THQL1120AF2 - 20 Amp Circuit Breaker

THQL1120AF2 - 20 Amp Circuit Breaker

Power your installation with confidence using the THQL1120AF2 20A Arc Fault Circuit Interrupter (AFCI)—a modern, smart protector designed to detect dangerous electrical arcs and interrupt them before damage or fire can occur. With its sleek, narrow 1‑inch width per pole and plug‑in Q‑Line design, this breaker suits high-density panels and tight spaces without compromising performance. The built-in thermal‑magnetic trip mechanism delivers reliable and consistent protection, while its visible trip indicator lets technicians spot and reset the breaker quickly. Engineered for both residential load centers and commercial lighting systems, the THQL1120AF2 complies with industry safety standards and is ideal wherever code‑required arc fault protection is essential.

Key Features and Benefits

• Combination Arc‑Fault Protection: Detects both parallel and series arcs to protect wiring from fire risks. (Also known as AF2 protection)
• Ultra‑compact, space‑saving footprint: Only one inch per pole, making it ideal for panels with limited real estate.
• Thermal‑Magnetic Trip Operation: Offers fast make/break response and stable performance under varying loads.
• Visible Trip Indicator: Lets users immediately see which breaker has tripped, simplifying troubleshooting.
• Plug‑in Q‑Line Format: Snaps directly into compatible panels—installation or replacement is fast and clean.
• Accessory Ready: Compatible with auxiliary contacts and shunt trip modules for applications requiring remote signaling or control.

Technical Specifications

• Amperage: 20 A
• Poles: 1 (single‑pole)
• System Voltage: 120 VAC or 120/240 VAC split‑phase
• Interrupting Capacity: 10 kAIC at 120 VAC and 120/240 VAC
• Trip Type: Non‑interchangeable, fixed LI (long‑time + instantaneous) profile
• Special Markings: HACR (Heating, Air Conditioning, Refrigeration) and SWD (Switch Duty) rated
• Reverse Feedable: Yes (supports panel wiring flexibility)
• Wire Range: 14 to 10 AWG (copper / aluminum)

Material Compliance and Certifications

• UL‑Listed: Certified under UL File # E11592 for safety and performance assurance
• GSA Approval: Meets General Services Administration requirements, suitable for government and institutional installations

Where It Works Best

• This breaker truly shines in locations where arc fault protection is mandated—single-family homes, apartments, offices, and light commercial settings. Thanks to its slim, one‑inch profile, it fits neatly in crowded load panels or retrofit scenarios with limited space. It’s especially well suited for circuits feeding HID lighting, or panels where auxiliary control or shunt trip integration might be required later. Whenever you want to combine high safety, clean installation, and code compliance, the THQL1120AF2 is a top pick.