THJK436175 - 175Amp Circuit Breaker

THJK436175 - 175 Amp Circuit Breaker

The THJK436175 is a 175-amp, 3-pole molded case circuit breaker designed for use in your commercial and industrial electrical distribution systems where dependable circuit protection is required. Part of the THJK4 Q-Line series, this bolt-on circuit breaker features a thermal magnetic trip unit, internal common trip, and non-interchangeable trip design, helping to protect your electrical equipment and conductors from overloads and short circuits. Built to last and engineered for compatibility with designated Q-Line panelboard and switchboard applications, the THJK436175 offers a practical solution for maintaining and servicing existing electrical systems. Included load-side lugs simplify installation while supporting secure conductor termination.

Key Features and Benefits

• 175 Amp Current Rating: 175 Amp current rating for higher-capacity power distribution applications.
• 3-Pole Configuration: 3-pole configuration designed for three-phase electrical systems.
• THJK4 Frame Type: THJK4 frame type for compatibility with designated Q-Line equipment.
• Bolt-On Mounting Design: Bolt-on mounting design provides a secure connection within approved installations.
• Thermal Magnetic Trip Unit: Thermal magnetic trip unit delivers protection against both overload and short-circuit conditions.
• Internal Common Trip Mechanism: Internal common trip mechanism helps ensure all poles trip simultaneously during fault conditions.
• Non-Interchangeable Trip Unit: Non-interchangeable trip unit maintains factory-configured protection settings.
• HACR Rated: HACR rated for applications involving heating, air conditioning, and refrigeration equipment.
• Included Load-Side Lugs: Includes load-side lugs for convenient conductor connections.
• Molded Case Construction: Molded case construction designed for long-term service in demanding electrical environments.

Technical Specifications

• Part Number: THJK436175
  
• Type: THJK4
  
• Current Rating: 175 Amps
  
• Poles: 3
  
• Trip Unit: Thermal Magnetic
  
• Mounting Style: Bolt-On
  
• Series: Q-Line
  
• Interrupting Rating: 25kA @ 600VAC
  
• Interrupting Rating: 35kA @ 480VAC
  
• Interrupting Rating: 65kA @ 240VAC
  
• Trip Design: Non-Interchangeable
  
• Common Trip: Internal Common Trip
  
• HACR Rated: Yes
  
• Included Accessories: Load-Side Lugs
  
• Dimensions:
  • Height: 10.13 in.
  • Width: 8.25 in.
  • Depth: 3.81 in.

Material Compliance and Certifications

• Industry Standards: The THJK436175 is a molded case circuit breaker manufactured for use in accordance with applicable industry standards governing low-voltage power distribution equipment.
• HACR Rated: The breaker is HACR rated, making it suitable for approved heating, air conditioning, and refrigeration applications.
• Compliance Requirements: Always verify compliance requirements and installation practices according to local electrical codes, equipment specifications, and project requirements.

Where It Works Best

• The THJK436175 is commonly used in commercial buildings, industrial facilities, manufacturing operations, distribution equipment, and other three-phase power systems requiring a 175-amp circuit breaker. It is particularly well suited for installations utilizing compatible Q-Line panelboards and switchboards, as well as applications involving motor loads, HVAC equipment, power distribution circuits, and feeder protection. Its combination of thermal magnetic protection, common trip operation, and high interrupting ratings makes it a practical choice for maintaining existing electrical infrastructure while preserving proper form, fit, and function.