JB3100 - 100Amp Circuit Breaker

JB3100 - 100Amp Circuit Breaker

Replacing a breaker in older electrical equipment often comes down to getting several details right at once. Amperage is important, but so are the pole count, trip configuration, interrupting rating, terminal arrangement, and physical size. The JB3100 is a 100A, 3-pole Type JB circuit breaker with thermal-magnetic operation and a non-interchangeable trip unit. It measures 4.13"W x 10.00" L x 4.13"D, giving you the dimensional information needed before installation. For legacy equipment that specifically calls for these characteristics, the JB3100 provides the form, fit, and functional specifications needed for an accurate replacement decision.

Key Features and Benefits

• 100A rating: Suitable where the existing equipment specifically requires a 100-amp circuit breaker.
• 3-pole design: Provides the required three-pole arrangement for compatible installations.
• Type JB: A key identifier when matching the breaker to existing or legacy electrical equipment.
• Thermal-magnetic operation: Uses the specified thermal-magnetic trip design.
• Non-interchangeable trip unit: Maintains the trip configuration specified for this breaker.
• Load-side terminals included: Helps simplify identification of the correct terminal configuration when replacing an existing unit.
  

Technical Specifications

• Part Number: JB3100
  
• Type: JB
  
• Amperage: 100 A
  
• Number of 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

No specific UL, CSA, IEC, RoHS, REACH, or other certification or material-compliance information was included in the supplied specifications for the JB3100. A certification should not be assumed based solely on the Type JB designation, voltage ratings, or interrupting capacities.

Where It Works Best

The JB3100 100A circuit breaker is best considered for compatible existing and legacy electrical equipment that specifically requires a 3-pole Type JB breaker with thermal-magnetic operation, a non-interchangeable trip unit, and the stated voltage and interrupting ratings. Because load-side terminals are included, the terminal arrangement should also be compared with that of the breaker being replaced.