ED42B045L - 45Amp Circuit Breaker

ED42B045L - 45 Amp Circuit Breaker

The ED42B045L molded case circuit breaker is designed to deliver dependable circuit protection for commercial, industrial, and institutional electrical systems. Built on the ED4 frame platform, this 45-amp, 2-pole breaker provides reliable interruption of overloads and short circuits while supporting demanding distribution environments. With an interrupting capacity of 18kA at 480VAC and 65kA at 240VAC, it helps safeguard equipment and maintain system stability in higher-fault-current applications. The breaker features Sentron-style construction, HACR rating, and line and load-side terminals included, making installation straightforward and flexible. Its reverse-feed capability adds further versatility when used in panelboards or switchboards where back-feeding is required. Designed for operation at 40°C ambient temperature, the ED42B045L is a practical choice for professionals who need consistent protection and dependable performance in modern electrical distribution systems.

Key Features and Benefits

• 45 Amp Continuous Protection – Provides stable overload and short-circuit protection for branch circuits and distribution panels.
• 2-Pole Configuration – Ideal for protecting 240V circuits and multi-phase electrical systems.
• High Interrupting Capacity – Rated 18kA at 480VAC and 65kA at 240VAC, helping protect equipment in high fault current environments.
• ED4 Frame Design – Built for compatibility with panelboards and distribution equipment designed for ED-frame breakers.
• HACR Rated – Suitable for heating, air conditioning, and refrigeration applications.
• Reverse Feed Capable – Allows flexible installation options where back-feeding may be required.
• Included Line and Load Terminals – Simplifies installation and reduces additional component requirements.
• 40°C Ambient Rating – Designed to perform reliably under standard electrical equipment operating conditions.

Technical Specifications

• Part Number: ED42B045L
  
• Amperage Rating: 45 Amps
  
• Number of Poles: 2
  
• Frame Type: ED4
  
• Interrupting Rating:
  • 18kA @ 480VAC
  • 65kA @ 240VAC
• Temperature Rating: 40°C
  
• Breaker Type: Sentron Style Molded Case Circuit Breaker
  
• Terminal Configuration: Line and Load Side Terminals Included
  
• Reverse Feed: Suitable
  
• Ship Weight: 2.0 lbs
  
• Approximate Height: 6.35 in.
  

Material Compliance and Certifications

• Industry Standards: The ED42B045L circuit breaker is manufactured to meet recognized industry performance and safety standards for molded case circuit breakers used in commercial and industrial power distribution systems.
• HACR Rating: Its HACR rating confirms suitability for HVAC equipment protection where motor loads and compressor systems are present.
• Engineered Construction: Components and construction are engineered to support safe operation within electrical distribution equipment designed for ED-frame breakers.
  

Where It Works Best

• Commercial electrical distribution panels
• Industrial control panels and machinery circuits
• HVAC and refrigeration equipment (HACR applications)
• Lighting and power distribution systems
• Panelboards and switchboards requiring ED-frame breakers
• Facilities where reverse-feed installation is needed