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Siemens MD63B800L - Molded Case Circuit Breaker 800A 3-Pole

Siemens
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Siemens MD63B800L is a Sentron Series Type MD molded case circuit breaker designed for low voltage power distribution with thermal magnetic protection. This 3-pole, 3-phase unit delivers 800A at 600VAC/250VDC with a 50kA interrupting capacity at 480VAC, utilizing LI (Long-Time and Instantaneous) trip functions for coordinated overcurrent and short-circuit protection. The MD Frame breaker measures 18.898 x 11.811 x 9.843 inches and weighs 61.619 lb, featuring a feed-thru connection and a molded case construction. It complies with UL 489 and IEC 60947-2 standards for industrial and commercial installations. Typical applications include switchboards, panelboards, and motor control centers requiring high breaking capacity in demanding environments.

Key Features & Specifications
  • Type: Molded Case
  • Family: Sentron Series
  • Type: MD
  • Frame Size: MD Frame
  • Current Rating: 800 A
  • Voltage Rating: 600 VAC / 250 VDC
  • Poles: 3
  • Phase: 3
  • Interrupt Rating: 50 kA at 480V
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Connection: Feed-Thru
  • Dimensions: 18.898 x 11.811 x 9.843 inch
  • Weight: 61.619 lb
  • Country of Origin: Mexico
  • Certifications: UL 489, IEC 60947-2


Product Identification
  • UPC: 783643011755
  • GTIN: 00783643011755