EF2B100 - 100Amp Circuit Breaker

EF2B100 - 100 Amp Circuit Breaker

If you’re maintaining an existing electrical system and need a breaker that fits right the first time, the EF2B100 is a straightforward, reliable choice. Built for compatibility with EF2 frame equipment, this 2-pole, 100-amp molded case circuit breaker is designed to handle everyday power distribution demands without complication. It installs cleanly into matching panels and helps keep your system protected from overloads and short circuits—exactly what you expect from a breaker that’s made to last.

What makes this unit especially practical is how it balances size, capacity, and application flexibility. Whether you're working in a commercial facility or an industrial setup, the EF2B100 gives you the correct ratings and configuration to maintain safe, consistent operation. No guesswork—just a breaker that does its job and fits where it’s supposed to.

Key Features and Benefits

• 100 Amp rating: supports a wide range of standard electrical loads
• 2-pole design: provides dependable protection for dual-phase circuits
• Interrupting capacity rated at:
  • 14kA @ 600VAC
  • 14kA @ 480VAC
  • 18kA @ 240VAC
• EF2 frame: ensures proper fit in compatible panels and switchgear
• Molded case enclosure: helps shield internal components from environmental factors
• Rated for 40°C operation: suitable for typical indoor electrical environments
• Built to last: making it a practical solution for ongoing system maintenance

Technical Specifications

• Part Number: EF2B100
• Poles: 2
• Amperes: 100A
• Frame Type: EF2
• A.I.C. Rating:
  • 14kA @ 600VAC
  • 14kA @ 480VAC
  • 18kA @ 240VAC
• Operating Temperature Rating: 40°C
• Breaker Type: Molded Case Circuit Breaker
• Approx. Dimensions / Ship Weight: 6.0" height, 3.0 lbs

Material Compliance and Certifications

• Manufactured to meet established industry standards for molded case circuit breakers
• Designed for use in systems that follow recognized electrical safety codes
• Suitable for applications requiring compliant overcurrent protection (confirm with local code requirements)

Where It Works Best

• The EF2B100 fits naturally into commercial and industrial environments where EF2 frame breakers are already in place. It’s commonly used in panelboards and distribution systems that call for a 2-pole, 100-amp configuration with defined interrupting ratings. If you’re replacing an existing unit or maintaining a legacy system, this breaker delivers the form, fit, and function needed to keep everything running as intended—without unnecessary adjustments or modifications.