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Siemens BL1-040 - Molded Case Circuit Breaker 40A 120V

Siemens
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Siemens BL1-040 Circuit Breaker is a 1-pole molded case circuit breaker designed for overcurrent protection in residential and light commercial applications. It features a thermal magnetic trip mechanism with LI (Long-Time and Instantaneous) protection functions, rated for 120V AC and 40A continuous current. This plug-in type breaker weighs 1 lb and is part of the Blue-Line family, offering a 10kA interrupting capacity at 120V for reliable fault clearing. It complies with industry standards for safety and performance in single-phase electrical systems. Typical applications include branch circuit protection in load centers and panelboards.

Key Features & Specifications
  • Type: Molded Case, Thermal Magnetic, Plug-In
  • Voltage Rating: 120V AC
  • Current Rating: 40A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Protection: LI - Long-Time and Instantaneous
  • Connection: Plug-In
  • Family: Blue-Line
  • Weight: 1 lb
  • Functions: LI - Long-Time and Instantaneous


Product Identification
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