HEB3B090B - 90Amp Circuit Breaker

HEB3B090B - 90Amp Circuit Breaker

The Siemens HEB3B090B is a 90 Amp, 3-pole molded case circuit breaker for compatible HEB (EG Frame) low-voltage panelboard applications. When you're replacing a breaker in an existing electrical system, the best results come from matching the original specifications rather than changing the installation. The frame style, number of poles, amp rating, voltage rating, and lug configuration all play an important role in confirming the correct fit. This model includes a thermal-magnetic trip unit and load-side lugs (TA1EG10) for applications requiring this specific HEB frame arrangement.

Key Features and Benefits

• Siemens HEB (EG Frame) molded case circuit breaker
• 90 Amp current rating
• 3-pole configuration for three-phase applications
• Thermal-magnetic trip unit
• Rated for 480 VAC applications
• Interrupting ratings:
  • 65kAIC @ 480 VAC
  • 25kAIC @ 600Y/347 VAC
• Load-side lugs included (TA1EG10)
• Accepts 8 AWG to 1/0 AWG copper or aluminum conductors
• Matches the form, fit, and function of compatible HEB frame installations
• UL Listed
• Built to last for existing electrical equipment

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number: HEB3B090B
  
• Product Type: Molded Case Circuit Breaker
  
• Frame: HEB (EG Frame)
  
• Poles: 3
  
• Current Rating: 90 Amps
  
• Voltage Rating: 480 VAC
  
• Trip Unit: Thermal-Magnetic
  
• Interrupting Rating:
  65kAIC @ 480 VAC
  25kAIC @ 600Y/347 VAC
• Terminal Configuration: Load-side lugs (TA1EG10)
  
• Wire Range: 8 AWG to 1/0 AWG Copper/Aluminum
  
• Dimensions: 3" W × 5.5" H × 3" D
  
• Weight: 2.447 lb
  
• Country of Origin: Dominican Republic
  

Material Compliance and Certifications

• UL Listed
• Compatible with copper and aluminum conductors
• ECCN: EAR99
• Commodity Code: 8536200040
• WEEE Category 5
• Not classified as dangerous goods
• RoHS compliance information not available
  

Where It Works Best

The Siemens HEB3B090B is commonly used in commercial buildings, industrial facilities, and institutional electrical distribution systems that utilize compatible HEB (EG Frame) panelboards. It is suited for maintenance and replacement projects where the existing breaker needs to match the original equipment specifications.