Cutler Hammer BR340ST - 3-Pole Circuit Breaker 40A 240V
Cutler Hammer BR340ST - 3-Pole Circuit Breaker 40A 240V

Cutler Hammer BR340ST - 3-Pole Circuit Breaker 40A 240V

Cutler Hammer
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The Cutler Hammer BR340ST is a three-pole, molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection for three-phase electrical systems. It features a 40A current rating and a 240V AC voltage rating, with a compact plug-in configuration measuring 3 inches in all dimensions and a weight of 1.3 lb. This thermal-magnetic breaker complies with UL 489 and Federal Specification W-C375 standards, offering a 10kA interrupting capacity at 240V for robust fault protection. Its LI (Long-time and Instantaneous) trip functions and integrated 120V shunt trip make it suitable for controlling and protecting industrial equipment, panelboards, and motor circuits.

Key Features & Specifications
  • Type: BR Series, Molded Case, Thermal Magnetic Protection with LI (Long-Time & Instantaneous) Trip Functions
  • Voltage Rating: 240V AC
  • Current Rating: 40A
  • Dimensions: 3 in x 3 in x 3 in (L x H x W)
  • Standards: UL 489, Federal Specifications Classification W-C375
  • Applications: Industrial equipment, panelboards, motor circuit protection
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 3
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • AIC rating: 10kA @ 240V
  • Connection: Plug-In
  • Additional Info: Complete with 120V shunt trip
  • Family: BR Series
  • Country of Origin: Dominican Republic
  • Weight: 1.3 lb


Product Identification
  • UPC: 786676003407
  • GTIN: 00786676003407