CHH2125H4 - 125Amp Circuit Breaker

CHH2125H4 - 125 Amp Circuit Breaker

The CHH2125H4 molded case circuit breaker is designed to provide dependable circuit protection in electrical distribution systems that require a 125-amp, 2-pole breaker with a 42kA interrupting rating at 240VAC. Built on the CHH4 frame platform and equipped with a non-interchangeable trip unit, this breaker is intended for applications where the original breaker configuration must remain consistent for proper system operation. Its molded case construction houses the internal protective components in a compact, durable enclosure that helps safeguard electrical equipment from overloads and short circuits. Installers and maintenance professionals often rely on breakers like the CHH2125H4 when maintaining or servicing existing electrical panels and distribution equipment that require the correct frame type, pole configuration, and interrupting capacity. These units were built to last and remain a practical option when matching specifications for established systems.

Key Features and Benefits

• 125 Amp Rating – Designed to handle circuits requiring up to 125 amps of current.
• 2-Pole Configuration – Provides protection for two connected circuits or phases within compatible panel systems.
• 42kA Interrupting Capacity at 240VAC – Suitable for installations where higher available fault current must be safely interrupted.
• CHH4 Frame Type – Ensures proper fit and compatibility with electrical equipment designed for CHH4 frame breakers.
• Non-Interchangeable Trip Unit – Factory-configured trip characteristics help maintain consistent protection settings.
• Molded Case Design – Encased components help protect the internal mechanism from environmental and handling conditions.
• Form, Fit, and Functional Replacement – Used to maintain or service existing electrical systems requiring this exact breaker type.

Technical Specifications

• Part Number: CHH2125H4
  
• Breaker Type: Molded Case Circuit Breaker
  
• Poles: 2
  
• Amperage Rating: 125A
  
• Interrupting Rating: 42kA @ 240VAC
  
• Frame Type: CHH4
  
• Trip Unit: Non-Interchangeable
  
• Approximate Shipping Weight: 2.75 lbs
  
• Approximate Height: 7.5 in
  

Material Compliance and Certifications

• Industry Standards: Circuit breakers of this class are manufactured to meet widely recognized industry safety and performance standards for molded case circuit protection.
• UL and NEMA Guidelines: They are typically evaluated for compliance with applicable UL and NEMA guidelines governing electrical distribution components used in commercial and industrial environments. Compliance with these standards supports safe installation and operation when used within equipment rated for the same electrical specifications.
  

Where It Works Best

• The CHH2125H4 circuit breaker is commonly used in electrical systems that require a 125-amp, 2-pole breaker with a 42kA interrupting rating within compatible CHH4 frame equipment. Typical applications include:
• Commercial and industrial distribution panels
• Electrical control panels and switchboards
• Facility power distribution systems
• Maintenance and service of existing panelboards requiring a CHH4 frame breaker
• Replacement of breakers in legacy electrical equipment where the same specifications must be maintained