ED43B090 - 90Amp Circuit Breaker

ED43B090 - 90 Amp Circuit Breaker

The ED43B090 molded case circuit breaker provides dependable overcurrent protection for three-phase electrical systems used in commercial and light industrial environments. Rated at 90 amps and built on the ED4 frame, this breaker is designed to handle demanding electrical loads while helping protect panelboards, equipment, and wiring from damage caused by overloads or short circuits. With interrupting ratings of 18kA at 480VAC and 65kA at 240VAC, it is capable of clearing high fault currents that can occur in modern electrical distribution systems.

This Sentron-style bolt-on circuit breaker installs securely into compatible panelboards and includes load-side terminals, making wiring more straightforward during installation or replacement projects. The unit is HACR rated, which means it is suitable for heating, air-conditioning, and refrigeration equipment. It is also approved for reverse feed applications, giving electricians additional flexibility when configuring a system. Designed for operation in environments up to 40°C, the ED43B090 is a practical choice for facility maintenance teams, contractors, and electrical professionals who need reliable protection in everyday applications.

Key Features and Benefits

• 90 Amp rating: suitable for many commercial and industrial branch circuits
• 3-pole configuration: designed for three-phase electrical systems
• High interrupting capacity:
  • 18kA at 480VAC
  • 65kA at 240VAC
• Bolt-on mounting: helps ensure a secure connection within compatible panelboards
• HACR rated: for HVAC and refrigeration equipment applications
• Sentron style molded case design: with thermal-magnetic protection
• Load-side terminals included: to simplify installation
• Reverse feed capable: for flexible system configurations
• Designed for operation at 40°C ambient temperature

Technical Specifications

• Part Number: ED43B090
  
• Frame Type: ED4
  
• Circuit Breaker Type: Sentron Style Molded Case Circuit Breaker
  
• Poles: 3
  
• Amperage Rating: 90 Amps
  
• Interrupting Capacity:
  • 18kA @ 480VAC
  • 65kA @ 240VAC
• Mounting Style: Bolt-On
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Reverse Feed: Suitable
  
• Terminals: Load-side terminals included
  
• Approximate Shipping Weight: 3 lbs
  
• Approximate Height: 6.35 in
  

Material Compliance and Certifications

• UL Safety Standards: The ED43B090 molded case circuit breaker is manufactured to meet widely recognized UL safety standards for circuit protection devices used in North American electrical systems.
• HACR Rating: Its HACR rating confirms suitability for HVAC equipment protection when installed in accordance with local electrical codes and proper installation practices.

Where It Works Best

• Commercial building panelboards
• HVAC and refrigeration equipment circuits
• Manufacturing and processing equipment
• Facility electrical maintenance and repairs
• Replacement breakers for compatible ED4 frame panel systems