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Siemens E42B045 - Molded Case Circuit Breaker 45A 2-Pole 480V

Siemens
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Siemens E42B045 is a molded case circuit breaker from the E Series, designed to provide reliable overload and short-circuit protection in low-voltage applications. This 2-pole, 45A breaker is rated for 480V AC with an interrupting capacity of 18kA at 480V, utilizing a thermal magnetic trip unit with LI (Long-Time and Instantaneous) functions for precise protection. The unit features a bolt-on mounting style, an ED frame, and a non-interchangeable trip unit, with a weight of 3 lb and a 1-phase configuration. It complies with standard industry requirements for safety and performance in demanding environments. Typical industrial applications include motor control centers, panelboards, and distribution systems requiring dependable circuit protection.

Key Features & Specifications
  • Type: Molded Case
  • Family: E Series
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 480V
  • Current Rating: 45A
  • Poles: 2
  • Phase: 1
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 18kA@480V
  • Weight: 3 lb
  • Frame: ED
  • Mounting: Bolt-On
  • Trip Unit: Non-Interchangeable
  • Wire Size: 10 to 1/0 AWG
  • Frequency: 50/60 Hz
  • Temperature Rating: 40°C