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ABB S203U-K10 - Miniature Circuit Breaker 10A 240V 3-Pole

ABB
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ABB S203U-K10 is a 3-pole miniature circuit breaker from the S 200 U Series, designed for branch circuit protection with LI (Long-Time and Instantaneous) functions. It is rated for 10A at 240VAC with a 10kA interrupting capacity and features a K curve thermal magnetic trip unit for moderate inrush current protection. This bolt-on unit weighs 0.72 lb, measures 92 mm H x 52.5 mm W x 71 mm D, and mounts on a 35mm DIN rail with screw connections for 18 to 4 AWG wire. It is UL 489 certified with an IP20 enclosure rating and operates in temperatures from -25 to 55 °C. Typical applications include residential, commercial, and industrial branch circuit protection.

Key Features & Specifications
  • Type: S203U-K
  • Manufacturer: ABB
  • Item Subcategory: Molded Case
  • Family: S 200 U Series
  • Weight: 0.72 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 240 VAC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10 kA
  • Phase: 3
  • Current Rating: 10 A
  • Rated Current: 10 A
  • Trip Curve: K Curve
  • Mounting Type: DIN Rail
  • Wire Size: 18 to 4 AWG
  • Enclosure Rating: IP20
  • Operating Temperature: -25 to 55 °C
  • Dimensions: 92 mm H x 52.5 mm W x 71 mm D
  • Certifications: UL 489
  • Series: S200U