EHB3100L - 100Amp Circuit Breaker

EHB3100L - 100 Amp Circuit Breaker

If you’re working with an older panel and need a breaker that actually fits the way it should, the EHB3100L is built for exactly that purpose. Designed for panelboards manufactured before 1989, this 3-pole, 100-amp circuit breaker helps you maintain your existing electrical system without the headaches of mismatched components. It delivers dependable thermal-magnetic protection—handling both overloads and short circuits—while staying true to the original design of your equipment. With line and load terminals included and a fixed (non-interchangeable) trip unit, installation is straightforward and consistent with what your system was built around. It’s a practical, no-nonsense solution for keeping legacy systems running safely and smoothly.

Key Features and Benefits

• Made for Legacy Compatibility – Specifically designed for pre-1989 panelboards, so you get the right fit without guesswork
• Thermal-Magnetic Protection – Responds to both prolonged overloads and instant short circuits to protect your system
• 3-Pole Design – Ideal for three-phase power distribution in commercial and industrial environments
• 100 Amp Capacity – Handles moderate electrical loads with steady performance
• Line & Load Terminals Included – Helps reduce install time and ensures proper connections
• Fixed Trip Unit – Keeps protection settings consistent with original equipment design
• Built to Last – Designed for long-term use in real-world electrical conditions

Technical Specifications

• Part Number: EHB3100L
  
• Poles: 3
  
• Amperage: 100A
  
• Voltage Rating: 480VAC
  
• Interrupting Capacity: 14kA @ 480VAC
  
• Frame Type: EHB
  
• Trip Type: Thermal-Magnetic (Non-Interchangeable)
  
• Temperature Rating: 40°C
  
• Terminals: Line and Load Included
  
• Dimensions / Shipping: Height 6.0 in, Weight 4.13 lbs
  

Material Compliance and Certifications

• Meets applicable industry standards for molded case circuit breakers
• Suitable for installations aligned with NEC (National Electrical Code) requirements
• Manufactured using materials appropriate for standard commercial and industrial electrical environments

Where It Works Best

The EHB3100L is a smart choice for maintaining and servicing older electrical systems in commercial buildings, industrial facilities, and institutional properties. If you’re dealing with legacy panelboards and need a breaker that matches the original setup, this unit helps keep everything operating as intended—without unnecessary modifications. It’s especially useful for electricians and maintenance teams focused on preserving system integrity while ensuring safe, reliable protection.