EB3040L - 40Amp Circuit Breaker

EB3040L - 40Amp Circuit Breaker

When you're maintaining an older electrical system, finding the right replacement breaker isn't just about matching amperage—it's about preserving compatibility with the equipment already in place. The EB3040L Type EB circuit breaker was designed for use in compatible Type EB panelboards manufactured before 1989, making it a practical choice for facilities that continue to rely on proven electrical infrastructure.

This 40 amp, 3-pole thermal-magnetic circuit breaker combines the ratings and configuration needed for many existing three-phase electrical systems. Its thermal-magnetic trip mechanism responds to both overload conditions and short-circuit events, helping protect connected circuits and equipment in compatible applications.

Whether you're maintaining a manufacturing plant, office building, school, municipal facility, or another property with legacy electrical equipment, the EB3040L provides the configuration and protection characteristics needed for compatible replacement applications. Built to last and designed to work within existing Type EB systems, it helps support the continued operation of electrical infrastructure that remains in service today.

Key Features and Benefits

• Designed for compatible Type EB panelboards manufactured before 1989
• 40 amp rating for branch and feeder circuit protection
• 3-pole configuration for three-phase electrical systems
• Thermal-magnetic trip mechanism for overload and short-circuit protection
• Non-interchangeable trip unit designed to maintain original equipment specifications
• Includes both line and load terminals
• 10kA interrupting capacity at 240VAC
• Rated for operation in ambient temperatures up to 40°C (104°F)
• Form, fit, and function replacement for compatible legacy installations
• Suitable for commercial, industrial, institutional, and municipal applications
• Built to last for ongoing maintenance and replacement projects

Technical Specifications

• Part Number: EB3040L
  
• Type: EB
  
• Amperage: 40 Amps
  
• Poles: 3
  
• Voltage Rating: 240VAC
  
• Interrupting Capacity: 10kA A.I.C. @ 240VAC
  
• Trip Mechanism: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C (104°F)
  
• Terminals Included: Line and Load Terminals
  
• Width: 4.13 in.
  
• Height: 6.0 in.
  
• Depth: 3.38 in.
  
• Dimensions: 4.13"W × 6.0"H × 3.38"D
  
• Approximate Shipping Weight: 5.50 lbs.
  

Material Compliance and Certifications

The EB3040L circuit breaker is intended for use in equipment designed to accept Type EB breakers. Installation should be performed by qualified electrical personnel and in accordance with applicable electrical codes, equipment labeling requirements, and manufacturer specifications. Users should verify compatibility, interrupting ratings, voltage requirements, conductor sizing, and installation conditions before placing the breaker into service.

Where It Works Best

The EB3040L is commonly used in:

• Type EB panelboards manufactured before 1989
• Commercial office buildings
• Manufacturing and industrial facilities
• Educational institutions and campuses
• Municipal and government buildings
• Healthcare and institutional facilities
• Maintenance and repair projects involving existing electrical infrastructure
• Three-phase power distribution systems requiring a compatible Type EB breaker
• Applications where maintaining original panel specifications is important