs: protects 12V electrical systems for lighting, appliances, and charging setups Consistency and compatibility - Designed for DC circuits across heavy‑duty vehicles and marine applications - Compatible with 12V systems and bolt-on installation for secure electrical protection