EGB3100FFB - 100Amp Circuit Breaker

EGB3100FFB - 100 Amp Circuit Breaker

When you're working with a three-phase electrical system, you don’t want to second-guess your protection. The Eaton EGB3100FFB is built for that peace of mind. This 100-amp molded case circuit breaker is part of Eaton’s well-known Series G lineup, and it’s designed to do one job extremely well—protect your system from overloads and short circuits without unnecessary trips or failures. What stands out here is consistency. The thermal-magnetic trip unit reacts the way you expect it to, especially in real-world conditions where loads fluctuate. It’s also rated for higher fault interrupting capacity, so it can handle demanding environments without becoming a weak point in your setup. The compact size makes it easier to work into tighter panels, and the bolt-on connection gives you a solid, no-nonsense installation that stays secure over time. If you’ve dealt with unreliable breakers before, this is the kind of upgrade you notice immediately.

Key Features and Benefits

• Steady, Predictable Protection: Thermal-magnetic (T186) trip unit helps prevent overloads and short circuits without nuisance tripping
• Strong Interrupting Capacity: Handles up to 18 kAIC at 480 Vac and 25 kAIC at 240 Vac
• Compact Build: Fits more easily into panelboards and switchboards with limited space
• Three-Pole Design: Ideal for protecting three-phase electrical systems
• Bolt-On Mounting: Creates a tight, reliable connection that holds up over time
• Series G Reliability: A widely used Eaton platform known for dependable performance

Technical Specifications

• Catalog Number: EGB3100FFB
  
• Product Type: Molded Case Circuit Breaker (Complete Breaker)
  
• Amperage Rating: 100 A
  
• Voltage Rating: 600Y/347 Vac
  
• Frequency Rating: 50/60 Hz
  
• Number of Poles: 3
  
• Trip Type: T186
  
• Interrupt Rating:
  • 18 kAIC at 480 Vac
  • 25 kAIC at 240 Vac
• Frame Type: EG
  
• Series: Series G
  
• Mounting Type: Bolt-on
  
• Dimensions: 2.99 in (D) x 3 in (W) x 5.5 in (H)
  
• Weight: 2.91 lb
  

Material Compliance and Certifications

• UL Listed: for safety in U.S. applications
• CSA Certified: for use in Canada
• IEC Rated: for international compatibility
• CE Marked: to meet European standards

Where It Works Best

• You’ll typically see the EGB3100FFB in commercial buildings, industrial facilities, and equipment panels where steady three-phase protection is critical. It’s a practical fit for panelboards, switchboards, and distribution systems that run under load every day and can’t afford unexpected interruptions. Whether you're replacing a worn unit or building out a new system, it’s a straightforward, dependable choice that gets the job done without complications.