EB2040L - 40Amp Circuit Breaker

EB2040L - 40 Amp Circuit Breaker

The EB2040L circuit breaker is a 2-pole, 40-amp thermal-magnetic breaker designed for dependable overcurrent protection in legacy electrical distribution systems. Built for compatibility with EB-frame panels manufactured prior to 1989, this breaker provides the correct form, fit, and function required when maintaining or servicing older panelboards. Its thermal-magnetic trip mechanism responds to both sustained overloads and short-circuit conditions, helping protect connected circuits and electrical equipment. Rated 10kA A.I.C. at 120/240VAC and calibrated for operation at 40°C, the EB2040L supports stable performance in standard electrical environments. Line and load terminals are included, helping streamline installation and ensuring secure conductor connections. Designed with durable internal components, this breaker reflects the long-lasting construction typical of equipment produced for legacy electrical systems.

Key Features and Benefits

• 2-Pole Configuration – Provides protection for 120/240VAC circuits requiring two poles.
• 40 Amp Current Rating – Suitable for branch circuits requiring a 40A overcurrent device.
• Thermal-Magnetic Protection – Combines thermal overload protection with instantaneous magnetic response for short-circuit conditions.
• 10kA Interrupting Capacity – Rated to safely interrupt fault currents up to 10,000 amps at 120/240VAC.
• EB Frame Compatibility – Designed specifically for EB-frame panelboards manufactured before 1989.
• Non-Interchangeable Trip Unit – Factory-calibrated trip mechanism for consistent protection.
• Line and Load Terminals Included – Helps simplify installation and wiring.
• 40°C Rated – Suitable for typical operating temperatures in electrical distribution equipment.
• Built to Last – Constructed with durable components commonly used in legacy breaker designs.

Technical Specifications

• Part Number: EB2040L
  
• Poles: 2
  
• Amperes: 40A
  
• Voltage Rating: 120/240 VAC
  
• Interrupting Capacity (A.I.C.): 10kA @ 120/240VAC
  
• Frame Type: EB
  
• Trip Type: Thermal-Magnetic
  
• Trip Unit: Non-Interchangeable
  
• Temperature Rating: 40°C
  
• Terminals: Line and Load Included
  
• Panel Compatibility: Designed for panels manufactured prior to 1989
  
• Shipping Weight: 2.75 lbs
  
• Shipping Height: 6.0 in
  

Material Compliance and Certifications

• Industry Standards: This circuit breaker is manufactured to meet applicable industry construction and performance standards associated with molded case circuit breakers used in North American electrical distribution systems.
• Materials: Materials and internal components are designed to align with common electrical equipment compliance expectations for commercial and industrial installations.
  

Where It Works Best

• The EB2040L 40A circuit breaker is typically used in maintenance, repair, and replacement projects involving legacy EB-frame panelboards installed before 1989.
• Commercial buildings with older electrical distribution equipment
• Industrial facilities maintaining original panelboard systems
• Institutional buildings such as schools or municipal properties
• Service and repair applications where matching the original breaker form and rating is required
• By matching the required frame type, pole configuration, and electrical ratings, the EB2040L provides a practical solution for keeping compatible legacy electrical systems in safe working condition.