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** Picture is for identification purposes only and may not represent the actual amperage of the product listed **

MD63F800 - 800Amp Max. *Frame Only*

  • 800 Amp
  • 25k @ 600VAC; 50k @ 480VAC; 65k @ 240VAC
  • 3 Pole
Circuit BreakersSKU: MD63F800

Purchase Options:

MD63F800 - 800Amp Max. *Frame Only* Description

MD63F800 - 800Amp Max. *Frame Only*

When you're working with large electrical distribution systems, choosing the correct replacement circuit breaker is all about matching the existing equipment specifications. The Siemens MD63F800 SENTRON molded case circuit breaker is an 800 Amp, 3-pole breaker designed for applications where the proper frame type, trip characteristics, and electrical ratings need to align with the original installation. Built around the MD frame platform, this breaker provides a practical solution for commercial and industrial power distribution systems requiring dependable overcurrent protection.

Key Features and Benefits

  • Siemens SENTRON MD frame molded case circuit breaker
  • 800 Amp current rating
  • Three-pole configuration
  • Thermal-magnetic trip unit for overload and short-circuit protection
  • Rated for 600VAC applications
  • Includes line and load side lugs
  • Supports copper and aluminum conductors within specified wire ranges
  • Meets UL 489 and IEC 60947-2 standards
  • Designed for replacement and maintenance applications
  • Helps maintain existing electrical distribution equipment
  • Built to last in commercial and industrial environments

Technical Specifications

  • Catalog Number: MD63F800
  • Manufacturer: Siemens
  • Product Family: SENTRON MD6
  • Product Type: Molded Case Circuit Breaker
  • Frame Type: MD
  • Trip Unit Type: Thermal-Magnetic
  • Amperage Rating: 800 Amps
  • Number of Poles: 3
  • Voltage Rating: 600VAC
  • Interrupt Rating:
    • 25kAIC at 600VAC
    • 50kAIC at 480VAC
  • Connection Type: Line and Load Side Lugs
  • Terminal Type: TA3K500
  • Wire Range: 1/0 AWG to 500 kcmil (Copper/Aluminum)
  • Dimensions: 9.00 in. W × 16.00 in. H × 6.00 in. D
  • Approximate Weight: 48.5 lbs.
  • Standards: UL 489 / IEC 60947-2

Material Compliance and Certifications

The Siemens MD63F800 SENTRON molded case circuit breaker meets UL 489 and IEC 60947-2 standards for molded case circuit breakers. It is designed for use in compatible electrical distribution equipment and complies with applicable RoHS substance restriction requirements. Installation should follow the National Electrical Code (NEC), applicable local requirements, and proper electrical safety practices. Installation and maintenance should be performed by qualified electrical personnel.

Where It Works Best

  • Commercial electrical distribution systems
  • Industrial facilities
  • Manufacturing plants
  • Large electrical distribution panels
  • Power equipment protection applications
  • Three-phase electrical systems requiring high-amperage protection
  • Maintenance and replacement projects
  • Existing Siemens SENTRON MD frame installations
  • Applications requiring an 800 Amp, 3-pole, 600VAC molded case circuit breaker

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.

Specifications

  • Width:9.0
  • Height:16.0
  • Depth:6.0
  • Poles:3
  • Amperes:800
  • A.I.C. Rating & Volts:25k @ 600VAC; 50k @ 480VAC; 65k @ 240VAC
  • Type:MD6
  • Accessories:MD63T500; MD63T600; MD63T700; MD63T800
  • Approx Dimensions:9.00"W x 16.00"L x 6.00"D
  • Additional Notes:30kAIC@250vdc (for 2-pole applications), Molded Case Circuit Breaker FRAME ONLY

Returns are easy

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

FREE ground shipping on breaker orders over $100 and all other items with orders over $500.

Shipping charges are Prepaid and Allowed on UPS Ground orders for all other products on orders over $500.00, again only when shipping within the lower 48 continental United States, provided the product(s) can safely ship UPS Ground.

If the product cannot safely ship via UPS Ground, or is too heavy to ship UPS Ground, then the product will be shipped via freightliner at buyer's expense.

CIRCUIT BREAKER SUPERSTORE® 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).

Same Day Shipping

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

In rare circumstances, CIRCUIT BREAKER SUPERSTORE® may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

CIRCUIT BREAKER SUPERSTORE® provides a limited 1-year warranty on both new and reconditioned products. Rest assured, all products are authentic OEM (original equipment manufacturer).

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