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Cutler Hammer BR240ST - 2-Pole 40A Circuit Breaker (10kA AIC, 240V)

Cutler Hammer
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Cutler Hammer BR240ST is a molded case circuit breaker designed for providing reliable overcurrent protection in single-phase 240V AC electrical systems. It features a 40A current rating and a 10kA interrupting capacity at 240V, housed in a compact 3.25" x 3" x 3" plug-in unit weighing 1 lb. The breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous protection, is certified to UL 489 standards, and operates within a temperature range of -25 to 70 °C. It is engineered for use in industrial and commercial panelboards, compatible with copper or aluminum wiring from #14 to 4 AWG, and includes an integrated 120V shunt trip for remote tripping capability.

Key Features & Specifications
  • Type: BR Series, Molded Case, Thermal-Magnetic Protection with Long Time and Instantaneous Trip Functions
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Dimensions: 3.25 in (L) x 3 in (H) x 3 in (W)
  • Standards: UL 489, Federal Specifications Classification W-C375
  • Applications: Industrial and Commercial Electrical Distribution
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 1
  • AIC Rating: 10kA @ 240V AC
  • Connection: Plug-In
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Wire Size: #14 to 4 AWG CU/AL
  • Certification: UL 489
  • Additional Info: Includes 120V Shunt Trip
  • Weight: 1 lb


Product Identification
  • UPC: 786676000321
  • GTIN: 00786676000321