ED42B040L - 40Amp Circuit Breaker

ED42B040L - 40 Amp Circuit Breaker

The ED42B040L circuit breaker is a dependable molded case circuit breaker designed to protect electrical systems from overloads and short circuits in commercial and industrial environments. Built on the ED4 frame platform, this 2-pole, 40-amp breaker delivers consistent protection while maintaining a compact footprint that fits easily into compatible panelboards and distribution equipment. With interrupting ratings of 18kA at 480VAC and 65kA at 240VAC, it offers strong fault-current protection where higher available fault currents are present. This Sentron-style breaker is HACR rated and engineered for reliable performance at 40°C ambient conditions, making it suitable for demanding HVAC and power distribution applications. The ED42B040L includes both line-side and load-side terminals and is approved for reverse feed installation, giving electricians and maintenance professionals greater installation flexibility.

Key Features and Benefits

• 40 Amp Continuous Protection – Designed to protect branch circuits from overloads and short circuits while maintaining stable electrical performance.
• 2-Pole Configuration – Ideal for applications requiring simultaneous disconnection across two conductors.
• High Interrupting Capacity – Rated 18kA at 480VAC and 65kA at 240VAC, providing dependable protection in systems with higher available fault current.
• Sentron Style Molded Case Design – Known for consistent operation and compatibility with many commercial distribution systems.
• HACR Rated – Suitable for heating, air conditioning, and refrigeration equipment installations.
• Reverse Feed Capable – Allows power to be supplied from either line or load side when installed according to code requirements.
• Included Line and Load Terminals – Simplifies installation and reduces the need for additional accessories.
• Reliable Operation at 40°C Ambient – Built to perform in typical electrical room and panel environments.

Technical Specifications

• Part Number: ED42B040L
  
• Breaker Type: Sentron Style Molded Case Circuit Breaker
  
• Frame Type: ED4
  
• Poles: 2
  
• Current Rating: 40 Amperes
  
• Interrupting Rating:
  • 18kA @ 480VAC
  • 65kA @ 240VAC
• Operating Temperature Rating: 40°C
  
• Mounting / Connection: Includes line and load-side terminals
  
• Reverse Feed: Suitable for reverse feed applications
  
• Approximate Shipping Weight: 2.0 lbs
  
• Height: 6.35 inches
  

Material Compliance and Certifications

• Industry Standards: The ED42B040L molded case circuit breaker is manufactured to meet recognized electrical safety and performance standards commonly required in commercial and industrial power distribution equipment.
• HACR Certification: HACR certification confirms its suitability for HVAC equipment circuits, while the molded case design aligns with widely accepted industry construction practices used in panelboards and distribution systems. Always verify installation according to the National Electrical Code (NEC) and applicable local regulations.
  

Where It Works Best

• The ED42B040L 40A circuit breaker is well-suited for a wide range of electrical protection applications, including:
• Commercial building panelboards
• Industrial control panels and distribution systems
• HVAC equipment protection circuits
• Lighting and branch circuit protection
• Electrical maintenance replacements for compatible ED4 frame systems