Q2M3125MB - 125 Amp Circuit Breaker

Q2M3125MB - 125 Amp Circuit Breaker

Need a Q2M3125MB for an existing installation? This Type Q2MB thermal-magnetic circuit breaker is rated at 125 amps and has a 3-pole configuration, with an interrupting rating of 10 kA at 240 VAC. One detail to pay close attention to is the connection style. The breaker has 1/4-20" studs on the line side and lug terminals on the load side, so it's worth checking those connections against the breaker you're replacing. The trip unit is non-interchangeable. At 6.5" high, 4.5" wide, and 3.13" deep, the Q2M3125MB is intended for equipment that calls for this particular size and Q2MB configuration. It's a practical choice for maintaining compatibility with legacy electrical equipment when keeping the original form, fit, and function is important. Like any electrical component, correct application matters. When properly matched to the equipment and used within its stated ratings, the Q2M3125MB is built to last.

Key Features and Benefits

• 125-amp rating for equipment requiring this specific amperage
• 3-pole design for compatible three-pole applications
• Thermal magnetic trip operation
• 10k AIC at 240VAC
• Type Q2MB configuration
• Non-interchangeable trip unit
• 1/4-20" studs on the line side
• Lug terminals on the load side
• Dimensions suited to equipment designed around the Q2MB form factor
• A useful option for maintaining the original configuration of compatible legacy equipment

Technical Specifications

• Part Number: Q2M3125MB
  
• Type: Q2MB
  
• Operation: Thermal Magnetic
  
• Poles: 3
  
• Amperage: 125A
  
• AIC / Voltage Rating: 10k @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Height: 6.5 in.
  
• Width: 4.5 in.
  
• Depth: 3.13 in.
  
• Line-Side Connection: 1/4-20" Studs
  
• Load-Side Connection: Lug Terminals
  

Material Compliance and Certifications

• Certification and material-compliance information isn't included in the available specifications for this breaker. If a specific approval or compliance standard is required for the job, check the markings on the actual Q2M3125MB and confirm they meet the requirements for the equipment and installation. No certification should be assumed unless it is shown on the product or supported by the appropriate documentation.

Where It Works Best

• The Q2M3125MB makes the most sense when you're working on an existing or legacy electrical system that already calls for this breaker configuration. It's intended for applications requiring a 125A, 3-pole Q2MB thermal-magnetic breaker with a 10k AIC rating at 240VAC.