EF2B090 - 90Amp Circuit Breaker

EF2B090 - 90 Amp Circuit Breaker

If you're working with an existing electrical system and need a breaker that fits right in without second-guessing compatibility, the EF2B090 is a straightforward, reliable choice. This 2-pole, 90-amp molded case circuit breaker is designed to match EF2 frame setups, making it a practical solution for maintaining or restoring protection in commercial and industrial panels. It handles common voltage applications with confidence, offering solid interrupting capacity where it counts. Built for 40°C environments and constructed with durability in mind, this breaker does exactly what it’s supposed to do—protect your circuits and keep your system running as intended.

Key Features and Benefits

• 90 Amp Rating – Handles consistent electrical loads in a wide range of applications
• 2-Pole Design – Ideal for systems requiring dual-phase circuit protection
• Versatile A.I.C. Ratings –
  • 14k @ 600VAC
  • 14k @ 480VAC
  • 18k @ 240VAC
  Helps ensure proper protection across standard voltage configurations
• EF2 Frame Compatibility – Designed to fit seamlessly into panels built for EF2 breakers
• 40°C Ambient Rating – Suitable for typical operating environments without added complexity
• Molded Case Construction – Enclosed design supports long-term use and component protection

Technical Specifications

• Part Number: EF2B090
• Poles: 2
• Amperage: 90A
• Frame Type: EF2
• Interrupting Capacity:
  • 14k @ 600VAC
  • 14k @ 480VAC
  • 18k @ 240VAC
• Temperature Rating: 40°C
• Type: Molded Case Circuit Breaker
• Dimensions (Approx.): 6.0" height
• Weight: 3.0 lbs

Material Compliance and Certifications

• Manufactured in line with recognized electrical industry standards for molded case circuit breakers
• Uses durable insulating materials designed for consistent operation over time
• Suitable for installations requiring adherence to standard North American electrical codes (confirm specific compliance requirements for your project)

Where It Works Best

• The EF2B090 is a strong fit for maintaining existing electrical distribution systems in commercial facilities, industrial environments, and equipment panels. It’s especially useful when you need a like-for-like replacement that aligns with EF2 frame configurations and specific voltage ratings. Whether you're servicing panelboards, switchgear, or machinery, this breaker helps keep your system protected without the hassle of reconfiguring your setup.