JB3090 - 90A Circuit Breaker

JB3090 - 90A Circuit Breaker

When you're replacing a breaker in older electrical equipment, amperage is only part of the picture. The physical size, pole count, trip unit, terminal arrangement, and interrupting ratings all need to line up. The JB3090 is a 90-amp, 3-pole Type JB circuit breaker with thermal-magnetic operation and a non-interchangeable trip unit. For compatible legacy equipment that requires these specifications, the JB3090 provides a clearly defined form, fit, and function replacement option. These products are built to last, but proper selection still depends on confirming all relevant ratings and physical requirements before installation.

Key Features and Benefits

• 90A rating: Provides the specified 90-amp configuration for compatible equipment.
• 3-pole design: Matches installations requiring three poles rather than relying on amperage alone to identify the correct breaker.
• Type JB: An important compatibility detail when replacing a breaker in existing or legacy electrical equipment.
• Thermal-magnetic operation: Uses the specified thermal-magnetic trip design.
• Non-interchangeable trip unit: Keeps the trip configuration clearly defined when comparing the JB3090 with the existing breaker.
• Load-side terminals included: The supplied terminal arrangement is known in advance, helping with replacement planning.
  

Technical Specifications

• Part Number: JB3090
  
• Type: JB
  
• Amperage: 90 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
  
• 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 material compliance or certification information was provided for the JB3090. These certifications should therefore not be assumed from its Type JB designation or electrical ratings.

Where It Works Best

The JB3090 90A 3-pole circuit breaker is intended for compatible existing and legacy equipment where the required replacement calls for a Type JB breaker with the same electrical and physical characteristics. Its 90A rating is important, but so are the three-pole arrangement, thermal-magnetic operation, non-interchangeable trip unit, load-side terminals, and physical dimensions.