ED42B020L - 20Amp Circuit Breaker

ED42B020L - 20Amp Circuit Breaker

Looking for a reliable replacement breaker that fits seamlessly into your existing setup? The Siemens ED42B020L is a 20 Amp, 2-pole molded case circuit breaker designed to keep your commercial or industrial electrical system running smoothly—without the hassle of modifying your panel. Built specifically for compatibility with Siemens ED-frame equipment, this breaker offers the same trusted form, fit, and function you expect, making upgrades or replacements simple and stress-free.

What makes this breaker stand out is its thermal magnetic trip unit, which delivers dependable protection in two ways. The thermal component responds to prolonged overloads, while the magnetic element reacts instantly to short circuits—helping safeguard your wiring and connected equipment when it matters most. With a 480V AC rating and an 18kA interrupting capacity (18kAIC), the ED42B020L is well-suited for demanding electrical environments.

Key Features and Benefits

• 20 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 applications in commercial and industrial settings
• 18kA interrupting capacity (18kAIC) at 480V AC
• Includes line and load-side lug terminals (SA1E025) for easy installation
• Accepts 14–10 AWG copper or 12–10 AWG aluminum conductors
• Designed for seamless compatibility with Siemens ED-frame equipment
• Ideal for replacing existing breakers without panel modifications
• Built for long-term performance and dependable operation
  

Technical Specifications

• Catalog Number: ED42B020L
  
• Manufacturer: Siemens
  
• Product Type: Molded Case Circuit Breaker
  
• Frame Type: ED
  
• Trip Unit: Thermal Magnetic
  
• Amperage Rating: 20 Amps
  
• Voltage Rating: 480V AC
  
• Poles: 2
  
• Interrupt Rating: 18 kAIC at 480V AC
  
• Terminal Type: Line and Load Lug Terminals (SA1E025)
  
• Wire Range: 14–10 AWG Copper / 12–10 AWG Aluminum
  
• Operating Temperature Reference: Standard 40°C Breaker
  
• Dimensions: 2.00 in. W × 6.35 in. H × 3.92 in. D
  
• Weight: 2.712 lb
  
• Product Family: ED4 18kAIC, 480VAC
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

• The Siemens ED42B020L meets UL 489 and IEC 60947-2 standards for molded case circuit breakers, ensuring it aligns with recognized safety and performance requirements. It is also RoHS compliant (since November 2, 2017) and subject to WEEE (2012/19/EU) take-back regulations where applicable.
• For best results and safety, installation should always be handled by qualified electrical professionals in accordance with the National Electrical Code (NEC) and local regulations.
  

Where It Works Best

• Siemens ED-frame panelboards and distribution equipment
• Commercial electrical distribution systems
• Industrial power distribution panels
• 480V AC branch circuit protection applications
• Replacement of existing Siemens ED-frame circuit breakers
• Manufacturing facilities and commercial buildings
• Installations requiring a 20 Amp, 2-pole molded case circuit breaker
• Projects where maintaining original equipment compatibility is essential