ED43B070 - 70Amp Circuit Breaker

ED43B070 - 70Amp Circuit Breaker

When you're replacing an existing molded case circuit breaker, having the correct match helps keep your electrical system operating as originally designed. The Siemens ED43B070 is a 70 Amp, 3-pole molded case circuit breaker from the trusted Sentron ED frame family, built for use in 480V AC electrical distribution systems. Designed as a form, fit, and functional replacement for compatible Siemens installations, this breaker is well suited for maintenance, repairs, and equipment servicing in commercial and industrial environments.

The ED43B070 features a thermal-magnetic trip unit that responds to both sustained overloads and short-circuit conditions, helping protect electrical equipment and branch circuits from damage. With an 18kA interrupting capacity (18kAIC) at 480V AC, it is intended for applications that require the electrical ratings and physical dimensions of the original Siemens ED frame breaker.

Key Features and Benefits

• Siemens Sentron ED frame molded case circuit breaker
• 70 Amp continuous current rating
• Three-pole design for three-phase electrical systems
• Thermal-magnetic trip unit provides protection 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
• Designed to maintain the original form, fit, and function of compatible Siemens ED frame installations
• Built to last for long-term service in commercial and industrial electrical systems
  

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: ED43B070
  
• Manufacturer Part Number (MFN): ED43B070
  
• Product Type: Molded Case Circuit Breaker
  
• Series: Sentron ED Frame (ED4)
  
• Trip Unit: Thermal-Magnetic
  
• Current Rating: 70 Amps
  
• Voltage Rating: 480V AC
  
• Poles: 3
  
• Interrupting Rating: 18kAIC @ 480V AC
  
• Terminal Type: Load Side Lugs (LN1E100)
  
• Wire Range: 10 AWG–1/0 AWG Copper or Aluminum
  
• Ambient Temperature Rating: 40°C (104°F)
  
• Dimensions:
  • Width: 3.00 inches
  • Length: 6.35 inches
  • Depth: 3.92 inches
• Weight: 3.699 lbs.
  
• Country of Origin: Mexico

Material Compliance and Certifications

The Siemens ED43B070 is manufactured in accordance with UL 489 and IEC 60947-2 standards for molded case circuit breakers. It complies with RoHS substance restriction requirements (since October 10, 2008) and supports WEEE (2012/19/EU) environmental obligations where applicable. Installation should always be performed by qualified personnel in accordance with the National Electrical Code (NEC), the manufacturer's instructions, 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 installations requiring a 70 Amp, 3-pole thermal-magnetic circuit breaker