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Siemens LGB3K040B - Molded Case Circuit Breaker 40A 600V 3P

Siemens
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Siemens LGB3K040B is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in industrial power distribution systems. It features a 40A current rating and a 600V voltage rating, housed within a compact GB2 frame measuring 2.87 x 2.961 x 4.988 inches and weighing 2.756 lb. This three-pole, bolt-on breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous protection, is certified to UL, CSA, IEC, and NOM standards, and operates effectively in temperatures from -25°C to 70°C. Its 65kA interrupting capacity at 480V makes it suitable for protecting feeders and branch circuits in commercial and industrial panels, compatible with copper or aluminum conductors sized from 8 AWG to 1/0 AWG.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • Dimensions: 2.87" x 2.961" x 4.988" (72.9mm x 75.2mm x 126.7mm)
  • Standards: UL, CSA, IEC, NOM
  • Applications: Industrial Feeder and Branch Circuit Protection
  • Switch Type: Circuit Breaker
  • Configuration: Bolt-On
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3-Phase
  • AIC Rating: 65kA @ 480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: GB2 Frame
  • Wire Size: 8 AWG to 1/0 AWG, Copper or Aluminum
  • Certification: UL, CSA, IEC, NOM
  • Family: GB2 Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 804766340376
  • GTIN: 00804766340376