JB3090W - 90A Circuit Breaker

JB3090W - 90A Circuit Breaker

Older electrical equipment can be particular about which replacement breakers to use. The amperage may be right, but the part still needs the correct pole count, trip style, interrupting rating, physical size, and terminal setup. The JB3090W is a 90A, 3-pole Type JB circuit breaker with a thermal-magnetic, non-interchangeable trip unit. That makes terminal compatibility one of the items to check when replacing your existing breaker. For legacy equipment requiring this exact Type JB setup, it provides the ratings and physical specifications needed to verify form, fit, and function.

Key Features and Benefits

• 90-amp rating: For equipment requiring a 90A circuit breaker.
• Three poles: Matches applications calling for a 3-pole arrangement.
• Type JB: An essential detail when identifying a compatible replacement for existing equipment.
• Thermal-magnetic trip: Uses the specified thermal-magnetic operating design.
• Non-interchangeable trip unit: The trip unit is not intended to be exchanged for another.
• No terminals included: An important distinction when planning installation and checking terminal requirements.
  

Technical Specifications

• Part Number: JB3090W
  
• Type: JB
  
• Amperage: 90 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
  
• Trip Type: 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

No specific UL, CSA, IEC, RoHS, REACH, or other certification or material compliance information was provided in the available JB3090W specifications. Rather than assuming certification based on the breaker type or ratings, any required listing or compliance status should be verified against the product markings or applicable manufacturer documentation.

Where It Works Best

The JB3090W is intended for situations where existing or legacy electrical equipment calls for a 90A, 3-pole Type JB circuit breaker with the same electrical and physical characteristics. It can be especially useful in replacement work where keeping the required form, fit, and function is the priority rather than changing the equipment configuration.