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Square D Y1B115 - Molded Case Circuit Breaker 15A 277V

Square D
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Square D Y1B115 is a 1-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in single-phase applications. It is rated for 15A continuous current at 277VAC with a 10kA interrupting capacity at 277V. This bolt-on unit weighs 1 lb and features LI (Long-Time and Instantaneous) trip functions for coordinated protection. It complies with industry standards for molded case circuit breakers and is suited for industrial panelboards and load centers requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic
  • Voltage Rating: 277V
  • Current Rating: 15A
  • Poles: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 10kA@277V
  • Phase: 1
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 1 lb
  • Family: YIB Series
  • Type: Y1B