CAH3150W - 150Amp Circuit Breaker

CAH3150W - 150 Amp Circuit Breaker

The CAH3150W is a 150 amp, 3-pole molded case circuit breaker built on the CAH frame platform for use in commercial and industrial power distribution systems rated up to 240VAC. With an interrupting capacity of 22kA at 240 volts AC, it is designed to provide overcurrent protection where proper short-circuit ratings are required by code and system design. This breaker uses a non-interchangeable trip unit calibrated at 40°C, meaning the trip characteristics are factory set and not field adjustable. It is commonly installed in three-phase panelboards and switchgear that were originally designed for CAH frame breakers. The unit ships without lugs installed, allowing contractors to select lugs that match conductor size and jobsite requirements. For facilities maintaining existing electrical infrastructure, the CAH3150W serves as a direct form, fit, and function replacement when the original specifications call for a 150A, 3-pole CAH frame breaker. The molded case housing and internal components are built for long-term service in demanding environments.

Key Features and Benefits

• 150 amp current rating
• 3 pole configuration for three-phase applications
• 22kA interrupting rating at 240VAC
• Designed for CAH frame compatibility
• Non-interchangeable, factory-set trip unit
• Calibrated at 40°C ambient temperature
• No lugs included (field-installed as needed)
• Durable molded case construction

Technical Specifications

• Part Number: CAH3150W
  
• Frame Type: CAH
  
• Amperage Rating: 150 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 22kA @ 240VAC
  
• Trip Unit: Non-Interchangeable
  
• Calibration: 40°C
  
• Lugs: Not Included
  
• Shipping Weight: 4.13 lbs
  
• Shipping Height: 6.5 inches
  

Material Compliance and Certifications

• The CAH3150W is manufactured to meet applicable UL and ANSI standards for molded case circuit breakers. When installed in properly rated equipment, it supports NEC requirements for branch and feeder circuit protection. Always confirm panel compatibility, voltage rating, and interrupting capacity before installation to ensure code compliance.

Where It Works Best

• Commercial panelboards utilizing CAH frame breakers
• Industrial facilities operating at 240VAC
• Three-phase feeder and branch circuits
• Service replacements in legacy distribution equipment
• Applications requiring a 150 amp, 3-pole breaker with a 22kA rating