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ABB ST203M-K63 - Molded Case 63A 600V AC Circuit Breaker

ABB
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The ABB ST203M-K63 is a molded case circuit breaker designed for primary overcurrent and short-circuit protection in industrial power distribution systems. This three-pole device is rated for 63 amps at 600 volts AC, providing reliable interruption of fault currents with a high AIC rating suitable for demanding environments. Constructed with a compact frame size and a thermal-magnetic trip mechanism, it weighs 5.19 lb and features a robust metal enclosure for durability in panelboard installations. The breaker complies with UL and IEC standards, ensuring safe operation in motor control centers, switchboards, and branch circuit protection applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 600V AC
  • Current Rating: 63A
  • Poles: 3
  • Trip Type: Thermal-Magnetic
  • Frame Size: Compact
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Line and Load
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-Phase
  • Standards: UL, IEC
  • Applications: Industrial power distribution, motor protection, branch circuits
  • Manufacturer: ABB
  • Item Subcategory: Molded Case
  • Weight: 5.19 lb


Product Identification
  • GTIN: 016779025182