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ABB S271-KS30 - Miniature Circuit Breaker 30A 1-Pole

ABB
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ABB S271-KS30 is a miniature circuit breaker designed for reliable overcurrent protection in electrical distribution systems. It is rated for 30A at 277/480VAC in a single-pole configuration, with a 10kA interrupting capacity and thermal-magnetic trip mechanism for fast, current-limiting operation. The unit weighs 2 lb, features a DIN rail mountable design with finger-safe terminals, and supports reverse feed for flexible installation. It complies with UL 1077 and CSA 22.2 standards, ensuring adherence to North American safety requirements. This breaker is suitable for industrial and commercial environments where robust circuit protection is needed.

Key Features & Specifications
  • Manufacturer: ABB
  • Item Subcategory: Molded Case
  • Weight: 2 lb
  • Part Number: S271-KS30
  • Amperage: 30A
  • Poles: 1
  • Voltage: 277/480VAC
  • Mounting Type: DIN Rail
  • Interrupt Rating: 10kA
  • Series/Frame: S2 Series
  • Protection Type: Thermal-Magnetic Trip
  • Certifications: UL 1077, CSA 22.2
  • Current Limiting: Yes
  • Fast Breaking Time: Yes