ED43B045 - 45Amp Circuit Breaker

ED43B045 - 45 Amp Circuit Breaker

The ED43B045 45A 3-pole circuit breaker is built to deliver dependable overcurrent protection for commercial and industrial electrical systems. Designed on the ED4 frame platform, this Sentron-style molded case circuit breaker helps protect equipment and distribution systems from overloads and short circuits while maintaining consistent electrical performance. With an interrupting capacity of 18kA at 480VAC and 65kA at 240VAC, it is well-suited for demanding applications where system protection is critical. This breaker features a bolt-on mounting design, allowing it to fasten securely to compatible panelboards and switchboards. Installation is straightforward thanks to the included load-side terminals, helping electricians complete connections efficiently during maintenance or new installations. Rated for 40°C environments and HACR applications, the ED43B045 is commonly used in HVAC systems and other equipment requiring reliable circuit protection. The unit is also suitable for reverse feed, providing additional flexibility when configuring electrical distribution layouts.

Key Features and Benefits

• 45 Amp Rated Protection: Provides dependable protection against overload and short-circuit conditions.
• 3-Pole Configuration: Designed for three-phase electrical systems found in commercial and industrial facilities.
• High Interrupting Capacity: Rated 18kA at 480VAC and 65kA at 240VAC for reliable fault protection.
• Bolt-On Installation: Secures directly to compatible electrical panelboards for a stable connection.
• ED4 Frame Compatibility: Built for systems designed for ED-frame molded case breakers.
• HACR Rated: Suitable for heating, air conditioning, and refrigeration equipment circuits.
• Reverse Feed Capable: Offers flexibility in power distribution configurations.
• Load-Side Terminals Included: Helps simplify installation and wiring.

Technical Specifications

• Part Number: ED43B045
  
• Amperage Rating: 45 Amps
  
• Poles: 3
  
• Frame Type: ED4
  
• Interrupting Rating:
  • 18kA @ 480VAC
  • 65kA @ 240VAC
• Mounting Type: Bolt-On
  
• Operating Temperature: 40°C
  
• HACR Rated: Yes
  
• Reverse Feed: Suitable
  
• Approximate Height: 6.35 in
  
• Shipping Weight: 3.0 lbs
  
• Terminals: Load-side terminals included
  
• Breaker Type: Sentron Style Molded Case Circuit Breaker
  

Material Compliance and Certifications

• Industry Standards: The ED43B045 circuit breaker is produced to meet established electrical industry safety and performance standards commonly applied to molded case circuit breakers used in commercial and industrial distribution systems.
• UL and CSA Standards: Equipment in this category is typically designed and tested to comply with UL and CSA electrical protection standards, supporting safe integration into approved electrical installations when installed according to applicable electrical codes.
  

Where It Works Best

• Commercial panelboards and switchboards
• Industrial machinery and control panels
• HVAC and refrigeration systems
• Manufacturing facilities
• Office buildings and retail power distribution systems