JB3150 - 150Amp Circuit Breaker

JB3150 - 150Amp Circuit Breaker

When you're replacing a breaker in older equipment, the small details matter. A 150-amp rating alone isn't enough—the breaker type, pole count, trip unit, terminals, interrupting rating, and physical size all need to align with the existing setup. The JB3150 is a 150A, 3-pole Type JB circuit breaker with thermal-magnetic operation and a non-interchangeable trip unit. That gives you several important compatibility points to check before installation. For existing or legacy equipment that calls for this particular Type JB setup, it's a practical form, fit, and function replacement option.

Key Features and Benefits

• 150-amp, 3-pole configuration for equipment requiring these specific electrical characteristics.
• Type JB breaker for matching compatible existing and legacy installations.
• Uses thermal-magnetic operation with a non-interchangeable trip unit.
• Load-side terminals are included, an important detail to verify when replacing an existing breaker.
• 40°C rated according to the supplied specifications.
  

Technical Specifications

• Part Number: JB3150
  
• 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: Load-Side Terminals 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 details were not provided for the JB3150. No certification should be assumed from the Type JB designation or the breaker's electrical ratings alone.

Where It Works Best

The JB3150 is intended for compatible existing and legacy electrical equipment that calls for a 150A, 3-pole Type JB circuit breaker with thermal-magnetic operation and a non-interchangeable trip unit. It's especially important to check the included load-side terminals and physical dimensions when you're replacing a breaker already installed in older equipment.