HED43B045L - 45Amp Circuit Breaker

HED43B045L - 45Amp Circuit Breaker

The Siemens HED43B045L is a 45 Amp, 3-pole molded case circuit breaker from the SENTRON ED frame family, designed for protecting your 480VAC electrical distribution systems from overloads and short circuits. It uses a thermal-magnetic trip unit, combining thermal protection for sustained overload conditions with magnetic protection for high fault currents.

Key Features and Benefits

• 45 Amp continuous current rating
• Three-pole configuration for three-phase systems
• Thermal-magnetic trip unit provides overload and short-circuit protection
• Rated for use on 480VAC electrical systems
• Factory-installed line and load lugs (LN1E100)
• Accepts 10 AWG to 1/0 AWG copper or aluminum wire
• Standard 40°C calibrated breaker
• Designed for Siemens SENTRON ED frame applications
• Built to last in commercial and industrial environments
• Form, fit, and functional replacement for compatible Siemens breakers
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HED43B045L
  
• Manufacturer Part Number (MPN): HED43B045L
  
• Product Type: Molded Case Circuit Breaker
  
• Series: SENTRON ED Frame (HED4)
  
• Current Rating: 45 Amps
  
• Number of Poles: 3
  
• Voltage Rating: 480VAC
  
• Frequency: 50/60 Hz
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating: 42kAIC at 480VAC
  
• Terminal Type: Line and Load Lugs (LN1E100)
  
• Wire Range: 10 AWG–1/0 AWG Copper or Aluminum
  
• Calibration: Standard 40°C
  
• Dimensions (W × H × D): 3" × 6.35" × 3.92"
  
• Weight: 3.616 lbs
  
• Country of Origin: Mexico
  
• UPC: 783643236455
  

Material Compliance and Certifications

The Siemens HED43B045L is manufactured in accordance with UL 489 and IEC 60947-2 standards for molded case circuit breakers. REACH Article 33 information is available from Siemens. RoHS compliance information is not specified by the manufacturer.

Where It Works Best

The HED43B045L is commonly used in commercial and industrial electrical distribution systems operating at 480VAC. It is suitable for compatible Siemens panelboards, switchboards, motor control equipment, and other low-voltage distribution systems requiring a 45 Amp, 3-pole ED frame breaker with a 42kA interrupting rating. It is especially well suited for maintenance and repair projects where maintaining the original equipment specifications and compatibility is important.