General Electric | THHQB1115ST1 | Circuit Breaker | 15A | 1-Pole | 120V

The General Electric THHQB1115ST1 is a 15A, 1-Pole, 120V circuit breaker engineered for reliable protection in maintenance, retrofit, and replacement projects where exact specifications matter. When your panel calls for this precise part, this GE breaker delivers consistent performance and easy compatibility.

Key specifications

• Amperage: 15A
• Poles: 1-Pole
• Voltage: 120V
• Part number: THHQB1115ST1
• Brand: General Electric (GE)

Why this GE circuit breaker stands out

Engineered by General Electric, this THHQB1115ST1 breaker is built for straightforward replacement in panels that require a 15-amp, single-pole 120-volt device. It’s a practical choice for proactive maintenance and thoughtful retrofits, helping you maintain consistent protection across circuits without reconfiguring your entire panel. Using the correct part number is the most reliable way to confirm compatibility with your existing electrical system.

Compatibility and fit

Before you order, verify fit and ratings to ensure a seamless swap. The THHQB1115ST1 is the best reference for compatibility—use the part number to match your panel’s requirements and prevent mismatches. Check your panel labeling to confirm it expects a 15A, 1-pole, 120V device.

Ideal use cases

• Residential electrical panel maintenance and routine replacements
• Retrofits that add or restore 15A circuits on a 120V system
• Replacement for a failed or tripped 15A, single-pole breaker in compatible GE panels

Installation tips and practical considerations

• Power down the main circuit and verify the circuit is de-energized before working on the panel.
• Remove the old breaker and inspect the bus bar and terminals for wear; replace if damaged.
• Align the new THHQB1115ST1 with the panel’s bus bar and secure the terminals firmly for a solid connection.
• After installation, restore power and test the circuit to confirm proper operation and trip performance.