CHH3125H4 - 125Amp Circuit Breaker

CHH3125H4 - 125 Amp Circuit Breaker

The CHH3125H4 molded case circuit breaker is designed for use in commercial and industrial electrical distribution systems that require dependable overcurrent protection for three-phase circuits. Rated at 125 amperes with a 42kA interrupting capacity at 240VAC, this breaker helps protect conductors and connected equipment from overloads and short circuits while maintaining compatibility with CHH4 frame applications. Built with a non-interchangeable trip unit, the CHH3125H4 maintains consistent trip characteristics matched to the breaker’s design. Its molded case construction and compact footprint allow it to fit properly into existing equipment designed for CHH4 frame breakers, making it suitable for maintaining or servicing established electrical installations. Units like this are built to last and are commonly used where stable, properly rated circuit protection is required in legacy power distribution systems.

Key Features and Benefits

• 125 Amp Current Rating – Designed for circuits requiring mid-range amperage protection in commercial or industrial distribution systems.
• 3-Pole Configuration – Provides protection for three-phase electrical systems.
• 42kA Interrupting Capacity at 240VAC – Capable of safely interrupting high fault currents within rated conditions.
• CHH4 Frame Compatibility – Designed to match installations requiring the CHH4 molded case breaker frame type.
• Non-Interchangeable Trip Unit – Factory-matched trip unit ensures calibrated and consistent overcurrent protection.
• Molded Case Construction – Enclosed design helps protect internal components and supports long service life.
• Form, Fit, and Functional Replacement – Suitable for maintaining existing systems that require a breaker with these exact ratings and frame specifications.

Technical Specifications

• Part Number: CHH3125H4
  
• Breaker Type: Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage Rating: 125A
  
• Interrupting Capacity: 42kA @ 240VAC
  
• Frame Type: CHH4
  
• Trip Unit: Non-Interchangeable
  
• Approximate Shipping Weight: 4.13 lbs
  
• Approximate Shipping Height: 7.5 in
  

Material Compliance and Certifications

• Industry Standards: This molded case circuit breaker is manufactured to align with commonly recognized electrical safety and performance standards applicable to molded case circuit protection devices.
• NEC Compatibility: Such breakers are typically designed for use in systems installed according to National Electrical Code (NEC) guidelines and are produced to meet applicable industry certification requirements used in electrical distribution equipment.
  

Where It Works Best

• Commercial building distribution panels
• Industrial power distribution systems
• Equipment control panels using three-phase circuits
• Maintenance or service replacement in compatible panelboards or switchboards
• Electrical systems requiring a breaker with 125A capacity and 42kA interrupting rating at 240VAC