HED43B040 - 40Amp Circuit Breaker

HED43B040 - 40Amp Circuit Breaker

The Siemens HED43B040 is a 40 Amp, 3-pole molded case circuit breaker designed for use in 480VAC three-phase electrical distribution systems. Part of the Siemens SENTRON ED frame product family, this breaker features a thermal-magnetic trip unit that helps protect your electrical circuits from overloads and short circuits while maintaining the original electrical characteristics required in compatible equipment.

Key Features and Benefits

• Siemens SENTRON ED frame molded case circuit breaker
• 40 Amp current rating
• Three-pole configuration for three-phase electrical systems
• Thermal-magnetic trip unit helps protect against overloads and short circuits
• Rated for 480VAC applications
• Factory-installed load lugs only (LN1E100)
• Accepts 10 AWG to 1/0 AWG copper or aluminum conductors
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HED43B040
  
• Manufacturer Part Number (MPN): HED43B040
  
• Product Type: Molded Case Circuit Breaker
  
• Series: SENTRON ED Frame (HED4)
  
• Amperage: 40 Amps
  
• Poles: 3
  
• Voltage Rating: 480VAC
  
• Frequency: 50/60 Hz
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating: 42kAIC @ 480VAC
  
• Terminal Type: Load Lugs Only (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: 3.699 lbs.
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens HED43B040 is manufactured in accordance with UL 489 and IEC 60947-2 standards for molded case circuit breakers.

Where It Works Best

The Siemens HED43B040 is well suited for commercial, industrial, and institutional facilities operating 480VAC three-phase electrical systems. It is commonly installed in compatible Siemens panelboards, switchboards, motor control centers, and other power distribution equipment where maintaining the original electrical ratings and physical fit is important.