• HEB3B045B
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SIEMENS

HEB3B045B - 45Amp Circuit Breaker

HEB3B045B - 45Amp Circuit Breaker

$1,714.28 USD
$1,714.28 USD
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HEB3B045B - 45Amp Circuit Breaker

The Siemens HEB3B045B is a 45 Amp, 3-pole molded case circuit breaker used in compatible HEB (EG) frame low-voltage panelboards. When you're replacing an existing breaker, the details are what determine whether it is the right match. The frame style, number of poles, amp rating, voltage rating, and lug configuration all need to match the equipment already in place. This model includes a thermal-magnetic trip unit and load-side lugs (TA1EG10) for installations requiring this specific HEB frame configuration.

Key Features and Benefits

  • Siemens HEB (EG Frame) molded case circuit breaker
  • 45 Amp current rating
  • 3-pole configuration for three-phase systems
  • Thermal-magnetic trip unit
  • 480 VAC rating
  • 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 applications
  • UL Listed
  • Built to last for use in existing electrical equipment

Technical Specifications

  • Manufacturer: Siemens
  • Catalog Number: HEB3B045B
  • Product Type: Molded Case Circuit Breaker
  • Frame: HEB (EG Frame)
  • Poles: 3
  • Current Rating: 45 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: 2.557 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

Where It Works Best

The Siemens HEB3B045B is commonly found in commercial buildings, industrial facilities, and institutional electrical systems that use HEB (EG) frame panelboards. It is a good fit for maintenance and replacement work where the existing breaker specifications need to remain consistent.


Use of Original Equipment Manufacturer (OEM) trademarks, names, and logos is for informational and identification purposes only. This does not imply any affiliation, sponsorship, endorsement, or approval by the original equipment manufacturer. CIRCUIT BREAKER SUPERSTORE® is an independent reseller and is not an authorized distributor, affiliate, or representative of any manufacturer. Manufacturer warranties do not apply unless expressly stated. All trademarks and registered trademarks are the property of their respective owners.

Siemens®, I-T-E®, and Murray® are registered trademarks of Siemens AG. Products sold are surplus, used, or refurbished and are NOT supplied by Siemens AG or its affiliates.

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