2-Pole Q-Line Plug-In Circuit Breakers

Product Highlights

• ABB Q-Line miniature circuit breaker family
• 2-pole configuration
• Plug-in mounting
• Available from 15A through 125A
• 120V AC / 120/240V AC system applications
• 10 kAIC interrupting rating on documented models
• Non-interchangeable trip style
• LI trip function
• Fixed long-time and instantaneous functions
• Suitable for reverse feed
• HACR marking on documented models
• Designed for compatible load center and panelboard applications

ABB Q-Line breakers are compact circuit breakers designed for compatible electrical distribution equipment. The THQL models in this product group use a plug-in connection for installation in approved load centers and panelboards.

ABB identifies the documented models with a non-interchangeable LI trip configuration, fixed long-time and instantaneous functions, and suitability for reverse feed. :contentReference[oaicite:1]{index=1}

Because plug-in breakers are equipment-specific, confirm the exact load center, panelboard, bus design, system voltage, and breaker compatibility before ordering.

These THQL breakers use a plug-in mounting configuration for connection to compatible Q-Line load centers and electrical distribution equipment.

Plug-in breakers are not universally interchangeable. Verify that the exact load center or panelboard is approved for the selected THQL catalog number before installation.

• Confirm the exact catalog number before ordering.
• Verify that a 2-pole Q-Line plug-in breaker is required.
• Select the correct ampere rating for the circuit and connected equipment.
• Confirm compatibility with the exact load center or panelboard.
• Verify system voltage before installation.
• Confirm available fault current does not exceed the applicable breaker interrupting rating.
• Verify conductor material and wire size requirements for the exact catalog number selected.
• Confirm terminal and conductor requirements before installation.
• Follow ABB terminal torque specifications for the selected breaker.
• Do not substitute a bolt-on breaker where a plug-in breaker is required.
• Do not exceed the breaker or connected equipment electrical ratings.
• Maintain applicable electrical working clearances.
• De-energize equipment before installation or service.
• Verify absence of voltage before working inside electrical equipment.
• Installation and service should be performed by qualified electrical personnel.
• Follow current ABB instructions and applicable electrical codes.