EB3090L - 90Amp Circuit Breaker

EB3090L - 90Amp Circuit Breaker

When you're maintaining an older electrical distribution system, finding the right replacement breaker isn't just about matching the amp rating—it's about ensuring compatibility with the equipment already in service. The EB3090L 90 Amp 3-Pole Type EB Circuit Breaker was designed for use in compatible Type EB panelboards manufactured before 1989, making it a practical choice for facilities that continue to rely on proven electrical infrastructure.

Built with a thermal-magnetic trip mechanism, the EB3090L helps protect electrical systems from overloads and short circuits while maintaining the original operating characteristics expected in approved Type EB applications. With a 90-amp rating, 3-pole design, and 10kA interrupting capacity at 240VAC, this breaker is commonly found in commercial buildings, industrial facilities, schools, municipal properties, and other locations where legacy power distribution equipment remains in service.

Key Features and Benefits

• Designed for use in compatible Type EB panelboards manufactured before 1989
• 90 amp rating for branch and feeder circuit protection
• 3-pole configuration for three-phase electrical distribution systems
• Thermal-magnetic trip mechanism helps protect against overloads and short circuits
• Non-interchangeable trip unit supports original equipment compatibility
• Includes both line and load terminals
• 10kA interrupting capacity at 240VAC
• Rated for operation in ambient temperatures up to 40°C (104°F)
• Helps maintain existing electrical infrastructure without modification to compatible equipment
• Form, fit, and functional replacement for approved Type EB applications
• Built to last in properly maintained electrical systems

Technical Specifications

• Part Number: EB3090L
  
• Type: EB
  
• Amperage: 90 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA A.I.C. @ 240VAC
  
• Trip Mechanism: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C (104°F)
  
• Terminals: Line and Load Terminals Included
  
• Width: 4.13 in.
  
• Height: 6.0 in.
  
• Depth: 3.38 in.
  
• Dimensions: 4.13"W × 6.0"H × 3.38"D
  
• Approximate Shipping Weight: 5.50 lbs.
  

Material Compliance and Certifications

The EB3090L is intended for installation in compatible electrical distribution equipment designed to accept Type EB circuit breakers. Installation should be performed by qualified electrical personnel and in accordance with applicable electrical codes, manufacturer requirements, equipment labeling, and site-specific safety procedures. Compatibility with the existing panelboard, voltage requirements, and system specifications should always be verified prior to installation.

Where It Works Best

The EB3090L is commonly used in the maintenance and servicing of compatible legacy electrical systems, including:

• Commercial office buildings
• Manufacturing and industrial facilities
• Educational institutions and campus buildings
• Government and municipal properties
• Healthcare and institutional facilities
• Maintenance projects involving compatible pre-1989 Type EB panelboards
• Three-phase power distribution systems requiring 90 amp circuit protection
• Existing electrical infrastructure where maintaining original equipment specifications is important
• Repair and replacement projects involving legacy electrical distribution equipment