QBA221754 - 175 Amp Circuit Breaker

QBA221754 - 175 Amp Circuit Breaker

If you need dependable 175-amp protection for a 240V system, the QBA221754 PowerPact Q-Frame circuit breaker is built to handle the job. This 2-pole, thermal magnetic molded case circuit breaker is rated for 10kA at 240VAC, making it a practical choice for commercial and light industrial applications where consistent overcurrent protection is critical. Designed in an I-Line, plug-on configuration with a B-C phase connection, it fits into compatible distribution equipment without unnecessary modifications.

Inside, the thermal magnetic trip mechanism responds to both prolonged overloads and sudden short circuits. The thermal element reacts to heat caused by overcurrent over time, while the magnetic trip engages quickly during high fault conditions. That combination helps protect wiring, connected equipment, and downstream components from damage—without overcomplicating the installation or maintenance process.

Compact for its rating and weighing approximately 3 lbs, this QBA-frame breaker offers a straightforward solution when a 175A, 2-pole breaker is specified for 240VAC systems.

Key Features and Benefits

• 175 Amp Rating – Supports medium-load commercial and industrial circuits
• 2-Pole Design – Suitable for 240VAC applications
• 10kA Interrupting Capacity @ 240VAC – Helps manage available fault current
• Thermal Magnetic Trip – Dual-response protection for overloads and short circuits
• PowerPact Q-Frame Construction – Designed for long-term reliability
• I-Line, Plug-On Mounting – Streamlines installation in compatible panelboards
• B-C Phase Configuration – Matches specified system layouts

Technical Specifications

• Part Number: QBA221754
  
• Frame Type: QBA (PowerPact Q-Frame)
  
• Poles: 2
  
• Amperage: 175A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Trip Type: Thermal Magnetic
  
• Mounting Style: I-Line, Plug-On
  
• Phase: B-C
  
• Height: 7.88 inches
  
• Ship Weight: 3.0 lbs
  

Material Compliance and Certifications

• Industry Standards: This molded case circuit breaker is manufactured to meet recognized industry standards for low-voltage power distribution equipment.
• UL and CSA Requirements: It is designed in alignment with applicable UL and CSA requirements and supports NEC-compliant installations when used within its rated specifications. Always confirm system compatibility and local code requirements before installation.

Where It Works Best

• Commercial distribution panels
• Retail and office buildings
• Light manufacturing facilities
• Equipment feeder circuits
• Electrical system upgrades requiring a 175A, 2-pole, 240V breaker