Before circuit breakers became common, fusible switches were widely used. These switches can still often be found in older homes. Fusible switches contain a fuse that protects your home and appliances from electrical overloads. If your home still uses a fusible switch and you're considering replacing it with circuit breakers, contact Keep Smiling Plumbing, Electric, Heating & Cooling. Our electrical experts can assess your home and power needs, and provide a price quote.