GE 20 Amp Molded Case Circuit Breaker THQB1120AF2 - 20 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState

GE THQB1120AF2: 20 Amp 1-Pole Bolt-On Molded Case Circuit Breaker

When you need reliable overcurrent protection in a panelboard or load center, the GE THQB1120AF2 delivers precise, consistent performance in a compact molded case. This 20 amp, 120 volt, 1-pole breaker is built for real-world electrical protection, providing a clear line of defense against overloads and short circuits in residential, commercial, and light industrial applications.

Why this breaker stands out

• Secure bolt-on mounting — a rigid bus connection that resists vibration and minimizing movement over time, helping maintain dependable electrical continuity in challenging environments.
• Thermal-magnetic trip unit — combines temperature-based sensing with magnetic trip capability for stable, repeatable protection. This design reduces nuisance trips while ensuring fast response to dangerous faults.
• Molded case construction — a robust, compact enclosure that simplifies handling, installation, and field replacement across various panelboard configurations.
• OEM-compatible and versatile — engineered to be compatible with matching GE OEM load centers and panelboards, making it a reliable replacement or upgrade option.
• Residential, commercial, and light industrial ready — designed to safeguard branch circuits in a wide range of settings, from home distribution panels to moderate-duty commercial and light industrial installations.

Key specifications at a glance

• Manufacturer: GE
• Part number: THQB1120AF2
• Amperage rating: 20A
• Voltage rating: 120V
• Poles: 1 (single-pole)
• Mounting style: Bolt-on
• Type: Thermal-magnetic molded case circuit breaker
• Primary use: Branch circuit overcurrent and short-circuit protection

Practical use cases and scenarios

• Replacing a failing 20A breaker in residential service panels to restore reliable lighting and appliance protection.
• Upgrading older panelboards to include a modern, thermally robust protection device that aligns with GE OEM configurations.
• Installing in light commercial environments where vibration resistance and consistent trip performance are critical for uptime.
• Pairing with compatible load centers for a cohesive protective device lineup that simplifies maintenance and diagnostics.

Why choose GE THQB1120AF2 over alternatives

• Regionally compatible with GE load centers and panelboards, reducing the risk of misfit or coordination issues in mixed-brand setups.
• The thermal-magnetic design provides a balanced protection profile, helping protect conductors and connected equipment from both overload conditions and short circuits without frequent recalibration.
• Bolt-on mounting offers a secure, serviceable connection, essential in panels that experience vibration, temperature cycling, or occasional mechanical stress.

Tips for installation and maintenance

Handle with standard safety precautions and ensure the power is shut off before servicing. Verify panelboard compatibility with the GE THQB1120AF2 part number for a seamless replacement. Regularly inspect bus connections and mounting hardware during routine electrical maintenance to maximize longevity and performance.