Q221125AC - 125 Amp Circuit Breaker

Q221125AC - 125 Amp Circuit Breaker

Elevate the protection and reliability of your power distribution system with the Q221125AC 125 Amp circuit breaker. This high-performance device uses thermal-magnetic technology to defend against overloads and short circuits with accuracy and consistency. The plug-on design enables fast installation — no extra hardware needed — making it an ideal choice for contractors, electricians, or facility managers who value both safety and efficiency.

Key Features & Benefits

• Dual-mode protection (thermal + magnetic): Shields your circuits from both gradual overloads and sudden faults with precision.
• Plug-on mounting: Installs directly onto the bus bar, saving you labor time and reducing wiring complexity.
• Molded case construction: Built to resist heat, impact, and environmental stress, ensuring long life in demanding conditions.
• A-C phasing flexibility: Offers compatibility for switched-phase, three-phase, or split-phase systems.
• Q-frame / Q-line compatibility: Works seamlessly in standard Q2 bus systems, simplifying upgrades or replacements.

Technical Specifications

• Current Rating: 125 A
  
• Voltage: 120/240 VAC
  
• Interrupting Capacity (AIC): 10,000 A
  
• Frame Type: Q2
  
• Poles: 2
  
• Dimensions:
  • Width: 3.00 inches
  • Length: 7.88 inches
  • Depth: 4.31 inches
• Weight: 6.50 lbs
  
• Type / Mounting: I-Line, plug-on
  

Material Compliance & Certifications

• UL-listed Materials: Fabricated from UL-listed materials, meeting or exceeding industrial safety norms.
• Performance Testing: Each breaker is individually tested for performance and safety to meet industry quality protocols.
• Safety Standards: Adheres to current electrical safety standards and regulations, so your installations remain code-compliant and safe.

Where It Works Best

• Commercial facilities: Office buildings, retail spaces, or schools that require dependable overcurrent protection in main or sub-panels.
• Industrial settings: Factories, processing plants, or heavy machinery installations that demand rugged, consistent protection.
• Residential upgrades & expansions: When converting larger panels or replacing aged breakers, this 125A unit fits well into Q-frame systems without complicated rewiring.