ED43B050 - 50Amp Circuit Breaker

ED43B050 - 50Amp Circuit Breaker

When you need a replacement circuit breaker that matches the original specifications of your existing electrical system, the Siemens ED43B050 delivers the compatibility and protection you can count on. This 50 Amp, 3-pole molded case circuit breaker is built for 480V AC three-phase applications and features a dependable thermal magnetic trip unit that helps protect equipment from overloads and short circuits. With an 18kA interrupting capacity at 480V AC, it's designed for use in compatible commercial and industrial power distribution systems where maintaining the original form, fit, and function is important. The breaker includes factory-installed load-side lugs (LN1E100) and accepts 10 AWG to 1/0 AWG copper or aluminum conductors, helping simplify installation in compatible equipment.

Key Features and Benefits

• Siemens Sentron ED frame molded case circuit breaker
• 50 Amp continuous current rating
• Three-pole design for three-phase electrical systems
• Thermal magnetic trip unit helps protect against overloads and short circuits
• Rated for 480V AC applications
• 18kA interrupting capacity (18kAIC) at 480V AC
• Factory-installed load-side lugs (LN1E100)
• Accepts 10 AWG to 1/0 AWG copper or aluminum conductors
• Standard 40°C (104°F) ambient temperature rating
• Built to last for long-term service in compatible electrical systems
• Designed to maintain the original form, fit, and function of compatible Siemens ED frame installations
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ED43B050
  
• Manufacturer Part Number (MFN): ED43B050
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Sentron ED Frame (ED4)
  
• Trip Unit: Thermal Magnetic
  
• Current Rating: 50 Amps
  
• Voltage Rating: 480V AC
  
• Poles: 3
  
• Interrupting Capacity: 18kAIC @ 480V AC
  
• Terminal Type: Load-Side Lugs (LN1E100)
  
• Wire Range: 10 AWG to 1/0 AWG Copper/Aluminum
  
• Ambient Temperature Rating: Standard 40°C (104°F)
  
• Dimensions:
  • Width: 3.00 inches
  • Length: 6.35 inches
  • Depth: 3.92 inches
• Net Weight: 3.691 lbs.
  
• Country of Origin: Mexico

Material Compliance and Certifications

The Siemens ED43B050 is manufactured to meet UL 489 and IEC 60947-2 standards for molded case circuit breakers, helping ensure compliance with widely recognized electrical safety and performance requirements. This breaker is RoHS compliant (since October 10, 2008) and supports WEEE (2012/19/EU) take-back obligations where applicable. For safe operation and proper performance, installation should always be completed by qualified personnel in accordance with the National Electrical Code (NEC), manufacturer recommendations, and all applicable local electrical codes.

Where It Works Best

• Commercial buildings
• Industrial facilities
• Manufacturing plants
• Electrical distribution panels
• Switchboards
• Motor control equipment
• OEM machinery
• Facility maintenance and repair projects
• Existing Siemens ED frame systems requiring a 50 Amp, 3-pole thermal magnetic circuit breaker
• Applications where preserving the original form, fit, and function of the installed electrical equipment is important