CA3125X - 125Amp Circuit Breaker

CA3125X - 125Amp Circuit Breaker

Finding the right replacement circuit breaker often comes down to matching the details. The CA3125X is a 125 amp, 3 pole Type CA molded case circuit breaker commonly used in commercial and industrial electrical distribution equipment. If you're working with an existing Type CA installation, having the correct amperage, pole configuration, and interrupting rating is key to maintaining compatibility with the original system.

The CA3125X features a 10kA interrupting capacity at 240VAC and a non-interchangeable trip unit. It also includes load-side lugs, making it suitable for applications where that connection configuration is required. You'll often find breakers like this in panelboards, switchboards, and three-phase power distribution systems serving manufacturing facilities, warehouses, office buildings, schools, and other commercial properties.

For maintenance teams and electrical contractors, replacement projects are rarely about finding "something close." The goal is usually to find a breaker that matches the existing equipment as closely as possible. The CA3125X was built for those situations. With its established Type CA design, compact footprint, and 125A rating, it serves as a form, fit, and functional replacement for compatible installations. Built to last, it remains a practical option for keeping existing electrical systems in service without changing the original equipment configuration.

Key Features and Benefits

• 125 amp current rating
• 3-pole configuration for three-phase electrical systems
• Type CA molded case circuit breaker
• 10kA interrupting capacity at 240VAC
• Non-interchangeable trip unit
• Includes load-side lugs
• Rated for operation in ambient temperatures up to 40°C (104°F)
• Compatible with applications requiring a Type CA breaker
• Built to last for ongoing service applications
• Suitable for maintenance, repair, and replacement projects
  

Technical Specifications

• Part Number: CA3125X
  
• Type: CA
  
• Poles: 3
  
• Amperage: 125A
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Ambient Temperature Rating: 40°C (104°F)
  
• Lugs: Includes Load-Side Lugs
  
• Dimensions:
  • Width: 4.13 in.
  • Height: 6.50 in.
  • Depth: 2.69 in.
• Approximate Ship Weight: 5.75 lbs
  

Material Compliance and Certifications

This molded case circuit breaker is intended for use in electrical distribution and circuit protection applications. Compatibility, installation requirements, and code compliance should always be verified before installation. All work should be performed in accordance with applicable electrical codes, standards, and manufacturer recommendations.

Where It Works Best

The CA3125X is commonly used in:

• Commercial office buildings
• Industrial facilities
• Manufacturing plants
• Warehouses and distribution centers
• Educational institutions
• Healthcare facilities
• Panelboards
• Switchboards
• Three-phase electrical distribution systems
• Maintenance and replacement projects requiring a compatible Type CA breaker

When a project calls for a 125 amp, 3 pole Type CA circuit breaker with load-side lugs, the CA3125X offers the ratings, dimensions, and configuration needed to match compatible existing equipment.