EB3090L - 90Amp Circuit Breaker

EB3090L - 90 Amp Circuit Breaker

The EB3090L circuit breaker is a 3-pole, 90-amp thermal-magnetic breaker designed for use in electrical distribution systems requiring dependable overcurrent protection in legacy panel installations manufactured before 1989. Built on the EB frame, this breaker provides consistent protection against both overloads and short circuits through a non-interchangeable trip unit engineered for stable operation in standard electrical environments. Rated for 10kA interrupting capacity at 240VAC and 40°C operating conditions, the EB3090L helps maintain proper circuit protection while preserving compatibility with existing equipment. Line and load terminals are included, allowing for straightforward installation in the appropriate panel configuration. With its solid construction and dependable design, this breaker supports long service life in properly maintained electrical systems.

Key Features and Benefits

• 90 Amp Rating – Designed to provide reliable overcurrent protection for circuits requiring a 90A capacity.
• 3-Pole Configuration – Suitable for protecting three-phase electrical circuits commonly used in commercial and industrial environments.
• Thermal-Magnetic Trip Mechanism – Combines thermal protection for overload conditions with magnetic protection for short circuits.
• 10kA Interrupting Capacity at 240VAC – Engineered to safely interrupt fault currents up to 10,000 amperes.
• Non-Interchangeable Trip Unit – Factory-calibrated trip system designed specifically for this breaker frame.
• 40°C Rated Operation – Designed for standard operating conditions found in many electrical installations.
• Line and Load Terminals Included – Helps simplify installation and replacement in compatible equipment.
• Form, Fit, and Functional Compatibility – Designed for use in electrical panels manufactured prior to 1989 that require EB-frame breakers.
• Durable Construction – Electrical components are built to last when used within their rated specifications.

Technical Specifications

• Part Number: EB3090L
  
• Amperage Rating: 90 Amps
  
• Poles: 3
  
• Interrupting Rating: 10kA @ 240VAC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Frame Type: EB
  
• Operating Temperature Rating: 40°C
  
• Included Terminals: Line and Load
  
• Designed For: Panel systems manufactured before 1989
  
• Approximate Shipping Weight: 4.13 lbs
  
• Approximate Shipping Height: 6.0 inches
  

Material Compliance and Certifications

• Industry Standards: The EB3090L circuit breaker is manufactured to meet applicable electrical industry standards for molded case circuit breakers used in low-voltage distribution systems.
• Manufacturing Practices: Materials and construction follow commonly accepted electrical manufacturing practices designed to support safe operation within the breaker’s listed ratings when installed and maintained according to applicable electrical codes and equipment specifications.

Where It Works Best

• The EB3090L 3-pole 90A circuit breaker is commonly used in electrical distribution systems that rely on EB-frame breakers installed in panelboards manufactured before 1989. It is well suited for:
• Commercial building electrical panels
• Industrial facilities with legacy electrical distribution equipment
• Maintenance and repair of existing power distribution systems
• Replacement applications requiring EB-frame compatibility
• Three-phase circuits requiring 90-amp protection

Its design focuses on form, fit, and functional replacement, helping maintain continuity in electrical systems that depend on EB-frame breakers while meeting the specified electrical ratings for the installation.