Circuit Breakers, Breaker Boxes & Fuses - Lowe's Whether you’re in need of replacement parts for a 100-amp breaker box or you need a new 200-amp breaker box, you’ll find what you need in stores and online. Pick up a grounding rod to effectively protect any property from lightning or ask about our line of main breaker panels. Looking for different types of breakers?Main Breaker · Standard Circuit Breakers · Breaker Switches · Afci/Gfci Circuit Breakers Identifying and Understanding Your Main Circuit Breaker Usually, the main breaker trips due to a temporary issue and resetting it will solve the problem. but if the main breaker trips again, or trips repeatedly, you are well advised to call in a professional. The problem may involve a short circuit in the main panel, a failed main circuit breaker, or another serious problem.