E43B100L - 100Amp Circuit Breaker

E43B100L - 100Amp Circuit Breaker

When you need a 100 Amp 3-pole molded case circuit breaker that matches the requirements of an existing electrical system, the E43B100L provides the ratings and configuration needed for a proper replacement application. Designed as a Type E43 circuit breaker, this unit is commonly used in commercial and industrial power distribution systems where maintaining equipment compatibility is essential.

Installation is made easier with the inclusion of both line-side and load-side terminals, helping simplify replacement and maintenance work. Its compact footprint—measuring just 3.0 inches wide, 6.35 inches high, and 3.92 inches deep—allows it to fit compatible equipment without requiring modifications.

Whether you're maintaining a manufacturing facility, servicing a commercial building, or replacing a breaker in an existing distribution system, the E43B100L molded case circuit breaker offers the form, fit, and functional characteristics needed for continued operation. Built to last and designed for dependable service, it remains a practical choice for electrical professionals tasked with keeping critical power systems running safely and efficiently.

Key Features and Benefits

• 100 Amp current rating
• 3-pole configuration for three-phase electrical systems
• Type E43 molded case circuit breaker
• Includes both line-side and load-side terminals
• HACR rated for qualifying HVAC and refrigeration applications
• 18kA interrupting rating at 480VAC
• 25kA interrupting rating at 240VAC
• Designed for operation in ambient temperatures up to 40°C (104°F)
• Supports form, fit, and functional replacement requirements
• Suitable for compatible commercial and industrial electrical systems
• Helps protect circuits from overload and short-circuit conditions within published ratings
• Built to last for long-term service and maintenance applications

Technical Specifications

• Part Number: E43B100L
  
• Type: E43
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Amperage Rating: 100 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
• Molded case circuit breaker construction
• Rated for operation in ambient temperatures up to 40°C
• Designed for operation within published voltage and interrupting capacity ratings
• Intended for installation in accordance with applicable electrical codes and manufacturer requirements
• Suitable for use in compatible electrical distribution equipment and assemblies

Where It Works Best

The E43B100L 100 Amp 3-Pole Circuit Breaker is commonly used in facilities that require a compatible Type E43 molded case circuit breaker for maintaining or servicing existing electrical systems.

• Typical applications include:
• Commercial office buildings
• Manufacturing facilities and industrial plants
• HVAC and refrigeration systems
• Educational and institutional facilities
• Healthcare facilities
• Warehouses and distribution centers
• Mechanical and electrical equipment rooms
• Three-phase power distribution systems
• Panelboard and switchboard installations
• Maintenance and retrofit projects requiring a compatible replacement breaker
• Existing electrical systems utilizing Type E43 circuit breakers

For electricians, maintenance professionals, contractors, and facility managers, the E43B100L provides the ratings, configuration, and compatibility needed when a 100 Amp, 3-pole Type E43 molded case circuit breaker is required to support the continued operation of existing electrical equipment and power distribution systems.