ED43B020L - 20Amp Circuit Breaker

ED43B020L - 20Amp Circuit Breaker

If you need a dependable replacement breaker that fits seamlessly into your existing electrical system, the Siemens ED43B020L is an excellent solution. Designed as a form, fit, and functional replacement for compatible Siemens ED-frame installations, this 20 Amp, 3-pole molded case circuit breaker provides reliable overcurrent protection while helping you maintain the original configuration of your electrical equipment.

Part of the Siemens Sentron ED frame family, the ED43B020L features a thermal magnetic trip unit that protects against both sustained overloads and short-circuit conditions. The thermal element responds to prolonged overcurrent situations, while the magnetic element trips quickly during fault conditions to help protect connected equipment.

Key Features and Benefits

• Part of the Siemens Sentron ED frame circuit breaker family
• 20 Amp continuous current rating
• 3-pole configuration for three-phase electrical systems
• Thermal magnetic trip unit for overload and short-circuit protection
• Rated for 480V AC applications
• 18kA interrupting capacity (18kAIC) at 480V AC
• Includes line and load side lugs (SA1E025) for convenient installation
• Compatible with 14–10 AWG copper and 12–10 AWG aluminum conductors
• Designed for standard 40°C operating conditions
• Form, fit, and functional replacement for compatible Siemens ED-frame breakers
• Built to last for commercial and industrial electrical applications
  

Technical Specifications

• Catalog Number: ED43B020L
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Series / Frame: Sentron ED Frame
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 480V AC
  
• Number of Poles: 3
  
• Interrupting Rating: 18kAIC at 480V AC
  
• Terminal Type: Line and Load Side Lugs (SA1E025)
  
• Wire Range: 14–10 AWG Copper / 12–10 AWG Aluminum
  
• Reference Operating Temperature: 40°C
  
• Dimensions:
  • Width: 3.00 in.
  • Height: 6.35 in.
  • Depth: 3.92 in.
• Weight: 3.801 lb.
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens ED43B020L meets UL 489 and IEC 60947-2 standards for molded case circuit breakers. It is RoHS compliant (since July 1, 2006) and supports WEEE (2012/19/EU) environmental requirements where applicable. Material information is available in accordance with REACH Article 33 guidelines. Installation should always be completed by qualified electrical professionals and in accordance with the National Electrical Code (NEC) and all applicable local electrical codes.

Where It Works Best

• Siemens ED-frame panelboards and switchboards
• Commercial and industrial electrical distribution systems
• 480V AC branch circuit protection
• Warehouses, manufacturing plants, and commercial facilities
• Maintenance and replacement of existing Siemens ED-frame breakers
• Applications requiring a 20 Amp, 3-pole breaker with an 18kA interrupting capacity
• Installations utilizing line and load side lug terminations
• Electrical systems where maintaining original equipment compatibility is important