What Causes a Breaker Box to Catch Fire? | Hunker Degraded components are faulty and will eventually cause sparking and possibly fire, according to K.I. Security Enterprises. Although an electrical breaker box is designed for safety, it is not entirely fireproof. Sparks inside the box can set it on fire, and the fire can spread throughout your home quickly. Breakers are simple to inspect. Fire caused by a fuse box | Electrical News | Meteor Fire caused by a fuse box. Three sleeping Battersea residents were "lucky" to escape after being dramatically rescued from a smoke-filled property by firefighters following an electrical fire. The fire was caused by a fuse box over heating causing it to melt, filling the property with thick black smoke.