ED42B045 - 45Amp Circuit Breaker

ED42B045 - 45Amp Circuit Breaker

The Siemens ED42B045 is a 45 Amp, 2-pole molded case circuit breaker designed for use in compatible Siemens ED-frame panelboards and electrical distribution systems. If you're replacing an existing breaker or performing routine maintenance on a commercial or industrial electrical system, this breaker delivers the form, fit, and function needed to maintain your original equipment configuration. Built to last, it is engineered to provide dependable circuit protection when installed in applications that match its electrical ratings.

Equipped with a thermal magnetic trip unit, the ED42B045 responds to both prolonged overload conditions and instantaneous short circuits, helping protect connected equipment and wiring.

Key Features and Benefits

• 45 Amp, 2-pole Siemens ED frame molded case circuit breaker
• Thermal magnetic trip unit for reliable overload and short-circuit protection
• Rated for 480V AC commercial and industrial applications
• 18kA interrupting capacity (18kAIC) at 480V AC
• Load-side lug terminals (LN1E100) for compatible installation
• Accepts 10–1/0 AWG copper or aluminum conductors
• Designed for use with compatible Siemens ED-frame equipment
• Helps maintain original panel configuration during replacement
• Form, fit, and functional replacement for compatible applications
• Built to last in properly matched electrical systems
  

Technical Specifications

• Catalog Number: ED42B045
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: ED
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 45 Amps
  
• Voltage Rating: 480V AC
  
• Poles: 2
  
• Interrupt Rating: 18 kAIC at 480V AC
  
• Terminal Type: Load Lug Terminals (LN1E100)
  
• Wire Range: 10–1/0 AWG Copper / Aluminum
  
• Operating Temperature Reference: Standard 40°C Breaker
  
• Dimensions: 2.00 in. W × 6.35 in. H × 3.92 in. D
  
• Weight: 2.551 lb
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• The Siemens ED42B045 is manufactured to meet UL 489 and IEC 60947-2 standards for molded case circuit breakers. It is RoHS compliant (since July 1, 2006), subject to WEEE (2012/19/EU) take-back obligations where applicable, and Siemens provides REACH Article 33 information to support material transparency.
• Installation should always 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 distribution equipment
• Commercial electrical distribution systems
• Industrial power distribution panels
• 480V AC branch circuit protection
• Replacement of existing compatible Siemens ED-frame breakers
• Maintenance and repair of installed electrical systems
• Applications requiring a 45 Amp, 2-pole molded case circuit breaker
• Projects where maintaining original equipment compatibility is important