CAH3125X - 125Amp Circuit Breaker

CAH3125X - 125 Amp Circuit Breaker

The CAH3125X is a 3-pole, 125 amp molded case circuit breaker designed for dependable overcurrent protection in 240VAC electrical distribution systems. Built on the CAH frame platform, this breaker is rated for 22kA interrupting capacity at 240 volts AC and calibrated for operation at 40°C. It features a non-interchangeable trip unit and includes load-side lugs for secure, straightforward installation. If you’re maintaining or servicing equipment that requires a CAH frame breaker, this model is designed to match the original footprint and electrical ratings for proper form, fit, and function. It’s commonly used in commercial and light industrial applications where consistent, code-compliant circuit protection is essential. Like many molded case breakers of its class, it’s built to last and designed to perform reliably within its specified ratings.

Key Features and Benefits

• 125 Amp Rating: Suitable for feeder or branch circuit protection within its rated capacity.
• Three-Pole Design: Protects all three phases in standard 3-phase power systems.
• 22kA Interrupting Rating at 240VAC: Safely interrupts fault currents up to 22,000 amps at 240 volts AC.
• CAH Frame Configuration: Designed to fit panels and switchgear assemblies that require a CAH frame breaker.
• Non-Interchangeable Trip Unit: Factory-set trip mechanism for consistent overcurrent protection.
• 40°C Calibration: Intended for normal ambient temperature environments such as electrical rooms.
• Load-Side Lugs Included: Provides secure termination points for conductors during installation.

Technical Specifications

• Part Number: CAH3125X
  
• Amperage: 125A
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 22kA @ 240VAC
  
• Frame Type: CAH
  
• Trip Unit: Non-Interchangeable
  
• Calibration: 40°C
  
• Breaker Type: Molded Case Circuit Breaker
  
• Load-Side Lugs: Included
  
• Approximate Shipping Weight: 4.13 lbs
  
• Shipping Height: 6.5 in
  

Material Compliance and Certifications

• Industry Standards: The CAH3125X molded case circuit breaker is manufactured to meet applicable industry standards for circuit protection devices and is intended for installation in systems designed in accordance with NEC requirements.
• Compatibility Notice: Always verify compatibility with your specific panelboard or switchgear and ensure installation complies with local electrical codes and regulations.

Where It Works Best

• This breaker is well suited for commercial facilities, light manufacturing environments, and institutional buildings operating on 240VAC three-phase systems. It’s typically used in distribution panels, subpanels, and equipment requiring a 125 amp, CAH frame breaker. When maintaining existing electrical systems, matching the correct frame type and rating is critical—and the CAH3125X is designed to meet those original specifications without modification.