March 4, 2025

[Video] Causes of a Hot Circuit Breaker

Your home’s electrical system is designed for safe operation, but if a circuit breaker feels hot to the touch, it could signal a serious problem. While some warmth is normal, excessive heat may indicate an overloaded circuit, loose wiring, or even a faulty breaker. Left unaddressed, these issues can increase the risk of electrical fires and power failures.

In the video below, we cover the common causes of a hot circuit breaker and how to inspect your electrical panel for issues. Read the rest of this post for more details about what to do when a circuit breaker is hot and when to call an electrician.

Signs a Circuit Breaker is Getting Too Hot

When a Circuit Breaker is Operating Normally

• Circuit breakers naturally generate some warmth because they regulate the flow of electricity.
• A slight temperature increase is typical, especially for circuits with high-power appliances.
• A normal panel is slightly warm but not hot.

When a Hot Circuit Breaker Signals a Problem

If your circuit breaker feels excessively hot or you notice any of the following warning signs, you should take immediate action:

• The breaker is too hot to touch or radiates noticeable heat.
• There is a burning smell coming from the electrical panel.
• You see discoloration, scorch marks, or melted plastic around the breaker.
• The breaker trips frequently or refuses to reset.
• You hear buzzing or crackling sounds from the panel.

A hot breaker is a safety risk and should not be ignored. Call a licensed electrician to address the issue as soon as possible. 

Reasons a Circuit Breaker Gets Hot

1. Overloaded Circuit

An overloaded circuit occurs when too many devices draw power from the same breaker.

Common causes:

• Running multiple high-wattage appliances on a single circuit (space heaters, microwaves, air conditioners, etc.).
• Using too many power strips or extension cords.
• Old wiring that can’t handle modern electrical loads.

Solution: Redistribute electrical usage across multiple circuits or install dedicated circuits for high-power appliances.

2. Loose Electrical Connections

Loose connections inside the breaker panel cause electrical resistance, generating heat. Over time, wires can loosen due to natural vibrations and temperature fluctuations.

Warning signs:

• A single breaker is consistently hot, even when little electricity is used.
• You notice flickering lights or inconsistent power in parts of your home.

Solution: A licensed electrician should inspect and tighten connections to restore safe operation.

3. Faulty or Aging Circuit Breaker

Breakers wear out over time, and a malfunctioning breaker may not trip properly.

When to replace a breaker:

• Your breaker is 10-15 years old or older.
• It feels excessively hot even when lightly loaded.
• It trips frequently or fails to trip when an overload occurs.

Solution: Replace the breaker with a new one that matches your electrical panel’s specifications.

4. Short Circuit or Ground Fault

A short circuit or ground fault can cause overheating by sending excessive electrical current through the breaker.

Warning signs:

• The breaker trips immediately after being reset.
• You see scorch marks or melted wiring in the panel.
• There’s a burning smell or sparks when resetting the breaker.

Solution: These are serious electrical hazards. Turn off power to the affected circuit and contact an electrician immediately.

Who Do I Call When My Circuit Breakers Overheat?

When you feel excessive heat from a circuit breaker, it’s time to call in a professional. At Applewood Plumbing Heating & Electric, our team of licensed electricians specializes in troubleshooting, repairing, and upgrading electrical systems for Denver-area homeowners. Whether you need breaker replacements, a more powerful panel, or safety inspections, we’re here to help.

Call us today to schedule an inspection or schedule your service online using the button at the top of this page. We look forward to protecting your home from potential electrical hazards.