General Electrics THQL1120AF - 20 A, 1-Pole Plug-In Circuit Breaker | AmpState

Meet the General Electrics THQL1120AF — a 20A, 1-pole plug-in molded case circuit breaker built to safeguard branch circuits with precision in panelboards and loadcenters. Designed for fast, reliable protection, this unit keeps your electrical system flowing smoothly while simplifying maintenance and replacements.

Why this breaker stands out

• Fast plug-in connection enables quick installation and easy replacements, minimizing downtime during panel upgrades or circuit fixes.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining a thermal element for sustained overloads with a magnetic trip for sudden short circuits, helping prevent nuisance trips and wasted wiring.
• OEM compatibility is designed to pair with matching GE OEM load centers and panelboards, ensuring dependable fit and reliable performance in established electrical systems.
• Versatile across settings ideal for residential, commercial, and light industrial applications where reliable branch-circuit protection is essential.

Key applications and use cases

Engineered for panelboards and loadcenters that accept THQL-series breakers, the THQL1120AF protects individual branch circuits such as lighting, outlets, and small-appliance circuits. Its plug-in design makes it an efficient choice for installations where downtime matters—retrofits, panel upgrades, or quick replacements after a tripped circuit.

Technical specifications at a glance

• Manufacturer: General Electrics
• Part Number: THQL1120AF
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips for optimal performance

• Ensure the panel or load center is designed to accept THQL-series plug-in breakers for a proper, secure fit.
• When replacing a previously tripped breaker, reset the main switch first, then test the new THQL1120AF to confirm normal operation of the protected circuit.
• Use in circuits that align with a 20A rating to protect wiring and devices without unnecessary tripping, especially in lighting and receptacle branches.
• Store and handle breakers in their original packaging until installation to prevent mechanical damage to terminals and bus connections.