ABB Q-Line THQL21125P 125A 2-Pole Circuit Breaker – Plug-In, 120/240V, 10 kAIC

Overview

The ABB Q-Line THQL21125P is a 125 amp, 2-pole circuit breaker designed for reliable protection in both residential and commercial panels. With a thermal-magnetic mechanism and a compact, plug-in form, it integrates cleanly into standard load centers, helping you optimize space without compromising performance. The device supports 120/240 VAC operation and delivers a robust interrupting capacity for demanding electrical environments, all while maintaining a streamlined footprint that fits neatly in tight panel layouts.

In practice, this breaker provides a clear, quick response to overload or short-circuit conditions. Its maneuver is governed by a quick-make/quick-break action, and the trip is readily identifiable, aiding quick maintenance checks during routine panel inspections. The design prioritizes safe, straightforward operation in busy electrical spaces where reliability matters and downtime is costly.

Key benefits

• ROBUST PROTECTION CAPABILITY — 125A, 2-pole design supports dependable protection in both home and business panels.
• ENHANCED SAFETY FEATURES — Quick-make/Quick-break operation, common trip bar, and conspicuous trip indication improve safety during servicing.
• FLEXIBLE INSTALLATION OPTIONS — Plug-in mount type mirrors many standard load centers, simplifying upgrades or replacements.
• DURABLE AND COMPACT DESIGN — A space-efficient footprint (approximately 1 inch per pole) preserves panel real estate without sacrificing durability.
• ADAPTABLE TO VARIOUS NEEDS — Optional auxiliary contacts and shunt trip accessories extend potential applications, including higher-demand or more complex protection schemes.

Applications and use cases

• Ideal for residential and light commercial panels needing reliable 125A protection.
• Suitable for feeding sub-panels or main distribution points within GE by ABB and ABB-branded installations.
• Compatible with HID systems and other high-demand loads when combined with appropriate accessories.

Authenticity and safety notes

For safety, purchase only genuine ABB-branded products or GE-by-ABB products licensed under ABB. Verify the product description, labels, and logos (ABB, GE, or GE by ABB) and look for third-party certifications such as UL, IC, or Intertek. If in doubt, consult the manufacturer’s documentation or contact customer service to confirm authenticity before purchasing.

Specs at a glance

• Voltage: 120/240 VAC
• Amp rating: 125A
• Poles: 2-pole
• Interrupting capacity: 10 kAIC
• Mount type: Plug-in
• Mechanism: Thermal-magnetic
• Panel compatibility: Load centers and lighting panels