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Siemens E41B040 - Molded Case Circuit Breaker, 40A 1P

Siemens
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Siemens E41B040 is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase industrial and commercial electrical systems. It features a 40A current rating and a 277V AC voltage rating, engineered within a compact, 2 lb bolt-on frame for secure panel mounting. This thermal magnetic breaker offers combined long-time and instantaneous (LI) trip functions and complies with industry standards for safety and performance, including an interrupting capacity of 22kA at 277V. Its typical applications include protecting feeder and branch circuits in control panels, HVAC systems, and lighting distribution.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 277V AC
  • Current Rating: 40A
  • Poles: 1
  • Phase: 1
  • AIC Rating: 22kA @ 277V
  • Functions: LI (Long-Time and Instantaneous)
  • Family/Series: E Series, Type E
  • Weight: 2 lb
  • Protection: Thermal Magnetic
  • Connection: Bolt-On


Product Identification
  • Manufacturer Part Number: E41B040