ED42B090L - 90Amp Circuit Breaker

ED42B090L - 90Amp Circuit Breaker

The Siemens ED42B090L is a 90 Amp, 2-pole molded case circuit breaker designed to provide dependable overcurrent protection for commercial and industrial electrical distribution systems. Built as part of the Siemens Sentron ED frame product family, this breaker combines a thermal-magnetic trip unit with an 18 kA interrupting capacity at 480V AC to help protect circuits from both overloads and short circuits. Whether you're maintaining existing equipment or replacing a compatible breaker, the ED42B090L offers the proper form, fit, and functional replacement for Siemens ED-frame applications while preserving compatibility with your installed electrical system.

Key Features and Benefits

• 90 Amp continuous current rating
• 2-pole configuration for 480V AC applications
• Thermal magnetic trip unit provides protection against overloads and short circuits
• Rated for 480V AC electrical distribution systems
• 18kA interrupting capacity (18kAIC) at 480V AC
• Factory-equipped with line and load side lugs (LN1E100)
• Accepts 10–1/0 AWG copper or aluminum conductors
• Standard 40°C breaker design
• Designed as a form, fit, and functional replacement for compatible Siemens ED-frame circuit breakers
• Built to last for dependable long-term service in compatible electrical systems
  

Technical Specifications

• Catalog Number: ED42B090L
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Frame: ED Frame (Sentron)
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 90 Amps
  
• Voltage Rating: 480V AC
  
• Number of Poles: 2
  
• Interrupting Rating: 18kAIC at 480V AC
  
• Terminal Type: Line and Load Side Lugs (LN1E100)
  
• Wire Range: 10–1/0 AWG Copper/Aluminum
  
• Reference Operating Temperature: 40°C
  
• Dimensions:
  • Width: 2.00 in.
  • Height: 6.35 in.
  • Depth: 3.92 in.
• Weight: 2.712 lb.
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• The Siemens ED42B090L is manufactured to comply with UL 489 and IEC 60947-2 standards for molded case circuit breakers, supporting recognized safety and performance requirements. The product is subject to WEEE (2012/19/EU) take-back obligations where applicable and includes REACH Article 33 information for material transparency. Siemens does not specify a RoHS compliance status for this catalog number in the published product data.
• Installation should be performed by qualified electrical personnel in accordance with the National Electrical Code (NEC) and all applicable local electrical codes.
  

Where It Works Best

• Siemens ED-frame panelboards and compatible electrical distribution equipment
• Commercial buildings and industrial facilities
• 480V AC branch circuit protection
• Manufacturing plants and processing facilities
• Maintenance and repair of existing electrical systems
• Replacement of compatible Siemens ED-frame molded case circuit breakers
• Applications requiring a 90 Amp, 2-pole breaker with an 18kA interrupting capacity
• Installations where line and load side lug connections are required
• Projects where maintaining original equipment compatibility is important