ED41B040L - 40Amp Circuit Breaker

ED41B040L - 40Amp Circuit Breaker

Looking for a reliable circuit breaker that fits seamlessly into your existing setup? The Siemens ED41B040L is a 40 Amp, 1-pole molded case circuit breaker designed to deliver dependable overcurrent protection for commercial and industrial electrical systems operating at 277VAC. Whether you're replacing an older unit or maintaining your current system, this breaker is built as a form, fit, and functional replacement for compatible Siemens ED Frame installations—so you can upgrade or repair without redesigning your panel.

What makes this breaker stand out is its thermal-magnetic trip unit, which responds quickly to both prolonged overloads and sudden short circuits. With a 22 kAIC interrupting capacity at 277VAC, it’s engineered to handle demanding environments where safety and performance matter most.

Key Features and Benefits

• 40 Amp, 1-pole molded case circuit breaker for consistent and reliable protection
• Designed as a direct replacement for compatible Siemens ED Frame breakers
• Thermal-magnetic trip unit reacts to both overloads and short circuits
• Ideal for 277VAC commercial and industrial systems
• 22 kAIC interrupting capacity for dependable fault protection
• Comes with line-side and load-side lugs for easy installation
• Line wire range: 10–1/0 AWG copper or aluminum
• Load wire range: 10–4 AWG copper or aluminum
• Standard ED Frame design ensures compatibility with existing Siemens equipment
• Built for durability and long-lasting performance
• Complies with UL 489 and IEC 60947-2 standards
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ED41B040L
  
• Product Family: SENTRON ED Frame Molded Case Circuit Breaker
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: ED Frame
  
• Amperage Rating: 40 Amps
  
• Number of Poles: 1
  
• Voltage Rating: 277VAC
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Capacity: 22 kAIC at 277VAC
  
• Terminal Configuration: Line and Load Lugs
  
• Line Wire Range: 10–1/0 AWG Copper or Aluminum
  
• Load Wire Range: 10–4 AWG Copper or Aluminum
  
• Dimensions:
  • Width: 1.00 in.
  • Height: 6.35 in.
  • Depth: 3.92 in.
• Weight: 1.146 lb
  
• UPC: 783643089891
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens ED41B040L is manufactured to meet the UL 489 and IEC 60947-2 standards, ensuring reliable performance in demanding environments. It also complies with WEEE (2012/19/EU) take-back requirements. For best results, always match replacement breakers with the original specifications—including frame type, amperage, voltage, and interrupting capacity. Installation should be handled by qualified professionals in accordance with the National Electrical Code (NEC) and local regulations.

Where It Works Best

• Commercial lighting systems
• Branch circuit protection
• Office buildings
• Retail spaces
• Schools and universities
• Healthcare facilities
• Industrial distribution systems
• Manufacturing environments
• Maintenance of Siemens ED Frame equipment
• Installations requiring line-side and load-side lug connections