Q1B350 - 50 Amp Circuit Breaker

Q1B350 - 50 Amp Circuit Breaker

When you're replacing a breaker in existing equipment, getting the details right matters. The Q1B350 is a 50-amp, 3-pole Q1B circuit breaker with a bolt-on design and thermal-magnetic trip operation. It's rated 10 kA I.C. at 240 VAC and is intended for equipment designed around the Q1B breaker configuration.

Fit is just as important as the electrical ratings. The Q1B350 measures 6.38 inches high, 2.25 inches wide, and 2.31 inches deep and requires six spaces. Those dimensions, along with the mounting style, pole count, amperage, and voltage rating, should all be checked when matching a breaker to an existing application.

For maintenance and replacement work, the goal is simple: find a breaker that meets the equipment's requirements. If your system calls for the Q1B350 specifications, this breaker provides the correct combination of 50A capacity, three poles, bolt-on mounting, and 240VAC rating. It's a straightforward component built to last when properly matched, installed, and maintained.

Key Features and Benefits

• 50-amp rating for applications requiring a 50A circuit breaker.
• Three-pole design for compatible three-pole AC circuits.
• Bolt-on mounting provides the connection style required by Q1B-compatible equipment.
• Thermal-magnetic trip operation provides overcurrent protection within the breaker's specified application.
• 10 kA I.C. at 240 VAC gives you a clearly defined interrupting rating to match system requirements.
• A six-space footprint helps confirm panel and equipment fit before installation.
• Q1B configuration makes this breaker suitable for existing equipment designed around this specific breaker type.
• Built to last when used within its specified ratings and properly maintained.

Technical Specifications

• Part Number: Q1B350
  
• Type: Q1B
  
• Breaker Type: Thermal Magnetic
  
• Mounting Style: Bolt-on
  
• Amperage: 50A
  
• Poles: 3
  
• Voltage: 240VAC
  
• A.I.C. Rating: 10k at 240VAC
  
• Height: 6.38 in.
  
• Width: 2.25 in.
  
• Depth: 2.31 in.
  
• Space Requirement: 6 spaces
  

Material Compliance and Certifications

• Material compliance and agency certification details were not provided in the available specifications for the Q1B350, so no specific UL, CSA, RoHS, or other certification is claimed here. If your application requires a particular certification or listing, check the markings on the breaker and the applicable equipment documentation before installation.

Where It Works Best

• The Q1B350 circuit breaker is a good fit for maintenance and replacement applications involving existing electrical distribution equipment designed for Q1B bolt-on breakers. It's especially relevant when you need to maintain the system's original form, fit, and electrical characteristics rather than change the equipment configuration.