E42B045 - 45Amp Circuit Breaker

E42B045 - 45Amp Circuit Breaker

When a circuit breaker needs replacement, finding one with the correct ratings, dimensions, and mounting configuration is often the most important part of keeping an electrical system operating as intended. The E42B045 molded case circuit breaker is a 45 amp, 2-pole Type E42 breaker designed for applications that require the same form, fit, and function as the original device.

Whether you're replacing a breaker during scheduled maintenance, repairing existing equipment, or sourcing a compatible component for an electrical distribution system, the E42B045 offers the ratings and configuration needed to support continued operation. Built to last and designed around established electrical specifications, it helps preserve the original design requirements of compatible installations.

Key Features and Benefits

• 45 amp current rating for compatible electrical distribution applications
• 2-pole configuration for multi-pole circuit protection
• Type E42 molded case circuit breaker
• Bolt-on mounting design for secure installation
• Includes load-side terminals
• HACR rated for qualifying HVAC and refrigeration equipment
• Rated for operation in ambient temperatures up to 40°C (104°F)
• Interrupting capacity of 25kA at 240VAC and 18kA at 480VAC
• Designed to match the form, fit, and function requirements of compatible systems
• Suitable for maintenance, repair, and replacement applications
• Built to last in demanding commercial and industrial environments

Technical Specifications

• Part Number: E42B045
  
• Type: E42
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Mounting Style: Bolt-On
  
• Amperage: 45 Amps
  
• Poles: 2
  
• A.I.C. Rating: 25kA @ 240VAC; 18kA @ 480VAC
  
• Temperature Rating: 40°C (104°F)
  
• HACR Rated: Yes
  
• Included Terminals: Load-Side Terminals
  
• Width: 2.0 in.
  
• Height: 6.35 in.
  
• Depth: 3.92 in.
  
• Dimensions: 2.0"W x 6.35"H x 3.92"D
  
• Approximate Ship Weight: 4.31 lbs.
  

Material Compliance and Certifications

• HACR rated for qualifying heating, ventilation, air conditioning, and refrigeration applications
• Molded case circuit breaker construction
• Designed for use in systems requiring the published electrical ratings and configuration
• Intended for installation in accordance with applicable electrical codes and manufacturer requirements
• Rated for operation in ambient temperatures up to 40°C (104°F)

Where It Works Best

The E42B045 is well suited for commercial facilities, industrial operations, manufacturing plants, HVAC equipment, electrical distribution systems, maintenance projects, and retrofit applications that require a 45 amp, 2-pole Type E42 circuit breaker.