ED42B050 - 50Amp Circuit Breaker

ED42B050 - 50Amp Circuit Breaker

Looking for a reliable replacement breaker that fits seamlessly into your existing system? The Siemens ED42B050 is a 50 Amp, 2-pole molded case circuit breaker designed specifically for compatible Siemens ED-frame equipment. Whether you're maintaining a commercial facility or servicing an industrial setup, this breaker helps you keep your system running smoothly without the hassle of major modifications.

Built with a thermal magnetic trip unit, the ED42B050 responds to both overloads and short circuits—helping protect your electrical system and connected equipment when it matters most. It’s a practical, dependable choice for professionals who need a straightforward solution that matches original specifications.

If you're replacing an existing breaker or maintaining system integrity, the Siemens ED42B050 offers the compatibility and performance you need—without unnecessary complexity.

Key Features and Benefits

• 50 Amp, 2-pole Siemens ED frame molded case circuit breaker
• Thermal magnetic trip unit helps protect against overloads and short circuits
• Rated for 480V AC electrical distribution systems
• 18kA interrupting capacity (18kAIC) at 480V AC
• Load-side lug terminals (LN1E100) for secure connections
• Accepts 10–1/0 AWG copper or aluminum conductors
• Designed for use with compatible Siemens ED-frame panelboards and equipment
• Ideal for replacement and maintenance applications
• Helps maintain original system configuration
• Suitable for long-term use in properly matched environments
  

Technical Specifications

• Catalog Number: ED42B050
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: ED
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 50 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: 0.258 lb
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• The Siemens ED42B050 is manufactured in accordance with UL 489 and IEC 60947-2 standards, supporting use in applications that require recognized electrical safety compliance. It is RoHS compliant (since July 1, 2006) and falls under WEEE (2012/19/EU) guidelines where applicable. Siemens also provides REACH Article 33 information for material transparency.
• For safety and proper operation, installation should always be performed by qualified electrical professionals following the National Electrical Code (NEC) and all applicable local regulations.
  

Where It Works Best

• Siemens ED-frame panelboards and compatible distribution equipment
• Commercial electrical systems
• Industrial power distribution environments
• 480V AC branch circuit protection
• Maintenance and repair of existing electrical setups
• Replacement of compatible Siemens ED-frame breakers
• Facilities needing a 50 Amp, 2-pole breaker with 18kA interrupting capacity
• Applications where maintaining original equipment compatibility is essential