Q1B240 - 40 Amp Circuit Breaker

Q1B240 - 40 Amp Circuit Breaker

When you're replacing a breaker in an existing electrical system, getting the details right matters. The Q1B240 is a 40-amp, 2-pole thermal-magnetic circuit breaker with a bolt-on connection, designed for equipment intended for the Q1B breaker type. It is rated 10 kA I.C. at 120/240 VAC and requires four spaces. Size is another detail worth checking before installation: the breaker measures 6.38 inches high, 1.5 inches wide, and 2.31 inches deep. For maintenance work on compatible legacy equipment, the Q1B240 provides the familiar form, fit, and electrical characteristics needed to maintain the original system configuration. Its thermal magnetic design provides overload and short-circuit protection within the breaker's stated ratings. Simply put, this is a breaker for applications where the Q1B240 specifications are what the equipment calls for. Correctly matched and properly installed, it is built to last in its intended application.

Key Features and Benefits

• 40-amp rating for equipment designed around this specific current rating.
• 2-pole design for compatible two-pole circuit applications.
• Bolt-on mounting provides the connection style required by Q1B-compatible equipment.
• Thermal-magnetic operation provides protection against overload and short-circuit conditions.
• Rated 10 kA.I.C. at 120/240 VAC.
• Requires four spaces, an important detail when checking available room in existing equipment.
• Well suited to legacy electrical equipment where matching the original breaker's form, fit, and function is important.
• Clearly defined dimensions make it easier to check physical compatibility before installation.

Technical Specifications

• Part Number: Q1B240
  
• Type: Q1B
  
• Breaker Type: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Amperage: 40 Amps
  
• Poles: 2
  
• Voltage Rating: 120/240VAC
  
• A.I.C. Rating: 10k
  
• Spaces Required: 4
  
• Height: 6.38 in.
  
• Width: 1.5 in.
  
• Depth: 2.31 in.
  

Material Compliance and Certifications

• Specific material-compliance information, certifications, and listing details are not included in the available Q1B240 specifications. If your application requires a particular certification or regulatory standard, check the markings on the breaker and the appropriate technical documentation before installation. This avoids making assumptions about compliance requirements that can vary by equipment and application.

Where It Works Best

• The Q1B240 breaker is intended for compatible electrical equipment that requires a Q1B-style, 40-amp, 2-pole bolt-on circuit breaker with a 10 kA.I.C. rating at 120/240VAC. It is particularly useful in legacy-system maintenance where the goal is to replace a breaker while keeping the existing electrical configuration unchanged.