A circuit breaker gets hot and eventually trips due to an overcurrent condition or high electrical resistance. When too many high-wattage appliances draw excessive current through a branch circuit simultaneously, the internal bimetallic strip heats up, bends past its mechanical threshold, and trips the breaker. Alternatively, loose terminal screw connections or pitted internal contact points create high electrical resistance, generating intense resistive heat that warms the breaker housing and can trigger a thermal trip. You can troubleshoot electrical faults safely by shutting off power before inspection. You can verify that your corrective action is successful when redistributing heavy electrical loads, tightening loose terminal lugs, or replacing a faulty breaker ensures safe operating temperatures and stable power delivery.
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