JB3150W - 150Amp Circuit Breaker

JB3150W - 150Amp Circuit Breaker

When you're replacing a breaker in existing equipment, the amp rating is only part of the story. The physical size, pole count, trip-unit design, voltage-specific interrupting capacity, and terminal setup all have to line up. The JB3150W is a 150A, 3-pole Type JB circuit breaker with thermal-magnetic operation and a non-interchangeable trip unit. For existing or legacy equipment that calls for these specifications, this breaker offers the form, fit, and function needed to replace a matching unit.

Key Features and Benefits

• 150A, 3-pole configuration for installations requiring these specific electrical characteristics.
• Type JB design helps narrow down compatibility when replacing an existing breaker.
• Thermal-magnetic operation matches the stated JB3150W design.
• Equipped with a non-interchangeable trip unit.
• 40°C, rated per the available product specifications.
• Terminals are not included, so the correct terminal requirements should be established before installation.
  

Technical Specifications

• Part Number: JB3150W
  
• Type: JB
  
• Amperage: 150 A
  
• Poles: 3
  
• A.I.C. Rating at 600VAC: 14k
  
• A.I.C. Rating at 480VAC: 22k
  
• A.I.C. Rating at 240VAC: 25k
  
• Interrupting Capacity at 600VAC: 14,000 A
  
• Interrupting Capacity at 480VAC: 22,000 A
  
• Interrupting Capacity at 240VAC: 25,000 A
  
• Operation: Thermal Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Terminals: Not Included
  
• Width: 4.13 in.
  
• Height / Length: 10.00 in.
  
• Depth: 4.13 in.
  
• Overall Dimensions: 4.13"W x 10.00"L x 4.13"D
  
• Approximate Ship Weight: 14.00 lb.
  

Material Compliance and Certifications

Specific UL, CSA, IEC, RoHS, REACH, or other certification and material-compliance information was not included in the available specifications for the JB3150W. The Type JB designation and electrical ratings should not be treated as proof of any particular certification.

Where It Works Best

The JB3150W is best considered when maintaining compatible existing or legacy electrical equipment that specifically requires a 150A, 3-pole Type JB thermal-magnetic circuit breaker. It is particularly important to match the interrupting rating to the system voltage rather than relying on amperage alone.