EB3090 - 90Amp Circuit Breaker

EB3090 - 90 Amp Circuit Breaker

The EB3090 circuit breaker is a 3-pole, 90-amp thermal-magnetic circuit breaker designed for use in electrical distribution systems that utilize EB-frame breakers manufactured for panelboards produced prior to 1989. Built to provide dependable overcurrent and short-circuit protection, this breaker helps maintain safe operation in commercial and industrial electrical panels where compatibility with legacy equipment is essential. With a 10k A.I.C. interrupting rating at 240VAC, the EB3090 is engineered to safely interrupt fault conditions while supporting stable operation under normal electrical loads.

This model features a non-interchangeable trip unit and is rated for operation at 40°C, making it suitable for a wide range of indoor electrical distribution environments. The breaker includes load terminals, simplifying installation within compatible panels. Designed for long service life, EB-frame breakers like the EB3090 continue to be relied upon in facilities where maintaining existing panel configurations is necessary. When maintaining or servicing older electrical distribution systems, selecting the correct frame type and rating ensures proper form, fit, and function.

Key Features and Benefits

• 90 Amp current rating: suitable for protecting branch circuits and distribution feeders
• 3-pole configuration: for three-phase electrical systems
• Thermal-magnetic trip mechanism: provides protection against both overload and short-circuit conditions
• 10k A.I.C. interrupting capacity at 240VAC: for safe fault interruption
• Non-interchangeable trip unit: designed specifically for the EB frame
• Includes load terminals: for straightforward installation
• 40°C ambient temperature rating: for typical electrical room conditions
• Designed for panelboards manufactured before 1989: that require EB-frame breakers
• Built to last: suited for long-term service in maintained legacy electrical systems

Technical Specifications

• Part Number: EB3090
  
• Frame Type: EB
  
• Poles: 3
  
• Amperage Rating: 90A
  
• Voltage Rating: 240VAC
  
• Interrupting Rating (A.I.C.): 10kA @ 240VAC
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Load Terminals: Included
  
• Approximate Shipping Weight: 4.13 lbs
  
• Shipping Height: 6.0 in
  

Material Compliance and Certifications

• Industry Standards: The EB3090 circuit breaker is manufactured to meet applicable electrical industry standards for molded case circuit breakers used in low-voltage distribution systems.
• Safe Operation: Components are designed for safe operation within rated electrical and environmental limits when installed in compatible equipment and maintained according to accepted electrical practices.

Where It Works Best

• The EB3090 is commonly used in commercial buildings, industrial facilities, and institutional electrical systems that rely on panelboards manufactured prior to 1989 using EB-frame breakers. It is well suited for maintenance and repair projects where maintaining the original panel configuration is required. Typical applications include three-phase distribution panels, equipment protection circuits, and feeder circuits within legacy electrical infrastructure.