EHB3100 - 100Amp Circuit Breaker

EHB3100 - 100 Amp Circuit Breaker

If you're working with an older panel and need a breaker that fits right the first time, the EHB3100 circuit breaker is built for exactly that job. Designed for panels manufactured before 1989, this 100 amp, 3-pole breaker matches the original EHB frame specifications—so you can restore protection without reworking your setup. It uses a thermal-magnetic trip mechanism to handle both overloads and short circuits, giving you steady, dependable protection where it counts. With a 14kA interrupting rating at 480VAC and a 40°C operating standard, it’s a solid choice for keeping legacy systems running safely and efficiently. Load terminals are already included, which helps simplify installation and gets you back up and running faster.

Key Features and Benefits

• 100 Amp, 3-pole breaker for three-phase electrical systems
• Thermal-magnetic trip for consistent overload and short-circuit protection
• 14kA interrupting capacity at 480VAC
• EHB frame ensures proper fit in compatible legacy panelboards
• Non-interchangeable trip unit maintains original configuration
• Load terminals included for convenient installation
• Rated for 40°C ambient environments
• Specifically designed for panels manufactured prior to 1989

Technical Specifications

• Part Number: EHB3100
  
• Amperage: 100A
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• Interrupting Capacity: 14kA @ 480VAC
  
• Frame Type: EHB
  
• Trip Type: Thermal-Magnetic (non-interchangeable)
  
• Temperature Rating: 40°C
  
• Dimensions / Ship Weight: 6.0” height, 4.13 lbs
  
• Terminals: Load terminals included
  

Material Compliance and Certifications

• Meets applicable UL standards for molded case circuit breakers
• Manufactured using durable materials suited for electrical distribution use
• Built to provide consistent performance within rated electrical conditions

Where It Works Best

The EHB3100 is a practical fit for commercial and industrial facilities still operating with older electrical infrastructure. It’s commonly used in legacy panelboards, distribution systems, and equipment that require an exact-match replacement. When maintaining systems built before 1989, this breaker helps keep everything aligned with original specifications—no guesswork, no modifications, just a straightforward fit that does its job.