E43B090 - 90Amp Circuit Breaker

E43B090 - 90Amp Circuit Breaker

When maintaining or servicing an existing electrical distribution system, having the correct circuit breaker matters. The E43B090 90 Amp 3-Pole Molded Case Circuit Breaker is designed for applications that require a compatible Type E43 breaker, making it a practical choice for commercial and industrial power systems where proper fit and electrical ratings are essential.

Rated at 90 amps and configured with three poles, this breaker is intended for use in three-phase electrical systems that depend on reliable circuit protection against overloads and short circuits. Its bolt-on design provides a secure connection within compatible equipment, while the included load-side terminals can help simplify installation and replacement work.

Whether you're maintaining a manufacturing facility, servicing a commercial building, or supporting an existing power distribution system, the E43B090 delivers the form, fit, and function needed for compatible installations. Built to last and designed for operation in ambient temperatures up to 40°C, this molded case circuit breaker continues to be a dependable component for keeping electrical systems operating safely and efficiently.

Key Features and Benefits

• 90 Amp current rating
• 3-pole configuration for three-phase electrical systems
• Type E43 molded case circuit breaker
• Bolt-on mounting design
• Includes load-side terminals
• HACR rated for qualifying HVAC and refrigeration applications
• 18kA interrupting capacity at 480VAC
• 25kA interrupting capacity at 240VAC
• Designed for operation in 40°C ambient environments
• 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 applications

Technical Specifications

• Part Number: E43B090
  
• Type: E43
  
• Circuit Breaker Type: Molded Case Circuit Breaker
  
• Amperage Rating: 90 Amps
  
• Poles: 3
  
• Mounting Style: Bolt-On
  
• A.I.C. Rating: 18kA @ 480VAC; 25kA @ 240VAC
  
• Temperature Rating: 40°C
  
• HACR Rated: Yes
  
• Included Terminals: 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
• 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 E43B090 90 Amp 3-Pole Circuit Breaker is commonly used in facilities that require a compatible Type E43 molded case circuit breaker to maintain existing electrical distribution systems and equipment.

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

For electricians, contractors, maintenance personnel, and facility managers, the E43B090 provides a dependable solution when a 90 Amp, 3-pole, bolt-on Type E43 breaker is needed to support the continued operation of compatible electrical equipment.