QBA221751 - 175 Amp Circuit Breaker

QBA221751 - 175 Amp Circuit Breaker

The QBA221751 PowerPacT Q circuit breaker is a straightforward, reliable choice for protecting 240V electrical systems. Rated at 175 amps, this 2-pole breaker is designed to handle everyday demands in commercial and industrial setups. It uses thermal-magnetic trip technology to respond to overloads and short circuits, helping prevent damage to equipment and wiring. What makes this model especially practical is how easy it is to work with. The I-Line connection on the line side helps simplify installation in compatible panelboards, and the built-in push-to-trip button gives you a quick way to test operation during maintenance. It’s the kind of breaker professionals reach for when they need something dependable that does its job without extra fuss.

Key Features and Benefits

• 175A Continuous Current Rating (80%) – Handles consistent electrical loads in demanding environments
• Thermal-Magnetic Trip Unit – Provides dependable protection from overloads and short circuits
• 10kA Interrupting Rating – Suitable for standard fault interruption at 120/208V and 240V AC
• I-Line Line-Side Connection – Helps make installation quicker and more efficient
• Mechanical Lug Load Connections – Accepts a wide range of conductor sizes
• Push-to-Trip Button – Allows for simple manual testing
• Compact Q-Frame Design – Fits easily into panelboards with limited space
• HACR Rated – Compatible with HVAC and refrigeration equipment

Technical Specifications

• Catalog Number: QBA221751
• Product Line: PowerPacT Q
• Poles: 2
• Amperage Rating: 175A
• Voltage Rating: 240V AC (50/60 Hz)
• Interrupting Capacity: 10kA @ 120/208V AC and 240V AC
• Trip Technology: Thermal-Magnetic
• Magnetic Trip: 2400A
• Mounting Type: I-Line (line side), bracket mounted
• Connections: I-Line (line), mechanical lugs (load)
• Phase Connection: AB
• Dimensions: 6.47" H x 3" W x 3.93" D
• Wire Range: AWG 4 to 300 kcmil
• Torque: 247.8 lb-in

Material Compliance and Certifications

• UL Listed
• CSA Certified
• NOM Certified
• IEC Compliant
• Meets NEMA standards for safety and performance
• These certifications indicate the breaker meets recognized safety and performance standards, helping ensure it’s suitable for professional use and code-compliant installations.

Where It Works Best

• Commercial buildings and office spaces
• Industrial facilities and manufacturing plants
• HVAC and refrigeration systems
• Panelboards using I-Line configurations
• Motor protection, lighting circuits, and general power distribution