CHH2125H4 - 125Amp Circuit Breaker

CHH2125H4 - 125Amp Circuit Breaker

When you're maintaining an existing electrical system, finding the right replacement breaker isn't just about matching the amp rating—it's about making sure the new breaker fits the application and keeps the system configured the way it was originally designed. The CHH2125H4 is a 125 Amp, 2-pole molded case circuit breaker commonly used in commercial and industrial power distribution equipment that requires a 42kA interrupting rating at 240VAC.

If you're searching for a CHH2125H4, there's a good chance you're working with equipment that's already in service. Maybe a breaker has reached the end of its service life. Maybe you're completing a maintenance project or keeping spare parts available for critical equipment. In any case, matching the original breaker specifications is often the simplest and most practical approach.

The molded case construction is built to last and intended for long-term use in properly maintained electrical systems. For electricians, maintenance teams, facility managers, and contractors working with existing CHH4 installations, the CHH2125H4 is frequently chosen because it matches what's already there. Sometimes the best solution is simply replacing a breaker with the same type and rating so the system can continue operating as intended.

Key Features and Benefits

• 125 Amp current rating
• Two-pole molded case circuit breaker
• CHH4 series configuration
• Non-interchangeable trip unit
• 42kA interrupting rating at 240VAC
• Helps protect electrical circuits from overload and short-circuit conditions
• Supports form, fit, and functional replacement requirements
• Commonly used in commercial and industrial electrical systems
• Built to last in properly maintained installations
• Suitable for feeder and branch circuit protection applications
• Maintains compatibility with existing CHH4-series equipment
• Helps preserve original system design and specifications

Technical Specifications

• Part Number: CHH2125H4
  
• Type: CHH4
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 125 Amps
  
• Poles: 2
  
• Voltage Rating: 240VAC
  
• Interrupting Rating: 42kAIC @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Dimensions:
  • Width: 2.75 in.
  • Height: 7.50 in.
  • Depth: 3.06 in.
• Approximate Shipping Weight: 7.00 lbs.
  

Material Compliance and Certifications

• The CHH2125H4 is intended for installation in compatible electrical distribution equipment and should be installed, inspected, and serviced by qualified electrical personnel.
• Proper application should always be verified before installation to ensure compatibility with the electrical system and equipment.
• Installation should comply with applicable national, state, local, and facility electrical codes and requirements.

Where It Works Best

• Commercial buildings
• Industrial facilities
• Manufacturing environments
• Electrical distribution systems
• Switchboards and panelboards
• Feeder circuit protection applications
• Branch circuit protection applications
• Existing CHH4-series installations
• Maintenance and repair projects requiring matching specifications
• Facilities operating established electrical infrastructure
• Applications requiring a 125 Amp, 2-pole circuit breaker
• Systems requiring a 42kAIC interrupting rating at 240VAC