Q221125AC - 125 Amp Circuit Breaker

Q221125AC - 125 Amp Circuit Breaker

When you're replacing a breaker in an existing electrical system, the small details matter. The Q221125AC is a Type Q2, 2-pole, 125-amp molded-case circuit breaker with a thermal-magnetic trip mechanism. It is rated 10 kA I.C. at 120/240 VAC and uses an I-Line plug-on connection with A-C phasing and a Q-Frame configuration. Those specifications make the Q221125AC useful for maintenance and replacement work where the existing equipment calls for this particular breaker style. It measures 7.88 inches high, 3 inches wide, and 4.31 inches deep, so installers can compare both the electrical ratings and physical size with the breaker being replaced. The molded case construction is built to last when the breaker is correctly installed, maintained, and used within its stated ratings. If you're trying to match an existing Q221125AC, don't stop at the 125A rating. Check the poles, voltage, A.I.C. rating, phasing, frame, connection style, and dimensions as well. They're all important when determining whether a breaker is the right fit for the equipment.

Key Features and Benefits

• 125-amp, 2-pole design for applications that specifically require these ratings.
• Rated 120/240VAC with a 10k A.I.C. interrupting rating.
• Thermal-magnetic trip provides overload and short-circuit protection within the breaker's specified ratings.
• The Q-Frame Type Q2 configuration helps ensure accurate identification when replacing an existing breaker.
• A-C phasing for equipment designed around this phase arrangement.
• I-Line plug-on connection for compatible electrical distribution equipment.
• Molded-case construction protects the internal operating components and is built to last with proper application and maintenance.
• Defined dimensions make it easier to check physical fit before installation.
• Well suited to maintenance and replacement situations where keeping the original form, fit, and function is important.

Technical Specifications

• Part Number: Q221125AC
  
• Type: Q2
  
• Frame: Q-Frame
  
• Breaker Type: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage: 125A
  
• Voltage: 120/240VAC
  
• A.I.C. Rating: 10k @ 120/240VAC
  
• Trip Type: Thermal Magnetic
  
• Phasing: A-C
  
• Connection: I-Line, Plug-On
  
• Height: 7.88 in.
  
• Width: 3.0 in.
  
• Depth: 4.31 in.
  

Material Compliance and Certifications

• Certification and material-compliance requirements can depend on the individual breaker and the equipment in which it will be installed. For that reason, any required listings, certifications, or compliance information should be verified from the label, nameplate, and documentation supplied with the specific Q221125AC unit.
• This is especially important with components used in existing or legacy electrical systems. Before installation, confirm the breaker's markings and ratings against the equipment requirements, project specifications, and applicable electrical codes.

Where It Works Best

• The Q221125AC is best suited to existing electrical distribution equipment that specifically calls for a Q2, Q-Frame, 2-pole, 125A breaker with A-C phasing and an I-Line plug-on connection. It's a practical option for repair and maintenance work where the goal is to match the original breaker's form, fit, and electrical function.