E42B100L - 100Amp Circuit Breaker

E42B100L - 100Amp Circuit Breaker

When an electrical system depends on a specific breaker configuration, finding the right replacement can save valuable time and help keep operations running smoothly. The E42B100L is a 100 Amp, 2-pole molded case circuit breaker designed for applications that require a Type E42 breaker with matching electrical ratings and physical dimensions.

Built for commercial and industrial power distribution systems, this breaker helps protect circuits from overloads and short circuits while supporting the continued operation of existing equipment. With an interrupting capacity of 25kA at 240VAC and 18kA at 480VAC, the E42B100L is well suited for a wide range of electrical installations where dependable circuit protection is essential.

Whether you're replacing a failed breaker, performing preventive maintenance, or supporting an older electrical distribution system, the E42B100L offers the form, fit, and functionality needed to maintain system continuity and equipment compatibility.

Key Features and Benefits

• 100 Amp current rating for commercial and industrial electrical distribution systems
• 2-pole configuration for protecting and disconnecting two conductors simultaneously
• Type E42 molded case circuit breaker design
• Includes both line and load-side terminals
• HACR rated for qualifying HVAC and refrigeration applications
• Interrupting capacity of 25kA at 240VAC and 18kA at 480VAC
• Designed for operation in 40°C ambient conditions
• Supports form, fit, and functional replacement requirements in existing systems
• Suitable for maintenance, repair, and retrofit applications
• Helps maintain compatibility with existing electrical equipment
• Durable construction designed for long service life when properly maintained

Technical Specifications

• Part Number: E42B100L
  
• Type: E42
  
• Product Type: Molded Case Circuit Breaker
  
• Amperage Rating: 100 Amps
  
• Poles: 2
  
• Voltage Rating: 240VAC / 480VAC
  
• A.I.C. Rating: 25kA @ 240VAC; 18kA @ 480VAC
  
• Operating Temperature: 40°C
  
• HACR Rated: Yes
  
• Included Accessories: Line and 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 Shipping Weight: 4.31 lbs
  

Material Compliance and Certifications

• The E42B100L is a HACR-rated molded case circuit breaker intended for use within its specified electrical ratings and installation requirements.
• Installation should be performed by qualified personnel in accordance with applicable electrical codes, safety standards, and equipment manufacturer guidelines.
• Users should verify compatibility with the intended panelboard, switchboard, or electrical distribution equipment prior to installation.

Where It Works Best

• Commercial office buildings
• Industrial facilities and manufacturing plants
• Electrical distribution systems
• Panelboards and distribution assemblies
• HVAC and refrigeration equipment requiring HACR-rated protection
• Facility maintenance and repair projects
• Branch circuit and feeder circuit applications
• Existing electrical systems utilizing compatible E42 series breakers
• Electrical retrofit projects
• Applications where maintaining original form, fit, and function is important