CAH3125Y - 125Amp Circuit Breaker

CAH3125Y - 125 Amp Circuit Breaker

The CAH3125Y molded case circuit breaker is a 3-pole, 125 amp breaker designed for dependable circuit protection in commercial and industrial electrical distribution systems. Built on the CAH frame platform, this breaker features a non-interchangeable trip unit calibrated for operation at 40°C and provides an interrupting capacity of 22kA at 240VAC. It is engineered for proper form, fit, and function when replacing an existing CAH frame breaker in compatible panelboards or switchgear. With line-side lugs included, the CAH3125Y allows for secure conductor terminations and straightforward installation in legacy systems where this frame type is specified. Constructed as a molded case circuit breaker (MCCB), it is designed to handle overload and short-circuit protection demands in environments where consistent performance and code compliance are essential.

At approximately 6.5 inches in height and a ship weight of 4.13 lbs, the CAH3125Y maintains a compact footprint relative to its amperage rating, making it suitable for space-conscious electrical enclosures. As with all properly rated molded case circuit breakers, correct application according to voltage, amperage, and interrupting capacity is critical to maintaining electrical system safety and reliability.

Key Features and Benefits

• 125 Amp Continuous Rating: Designed to protect branch circuits and feeder applications requiring 125A overcurrent protection.
• 3-Pole Configuration: Suitable for three-phase electrical systems commonly found in commercial and industrial installations.
• 22kA Interrupting Capacity at 240VAC: Rated to safely interrupt fault currents up to 22,000 amps at 240 volts AC.
• CAH Frame Type: Ensures proper compatibility in equipment designed for CAH frame molded case circuit breakers.
• Non-Interchangeable Trip Unit: Factory-set trip characteristics help maintain consistent overcurrent protection parameters.
• 40°C Calibration: Rated for operation in standard ambient temperature conditions.
• Line-Side Lugs Included: Supports secure conductor termination without the need for additional lug kits.
• Built to Last: Manufactured for long service life when applied within its rated specifications.

Technical Specifications

• Part Number: CAH3125Y
  
• Breaker Type: Molded Case Circuit Breaker (MCCB)
  
• Frame Type: CAH
  
• Poles: 3
  
• Amperage Rating: 125A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity (A.I.C.): 22kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Line Termination: Includes Line-Side Lugs
  
• Approximate Height: 6.5 inches
  
• Shipping Weight: 4.13 lbs
  

Material Compliance and Certifications

• Industry Standards: The CAH3125Y molded case circuit breaker is manufactured to meet applicable industry standards for low-voltage power distribution equipment. Molded case circuit breakers in this class are typically designed and tested in accordance with recognized UL and ANSI requirements for safety, performance, and interrupting capacity. Proper installation in accordance with the National Electrical Code (NEC) and local regulations is required to maintain compliance.

Where It Works Best

• Commercial buildings utilizing three-phase 240VAC systems
• Industrial facilities with feeder or branch circuit protection requirements
• Equipment and distribution panels designed specifically for CAH frame breakers
• Maintenance applications requiring form, fit, and function replacement of an existing 125A, 3-pole CAH breaker