Dometic / Atwood 33780 Furnace Circuit Breaker – 7 Amp Pop-Up Reset

Special Order Item (7–14 Business Days for Shipping)

Protect your RV furnace electrical system with the Dometic / Atwood 33780 Furnace Circuit Breaker. This 7-amp pop-up style breaker is designed to protect the furnace blower motor and electrical components from excessive current draw and electrical overload.

When an abnormal power spike or electrical fault occurs, the breaker trips and interrupts the circuit, preventing damage to critical furnace components. Once the issue is resolved, the breaker can be reset using the pop-up button, restoring power to the furnace.

This breaker is commonly used in Atwood Hydro Flame furnaces and helps ensure safe and reliable furnace operation in your RV.

Please Note: This item is a Special Order part and typically ships within 7–14 business days.

Key Features

• Genuine Dometic / Atwood furnace replacement part
• 7 Amp circuit breaker
• Pop-up reset style for easy troubleshooting
• Protects furnace blower motor and electrical components
• Designed for Atwood Hydro Flame furnace systems
• Compact and durable construction for RV furnace applications

Compatible Furnace Models

The Dometic / Atwood 33780 circuit breaker is compatible with the following furnace models:

• 8525-I
• 8525-II
• 8516-III
• 8520-III

This breaker is also used across multiple Atwood Hydro Flame furnace series in similar configurations.

Always confirm your furnace model before ordering.

What This Part Does

The 33780 furnace circuit breaker protects the furnace electrical system by monitoring current flow to the blower motor. If the system draws too much current for an extended period, the breaker trips to stop the electrical flow, preventing damage to internal furnace components.

After the issue is corrected, simply press the reset button to restore power and resume furnace operation.

Signs You May Need a New Furnace Circuit Breaker

You may need to replace the Atwood 33780 breaker if you notice:

• Furnace blower will not start
• Furnace loses power intermittently
• Breaker repeatedly trips
• Furnace stops during startup
• Visible damage or wear on the breaker

Replacing a faulty breaker can help restore reliable furnace operation and protect other electrical components.

Installation Notes

The 33780 circuit breaker is typically mounted externally on the furnace and wired into the furnace electrical circuit. Disconnect power before servicing any furnace components.

If you are unsure about installation, consult a qualified RV technician.

Frequently Asked Questions

What amperage is the Atwood 33780 breaker?
This breaker is rated for 7 amps.

Is this a resettable breaker?
Yes. It uses a manual pop-up reset button.

What does this breaker protect?
It protects the furnace blower motor and electrical circuit from excessive current.

Can a tripped breaker indicate another problem?
Yes. A breaker usually trips because of excessive motor draw, wiring issues, or a failing blower motor.

Why Buy From RVFurnaceGuys.com?

At RVFurnaceGuys.com, we specialize exclusively in RV furnace parts and repair components. Our goal is to help RV owners and technicians quickly diagnose furnace issues and get heating systems running again with reliable replacement parts.