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Allen-Bradley 1492-SP1C040 - Molded Case Circuit Breaker 4A 277V

Allen-Bradley
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The Allen-Bradley 1492-SP1C040 is a 1-pole molded case circuit breaker from the Bulletin 1492-SP family, designed for branch circuit protection in industrial control panels. It features a thermal magnetic protection mechanism with LI (Long-Time and Instantaneous) functions, rated for 277V AC, 4A continuous current, and an interrupting capacity of 10kA at 277V. This compact unit weighs 0.22 lb and utilizes a feed-thru connection style, operating on a single-phase system. The breaker complies with UL 489 and CSA standards for overcurrent protection. Typical applications include motor control centers, panelboards, and general industrial power distribution systems where reliable short-circuit and overload protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic
  • Voltage Rating: 277V AC
  • Current Rating: 4A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 10kA@277V
  • Connection: Feed-Thru
  • Protection: LI - Long-Time and Instantaneous
  • Weight: 0.22 lb
  • Family: Bulletin 1492-SP
  • Item Subcategory: Molded Case