HED42B045 - 45Amp Circuit Breaker

HED42B045 - 45Amp Circuit Breaker

The Siemens HED42B045 is a 45 Amp, two-pole molded case circuit breaker designed for compatible Siemens SENTRON ED frame electrical distribution systems. Built for your applications where maintaining the correct breaker specifications is important, this circuit breaker provides a matching solution for replacement and maintenance needs. Its thermal magnetic trip unit combines overload and short-circuit protection in a single breaker design, helping support the intended operation of compatible electrical equipment.

Key Features and Benefits

• 45 Amp two-pole Siemens ED frame circuit breaker
• Thermal magnetic trip unit for overload and short-circuit protection
• 480V voltage rating
• Load-side lug connections
• Supports #10–1/0 AWG copper conductors
• Supports #10–1/0 AWG aluminum conductors
• Siemens SENTRON molded case circuit breaker design
• Meets UL 489 and IEC 60947-2 standards

Technical Specifications

• Catalog Number: HED42B045
  
• Product Type: Molded case circuit breaker
  
• Frame Type: ED Frame
  
• Amperage Rating: 45 Amps
  
• Voltage Rating: 480V
  
• Poles: 2
  
• Trip Unit Type: Thermal magnetic
  
• Interrupt Rating: 42kAIC at 480V
  
• Terminal Configuration: Load lugs only
  
• Wire Range: 10–1/0 AWG CU/AL
  
• Dimensions: 2 in W x 6.35 in H x 3.92 in D
  
• Weight: 2.8 lb
  
• UPC: 783643210004
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens HED42B045 is designed to meet applicable UL 489 and IEC 60947-2 standards for molded case circuit breakers.

Before installation, verify that the breaker ratings, frame type, voltage requirements, pole configuration, and conductor specifications match the existing application.

Where It Works Best

• Siemens ED frame electrical distribution equipment
• 480V two-pole circuit protection applications
• Commercial and industrial electrical systems
• Maintenance and replacement projects involving compatible equipment