QS2175HH - 175A Circuit Breaker

QS2175HH - 175A Circuit Breaker

When your electrical system demands dependable protection under heavy loads, the QS2175HH 2-pole 175 amp circuit breaker is built to deliver. Designed for 120/240VAC electrical distribution systems, this HQS Type thermal magnetic circuit breaker helps protect valuable equipment from damaging overloads and short circuits while keeping your power system operating safely and efficiently.

With an impressive 65kA interrupting capacity, the QS2175HH is a strong choice for commercial and industrial installations where higher available fault current requires a breaker that can perform when it matters most. Its thermal magnetic trip mechanism combines long-time overload protection with fast response to short-circuit events, giving electricians, facility managers, and maintenance professionals confidence in the protection of their electrical infrastructure.

Installation is straightforward thanks to compatibility with #3 AWG through 300 kcmil copper or aluminum conductors, while its HACR Type rating makes it suitable for qualifying heating, air conditioning, and refrigeration equipment. Whether you're replacing an existing breaker or maintaining a power distribution system, the QS2175HH offers the performance and reliability professionals expect from a high-capacity molded case circuit breaker.

Key Features and Benefits

• 175 Amp Current Rating: 175 Amp continuous current rating for demanding power distribution applications.
• 2-Pole Design: 2-pole design for use on 120/240VAC electrical systems.
• 65kA Interrupting Capacity: 65kA interrupting capacity helps protect equipment in installations with high available fault current.
• Thermal Magnetic Trip Unit: The thermal magnetic trip unit provides dependable protection against overloads and short circuits.
• HQS Type Breaker: HQS Type breaker is designed for compatible electrical equipment.
• HACR Type Rated: HACR Type-rated for qualifying HVAC and refrigeration applications.
• 40°C Ambient Operation: Rated for 60Hz operation at 40°C ambient temperature.
• Wide Conductor Compatibility: Accepts #3 AWG to 300 kcmil copper or aluminum conductors for greater installation flexibility.
• Compact Design: Compact design makes efficient use of valuable panel space.
  

Technical Specifications

• Part Number: QS2175HH
  
• Type: HQS
  
• Poles: 2
  
• Amperage: 175 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity: 65kA @ 120/240VAC
  
• Frequency: 60Hz
  
• Trip Type: Thermal Magnetic
  
• HACR Rated: Yes
  
• Ambient Temperature: 40°C
  
• Wire Range: #3 AWG–300 kcmil CU/AL
  
• Dimensions:
  • Height: 7.88 in.
  • Width: 2.13 in.
  • Depth: 3.00 in.

Material Compliance and Certifications

• Thermal Magnetic Molded Case Circuit Breaker: Thermal magnetic molded case circuit breaker.
• HACR Type Rated: HACR Type rated for qualifying HVAC applications.
• 60Hz AC Systems: Designed for 60Hz AC electrical systems.
• Conductor Compatibility: Compatible with copper (CU) and aluminum (AL) conductors within the specified wire range.
• Industry Performance Standards: Manufactured to meet applicable industry performance standards for this class of circuit breaker.
  

Where It Works Best

• The QS2175HH is a great fit for commercial buildings, industrial facilities, manufacturing plants, institutional campuses, and other demanding electrical installations where dependable 175 amp overcurrent protection is essential. It's commonly used to protect feeders, distribution panels, HVAC equipment, and large electrical loads operating on 120/240VAC systems. With its high 65kA interrupting rating and proven thermal magnetic protection, this breaker is well-suited for applications where reliability and consistent performance are critical.