EHB3020 - 20Amp Circuit Breaker

EHB3020 - 20 Amp Circuit Breaker

If you’re working with older electrical equipment, you already know how important it is to find a breaker that actually fits—and works the way the original system was designed to. The EHB3020 circuit breaker is built specifically for that purpose. Designed for EHB frame panelboards manufactured before 1989, this breaker helps you maintain system integrity without guesswork or modification.

It features a thermal-magnetic trip mechanism, which means it responds intelligently to both overloads (with a slight delay) and short circuits (instantly). That balance helps protect your equipment while keeping operations running smoothly. With a 3-pole design and a 20-amp rating, it’s well-suited for three-phase applications commonly found in commercial and industrial environments. And because it includes load terminals, installation is more straightforward—no extra sourcing needed.

Key Features and Benefits

• Designed to match legacy EHB frame panelboards (pre-1989 systems)
• Thermal-magnetic trip unit for dependable overload and short-circuit protection
• 3-pole configuration for three-phase power distribution
• 20 amp capacity for branch circuit applications
• 14kA interrupting rating at 480VAC to manage fault conditions
• Non-interchangeable trip unit keeps settings consistent and secure
• Load terminals included to simplify installation
• Built to last and hold up in demanding electrical environments

Technical Specifications

• Part Number: EHB3020
  
• Amperage: 20A
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• Interrupting Capacity: 14kA @ 480VAC
  
• Frame Type: EHB
  
• Trip Type: Thermal-Magnetic (Non-Interchangeable)
  
• Temperature Rating: 40°C
  
• Dimensions / Shipping Weight:
  • Height: 6.0 in
  • Weight: 4.13 lbs

Material Compliance and Certifications

• Produced in accordance with applicable industry standards for molded case circuit breakers
• Intended for use in systems aligned with UL-listed equipment (always confirm panel compatibility)
• Built with materials suitable for long-term use in electrical distribution systems

Where It Works Best

• The EHB3020 is a practical choice when you’re maintaining or repairing existing electrical infrastructure. It fits right into:
• Commercial buildings with original panel installations
• Industrial facilities running legacy distribution systems
• Service and maintenance projects where form, fit, and function must match the original equipment

When the goal is to keep an existing system running safely and efficiently, having the right breaker makes all the difference. This one is designed to do exactly that—no adjustments, no compromises.