ED63B045 - 45Amp Circuit Breaker

ED63B045 - 45 Amp Circuit Breaker

If you’re working with a three-phase system and need dependable circuit protection, the ED63B045 is a solid, no-nonsense option. This 45-amp, 3-pole molded case circuit breaker is part of the ED6 frame family and is commonly used in commercial and light industrial setups where reliability matters more than anything flashy. It’s built to handle real-world electrical demands, with interrupting ratings up to 65kA at 240VAC, giving you confidence that it can respond quickly if a fault occurs. The bolt-on design keeps installation secure, and the included load-side terminals help speed things up when you’re wiring it in. It’s also HACR rated, so it’s right at home in HVAC and refrigeration applications.

Key Features and Benefits

• 45 amp rating suited for a wide range of commercial and industrial circuits
• 3-pole design for balanced three-phase power distribution
• High interrupting capacity for added protection during fault conditions
• Bolt-on mounting for a firm, stable installation
• Includes load-side terminals to simplify setup
• HACR rated for use with HVAC and refrigeration equipment
• Can be used in reverse feed applications when needed
• Designed for operation in 40°C ambient environments

Technical Specifications

• Part Number: ED63B045
  
• Amperage: 45A
  
• Poles: 3
  
• Frame Type: ED6
  
• Interrupting Capacity:
  • 18kA @ 600VAC
  • 25kA @ 480VAC
  • 65kA @ 240VAC
• Mounting Type: Bolt-On
  
• Height: 6.35 inches
  
• Weight: 3.0 lbs
  
• Temperature Rating: 40°C
  
• Type: Molded Case Circuit Breaker (Sentron Style)
  

Material Compliance and Certifications

• Built to meet standard industry requirements for molded case circuit breakers
• HACR rated for heating, air conditioning, and refrigeration systems
• Manufactured using durable insulating and conductive materials for consistent performance
• Designed in line with applicable UL safety standards

Where It Works Best

• You’ll typically find the ED63B045 in commercial panelboards, industrial distribution systems, and HVAC setups. It’s a practical fit for motor loads, air conditioning units, refrigeration equipment, and general power distribution where a 45-amp, three-phase breaker is required. If you’re maintaining or upgrading an existing system using ED6 frame breakers, this one drops in without complication.