QSH2175 - 175 Amp Circuit Breaker

QSH2175 - 175 Amp Circuit Breaker

The QSH2175 is a 2-pole, 175-amp thermal magnetic circuit breaker designed to provide dependable overcurrent and short-circuit protection for 120/240VAC electrical distribution systems. Built as a Type QSHH breaker with a 42kA interrupting rating, it is well-suited for demanding commercial and industrial applications where reliable circuit protection is essential. Its thermal magnetic trip mechanism helps protect electrical equipment by responding to prolonged overloads as well as instantaneous fault conditions, supporting system safety and minimizing the risk of equipment damage. Rated for 60Hz operation, HACR applications, and 40°C ambient conditions, the QSH2175 also accepts a wide conductor range from #3 AWG to 300 kcmil copper or aluminum, offering installation flexibility across a variety of power distribution systems. Whether you're replacing an existing breaker or maintaining critical electrical infrastructure, the QSH2175 delivers dependable performance where consistent circuit protection matters most.

Key Features and Benefits

• 175 Amp Current Rating: 175 Amp continuous current rating for higher-capacity electrical distribution applications.
• 2-Pole Configuration: 2-pole configuration for protecting 120/240VAC circuits.
• Thermal Magnetic Trip Technology: Thermal magnetic trip technology provides protection against both overloads and short-circuit faults.
• 42kA Interrupting Capacity: 42kA interrupting capacity at 120/240VAC helps safeguard electrical systems during high fault-current events.
• Type QSHH Design: Type QSHH circuit breaker designed for compatible electrical distribution equipment.
• HACR Rated: HACR rated for approved heating, air conditioning, and refrigeration applications.
• 60Hz, 40°C Rated: 60Hz, 40°C rated for dependable operation under standard commercial and industrial conditions.
• Flexible Conductor Range: Accepts #3 AWG to 300 kcmil copper or aluminum conductors, providing installation flexibility.
  

Technical Specifications

• Part Number: QSH2175
  
• Type: QSHH
  
• Poles: 2
  
• Amperage: 175 Amps
  
• Voltage Rating: 120/240VAC
  
• Interrupting Rating (A.I.C.): 42kA @ 120/240VAC
  
• Frequency: 60Hz
  
• Trip Unit: Thermal Magnetic
  
• HACR Rated: Yes
  
• Ambient Rating: 40°C
  
• Wire Range: #3 AWG–300 kcmil Copper or Aluminum
  
• Dimensions:
  • Height: 7.88 in.
  • Width: 2.13 in.
  • Depth: 3.00 in.

Material Compliance and Certifications

• Thermal Magnetic Construction: Thermal magnetic circuit breaker construction.
• HACR Rated: HACR rated for heating, air conditioning, and refrigeration equipment.
• 60Hz Electrical Systems: Designed for 60Hz electrical systems.
• 40°C Ambient Rating: Rated for operation in 40°C ambient environments.
• Conductor Compatibility: Compatible with copper and aluminum conductors within the specified wire range (#3 AWG–300 kcmil).
  

Where It Works Best

• The QSH2175 is an excellent choice for commercial buildings, industrial facilities, manufacturing plants, electrical distribution panels, HVAC systems, and other high-capacity power distribution applications requiring a 175-amp, 2-pole circuit breaker. Its high interrupting capacity and thermal magnetic protection make it well suited for installations where dependable protection against overloads and fault currents is critical to maintaining safe and reliable electrical operation.