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CIRCUIT BREAKERS
Explore our comprehensive selection of low‑voltage thermal and automotive circuit breakers designed for reliable overcurrent protection in trucks, buses, RVs, marine, liftgates, and auxiliary circuits. These devices automatically open on overload or short circuit to protect wiring and equipment, and many styles reset automatically or with a simple manual action once the fault is cleared.
From compact plug‑in replacements for ATM/ATC/MAX fuses to high‑amp surface‑mount breakers and sealed units for harsh environments, this range covers OEM, fleet, and aftermarket needs in 12 V systems and select higher‑voltage panel applications.
Thermal Circuit Breakers
-Single‑pole thermal circuit breakers rated 5–50 A at 12 VDC for automotive and auxiliary circuits
-Available in auto‑reset and manual‑reset versions with plastic or metal housings and multiple bracket styles
-Suitable for battery chargers, trucks, buses, RVs, trolling motors and similar low‑voltage loads
Plug‑In Footprint Circuit breakers
-Plug‑in breakers that replace common ATM, ATC, MAXI, MINI and glass fuses in 12 V panels
-Include Type I, II and III reset behaviors for cycling, non‑cycling and manual‑reset protection
-OEM‑style parts compatible with Ford, Freightliner, Paccar, Mack, Navistar and other vehicle platforms
Sealed/ SDLM Vehicle Breakers
-Sealed thermal breakers designed for harsh, ignition‑protected vehicle environments
-Ideal for battery protection, truck liftgates, and overcurrent protection in heavy battery chargers
-Offered in automatic‑reset (SDLA) and manual‑reset (SDLM) versions for flexible maintenance strategies
High-Amp & Main Breakers
-40–150 A high‑amp thermal breakers for auxiliary and accessory feeds in trucks, buses, RVs and marine
-Surface‑mount auto‑reset and switchable manual‑reset options for critical high‑current circuits
-Designed to meet SAE specifications
Bussmann High‑Amp & Panel‑Mount
-Waterproof high‑amp manual and switchable reset breakers for auxiliary and accessory circuits
-SEMS‑nut and panel‑mount designs suitable for trucks, buses, RVs, marine and control panels
-Ratings up to 250 VAC and 50 VDC to cover both mobile 12 VDC and select panel applications