Siemens / ITE

Siemens 3VA5450-5EC31-0AA0 500 Amp 3-Pole Molded Case Circuit Breaker – Panel Mount – 480VAC & 500VDC Rated

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SKU: 3VA5450-5EC31-0AA0 GTIN/UPC: 804766792311
$2,526.03
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The Siemens 3VA5450-5EC31-0AA0 is a high-capacity molded case circuit breaker (MCCB) from the SENTRON 3VA5 series, designed for demanding commercial and industrial power distribution systems. Built on a 3VA5 600A frame, this 500A, 3-pole breaker provides reliable long-time and instantaneous (LI) protection using a TM230 thermal-magnetic trip unit with fixed thermal and adjustable magnetic settings. It is engineered for dependable performance in feeder and distribution applications where high fault protection is required.

This breaker installs into Siemens 3VA panelboards and switchboards, providing a modern upgrade path for systems using legacy LD63B500 components. It supports high-energy electrical environments and ensures stable operation under demanding load conditions.

Voltage and Rating

  • Current Rating: 500 Amps
  • Voltage Rating: 600VAC, 500VDC
  • Phase: 3-Phase
  • Frequency: 50/60 Hz
  • AIC Rating:
    • 85kA @ 240VAC
    • 35kA @ 480VAC
    • 18kA @ 600VAC

Key Specifications

  • Breaker Type: Molded Case Circuit Breaker (MCCB)
  • Series: SENTRON 3VA5
  • Family: 3VA
  • Part Number: 3VA5450-5EC31-0AA0
  • Frame Size: 3VA5 600A Frame
  • Number of Poles: 3-Pole
  • Mounting Style: Panel Mount
  • Terminal Type: Lugs (sold separately where specified)
  • Trip Technology: Thermal Magnetic
  • Trip Unit: TM230
  • Trip Function Code: LI
  • Trip Function: Long-Time and Instantaneous Protection
  • Trip Adjustability: Fixed Thermal, Adjustable Magnetic
  • Protection Type: Thermal Magnetic

Technical Specifications

  • Breaking Capacity Class: Class M (medium interrupting capacity)
  • Application: Industrial and Commercial Power Distribution
  • Compatibility: Siemens 3VA Panelboards, Switchboards, Motor Control Centers
  • Construction Features: HACR Rated, Current Limiting, Reverse Feed

Standards and Approvals

  • Standards: IEC 60947-2, UL 489
  • Approvals: UL, CSA, CE, cULus, DNV, EAC, GL, Lloyd’s, RCM, VDE, ABS

Product Data

  • Manufacturer: Siemens
  • Series: SENTRON 3VA5
  • Part Number: 3VA5450-5EC31-0AA0

Applications

  • Industrial Power Distribution Systems
  • Commercial Electrical Installations
  • Panelboards and Switchboards
  • Motor Control Centers
  • Feeder Circuit Protection
  • Branch Circuit Protection
  • High Fault Current Applications
  • Heavy Electrical Load Distribution
  • Critical Infrastructure Systems
  • Retrofit and Upgrade Projects
  • Type Circuit Breakers
  • Vendor Siemens / ITE
  • Brand Siemens

Returns are easy

You may return items within 30 days of delivery for a refund.

FREE Shipping on orders over $149.

My Circuit Breakers offers one to five day delivery in the United States. The variation depends on the chosen shipping speed and the warehouse location for the product(s).

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We strive to ship out your items within one business day.

In rare circumstances, My Circuit Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

My Circuit Breakers provides a comprehensive 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer). Extended warranties are available upon request.