QS2175H - 175Amp Circuit Breaker

QS2175H - 175Amp Circuit Breaker

When your electrical system demands dependable protection, the QS2175H 2-pole thermal magnetic circuit breaker is built to deliver consistent performance. Rated at 175 amps with a 22kA interrupting capacity at 120/240VAC, this breaker helps you protect electrical equipment from overloads and short circuits before they become costly problems. Whether you're upgrading an existing distribution system, replacing a worn breaker, or maintaining commercial or industrial equipment, the QS2175H provides the dependable circuit protection professionals expect.

Its thermal-magnetic trip design combines two layers of protection in a single device. The thermal element responds to sustained overloads, while the magnetic element reacts almost instantly to high fault currents. This balanced protection helps you keep electrical systems operating safely while reducing unnecessary interruptions. The breaker is also HACR rated, making it suitable for compatible heating, air conditioning, and refrigeration equipment. With support for #3 AWG through 300 kcmil copper or aluminum conductors, the QS2175H offers the installation flexibility needed for a wide variety of power distribution applications.

Key Features and Benefits

• 175-amp continuous current rating for high-capacity electrical systems.
• 2-pole design for 120/240VAC applications.
• A 22 kA interrupting capacity helps safely clear high fault currents.
• The thermal magnetic trip mechanism provides dependable overload and short-circuit protection.
• HACR rated for compatible heating, air conditioning, and refrigeration equipment.
• Wide conductor compatibility accepts #3 AWG to 300 kcmil copper or aluminum conductors.
• Designed for dependable performance in commercial and industrial electrical systems.
• Compact footprint allows for efficient installation in compatible equipment.
  

Technical Specifications

• Part Number: QS2175H
  
• Type: QSH
  
• Poles: 2
  
• Amperage: 175A
  
• Voltage Rating: 120/240VAC
  
• Interrupting Capacity: 22kA @ 120/240VAC
  
• Frequency: 60Hz
  
• Trip Unit: Thermal Magnetic
  
• HACR Rated: Yes
  
• Wire Range: #3 AWG–300 kcmil Copper/Aluminum
  
• Temperature Rating: 40°C
  
• Dimensions:
  • Height: 7.88 in.
  • Width: 2.13 in.
  • Depth: 3.00 in.

Material Compliance and Certifications

• HACR (Heating, Air Conditioning, and Refrigeration) rated.
• Designed for 60Hz AC electrical systems.
• Compatible with copper and aluminum conductors within the specified wire range.
• Manufactured to meet applicable industry performance requirements for thermal magnetic molded case circuit breakers.
  

Where It Works Best

• The QS2175H is a great fit for commercial buildings, industrial facilities, manufacturing plants, warehouses, and other demanding electrical environments where dependable overcurrent protection is essential. It's commonly used in compatible panelboards and distribution equipment serving feeders, HVAC systems, large mechanical loads, and other high-amperage circuits. If you're looking for a 175-amp, 2-pole thermal magnetic circuit breaker that combines reliable performance with dependable fault protection, the QS2175H is an excellent choice for keeping your electrical system operating safely and efficiently.