EHB3090 - 90Amp Circuit Breaker

EHB3090 - 90 Amp Circuit Breaker

If you’re working with an older electrical panel, you already know the challenge—finding the right breaker that actually fits and performs the way the original system was designed. The EHB3090 circuit breaker takes that guesswork out of the equation. Built for EHB frame panels, particularly those manufactured before 1989, this breaker is all about proper compatibility and dependable protection where it matters most. With a 90-amp rating and a 14k A.I.C. at 480VAC, it’s well-suited for handling everyday demands in commercial and industrial environments. The thermal-magnetic design responds to both overloads and short circuits, helping protect your system without overcomplicating things. And since it features a non-interchangeable trip unit, you’re getting a configuration that stays true to the original setup—no surprises, no mismatched performance. Installation is straightforward too, thanks to included load terminals that help you get the job done efficiently. It’s a practical, no-nonsense solution built to last and keep legacy systems running the way they were intended.

Key Features and Benefits

• Designed for Legacy Compatibility – Matches EHB frame breakers used in panels manufactured before 1989
• 90 Amp Rating – Ideal for a wide range of commercial and industrial applications
• Thermal-Magnetic Protection – Helps guard against both overloads and short circuits
• 14k A.I.C. @ 480VAC – Suitable interrupting capacity for many established systems
• 3-Pole Breaker – Supports three-phase power distribution
• Fixed (Non-Interchangeable) Trip Unit – Keeps protection consistent with original system design
• Load Terminals Included – Simplifies installation and ensures secure connections
• 40°C Ambient Rating – Built for standard operating environments

Technical Specifications

• Part Number: EHB3090
  
• Amperage: 90A
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• Interrupting Capacity: 14k A.I.C. @ 480VAC
  
• Frame Type: EHB
  
• Trip Type: Thermal-Magnetic (Non-Interchangeable)
  
• Temperature Rating: 40°C
  
• Height (Shipping): 6.0 inches
  
• Weight: 4.13 lbs
  
• Terminals: Load terminals included
  

Material Compliance and Certifications

• Manufactured in line with commonly accepted industry standards for molded case circuit breakers
• Uses durable materials suited for long-term use in electrical distribution systems
• Designed for proper application within code-compliant installations when installed correctly

Where It Works Best

• Older panelboards and switchgear (pre-1989) requiring EHB frame breakers
• Commercial buildings maintaining existing electrical infrastructure
• Industrial facilities with established three-phase systems
• Service and repair projects where matching original breaker specifications is essential