EGS3100FFB 100Amp Circuit Breaker

EGS3100FFB - 100 Amp Circuit Breaker

If you're responsible for keeping electrical systems running safely and without interruption, you know the value of a circuit breaker you can trust. The Eaton EGS3100FFB molded case circuit breaker is built for exactly that purpose—delivering dependable protection where it matters most. Designed as part of Eaton’s respected Series G lineup, this 100A, 3-pole breaker helps protect your equipment from overloads and short circuits while keeping your operation moving forward.

What makes this breaker stand out is its balance of power and practicality. It offers strong interrupting performance across multiple voltage levels, yet comes in a compact size that won’t crowd your panel. The bolt-on terminals provide a secure, stable connection, while the T186 trip unit reacts quickly and accurately when faults occur. Whether you're upgrading an existing system or planning a new installation, this breaker gives you the confidence that your electrical infrastructure is protected by proven engineering.

Key Features and Benefits

• Reliable Circuit Protection: Helps prevent damage from overloads and short circuits
• High Interrupting Ratings: Up to 85 kAIC at 240 Vac for added system safety
• Accurate Trip Response: T186 trip unit ensures consistent and timely operation
• Space-Efficient Design: Compact dimensions make installation easier in tight panels
• Secure Bolt-On Terminals: Reduces the risk of loose connections over time
• Three-Phase Capability: Ideal for commercial and industrial power distribution

Technical Specifications

• Catalog Number: EGS3100FFB
  
• Type: Molded Case Circuit Breaker (Complete Breaker)
  
• Amperage Rating: 100 Amps
  
• Voltage Rating: 600Y/347 Vac
  
• Frequency: 50/60 Hz
  
• Poles: 3
  
• Trip Type: T186
  
• Series: Series G
  
• Frame Type: EG
  
• Interrupting Capacity:
  • 85 kAIC @ 240 Vac
  • 35 kAIC @ 480 Vac
  • 22 kAIC @ 600Y/347 Vac
• Terminals: Bolt-on
  
• Dimensions: 5.5" H x 3" W x 2.99" D
  
• Weight: 2.91 lbs
  

Material Compliance and Certifications

• UL Listed for safety and performance in the U.S.
• CSA Certified for Canadian applications
• IEC Rated for global compatibility
• CE Marked to meet European standards

Where It Works Best

The Eaton EGS3100FFB is a strong fit for commercial buildings, industrial facilities, and heavy-duty electrical systems where consistent protection is critical. You’ll often find it used in panelboards, switchgear, and distribution systems powering HVAC units, manufacturing equipment, and large-scale lighting setups. If your environment demands steady performance and dependable fault protection, this breaker is right at home.