E43B045L - 45Amp Circuit Breaker

E43B045L - 45Amp Circuit Breaker

When you need a compatible replacement breaker for an existing electrical system, the E43B045L 45 Amp 3-Pole Molded Case Circuit Breaker provides the ratings and configuration required to help keep equipment operating as intended. Designed as a Type E43 molded case circuit breaker, this unit is commonly used in commercial and industrial power distribution systems where dependable circuit protection is essential.

One detail that maintenance professionals appreciate is the inclusion of both line and load-side terminals, which can help simplify installation and replacement work. Designed for operation in environments up to 40°C, this breaker is built to last and supports the continued operation of compatible electrical distribution equipment.

Whether you're maintaining a manufacturing facility, commercial building, warehouse, or HVAC system, the E43B045L delivers the form, fit, and functional compatibility needed for many existing installations. Its combination of electrical ratings, compact footprint, and molded case construction makes it a practical choice when replacing a breaker in equipment originally designed for a Type E43 device.

Key Features and Benefits

• 45 Amp current rating for compatible electrical distribution systems
• 3-pole configuration for three-phase applications
• Type E43 molded case circuit breaker
• Molded case design for commercial and industrial environments
• Includes both line and load-side terminals
• HACR rated for qualifying HVAC and refrigeration equipment
• Interrupting capacity of 18kA at 480VAC and 25kA at 240VAC
• Designed for operation in ambient temperatures up to 40°C
• Helps protect circuits from overloads and short-circuit faults
• Form, fit, and functional replacement for compatible equipment
• Built to last in demanding facility environments

Technical Specifications

• Part Number: E43B045L
  
• Type: E43
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Amperage Rating: 45 Amps
  
• Poles: 3
  
• A.I.C. Rating: 18kA @ 480VAC; 25kA @ 240VAC
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Included Terminals: Line and Load-Side Terminals
  
• Width: 3.0 in.
  
• Height: 6.35 in.
  
• Depth: 3.92 in.
  
• Dimensions: 3.0"W × 6.35"H × 3.92"D
  
• Approximate Shipping Weight: 5.38 lbs.
  

Material Compliance and Certifications

• HACR Rated
• Designed for use in compatible electrical distribution equipment
• Intended for installation in accordance with applicable electrical codes and manufacturer requirements
• Suitable for operation within published voltage and interrupting capacity ratings

Where It Works Best

The E43B045L is commonly used in commercial and industrial facilities that require a compatible Type E43 molded case circuit breaker for maintenance, repair, or replacement projects. Typical applications include:

• Commercial office buildings
• Industrial facilities
• Manufacturing plants
• HVAC and refrigeration systems
• Warehouses and distribution centers
• Educational and institutional facilities
• Electrical distribution panels and panelboards
• Mechanical equipment rooms
• Facility maintenance and retrofit projects involving compatible legacy equipment

For electrical professionals maintaining existing systems, the E43B045L provides the proper amperage, interrupting capacity, pole configuration, and terminal arrangement needed to support the continued operation of compatible electrical equipment.