Q2M3150MB - 150 Amp Circuit Breaker

Q2M3150MB - 150 Amp Circuit Breaker

Need to match a Q2M3150MB circuit breaker already installed in existing equipment? Start with the details that actually matter. This Type Q2MB thermal-magnetic circuit breaker is rated at 150 amps, has 3 poles, and carries a 10 kA A.I.C. rating at 240 VAC. It uses a non-interchangeable trip unit and has 1/4-20-inch studs on the line side, with lug terminals on the load side. Those connection details are worth checking carefully, especially when you're trying to match a breaker in older or legacy electrical equipment. The Q2M3150MB measures 6.5 inches high, 4.5 inches wide, and 3.13 inches deep. Rather than choosing a replacement based on amperage alone, compare the breaker type, dimensions, number of poles, interrupting rating, and terminal arrangement with your existing unit. When the specifications line up with the equipment requirements, the Q2M3150MB provides the form, fit, and function needed for its intended application. It's a straightforward breaker with durable construction, built to last when properly applied and maintained.

Key Features and Benefits

• 150-amp rating for equipment designed around this specific breaker configuration.
• 3-pole design for compatible three-pole applications.
• Thermal-magnetic operation provides overcurrent protection through thermal and magnetic trip functions.
• 10 kA A.I.C. at 240 VAC interrupting rating.
• Non-interchangeable trip unit, an important characteristic when matching an existing breaker.
• 1/4-20-inch line-side studs and load-side lug terminals provide the connection arrangement used by this model.
• Compact 6.5 x 4.5 x 3.13-inch dimensions make it easy to compare the physical size with an existing installation.
• Well suited to form, fit, and functional replacement needs where the original equipment calls for matching Q2MB specifications.

Technical Specifications

• Part Number: Q2M3150MB
  
• Type: Q2MB
  
• Breaker Style: Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Amperage: 150 A
  
• Poles: 3
  
• A.I.C. Rating & Voltage: 10 kA @ 240 VAC
  
• Height: 6.5 in.
  
• Width: 4.5 in.
  
• Depth: 3.13 in.
  
• Line Side: 1/4-20 in. Studs
  
• Load Side: Lug Terminals
  

Material Compliance and Certifications

• Specific certification, agency listing, and material compliance information was not included in the available specifications for the Q2M3150MB, so we don't make assumptions about those details. If your application requires a particular listing, certification, or material standard, check the labeling on the individual breaker and the applicable technical documentation before installation.
• Electrical code requirements can also vary by application and location. The breaker should be installed and used in accordance with applicable codes, equipment requirements, and the authority having jurisdiction.

Where It Works Best

• The Q2M3150MB is primarily suited to existing and legacy electrical equipment that calls for this Type Q2MB configuration. This is where checking the whole breaker, not just the amp rating, becomes important.
  Take a look at the breaker you're replacing. Does it require 150 amps, three poles, a 10 kA rating at 240 VAC, 1/4-20-inch line-side studs, and load-side lug terminals? Do the physical size and Q2MB configuration match? If so, the Q2M3150MB may be appropriate for maintaining the original form, fit, and function of that equipment.