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Square D 37299993 - 3-Pole Molded Case Circuit Breaker 250A 600V

Square D
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Square D 37299993 is a molded case circuit breaker designed to provide reliable overcurrent protection for industrial power distribution systems. It features a 600V AC voltage rating and a 250A current rating, housed within a durable, compact frame constructed with high-strength thermoplastic for electrical insulation and mechanical durability. This breaker complies with UL 489 standards for circuit breaker enclosures and is engineered for use in panelboards, switchboards, and motor control centers. Its typical applications include protecting feeders, branch circuits, and equipment in commercial and industrial facilities, ensuring system safety and continuity.

Key Features & Specifications
  • Type: Thermal-magnetic molded case circuit breaker with a fixed thermal trip unit and instantaneous magnetic trip
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: Compact frame size; specific dimensions per manufacturer drawings
  • Standards: UL 489 Listed
  • Applications: Feeder and branch circuit protection in industrial panelboards and switchgear
  • Switch Type: Integral handle for ON/OFF/reset operation
  • Configuration: Fixed mounted
  • Phase: 3-pole
  • AIC Rating: 65kA at 240V AC, 35kA at 480V AC, 18kA at 600V AC
  • Connection: Lug or bus connection
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Frame Size: I-Line or equivalent compact industrial frame
  • Trip Type: Thermal-magnetic
  • Breaker Type: Molded Case Circuit Breaker (MCCB)
  • Mounting: Fixed, panel-mounted
  • Hz: 50/60 Hz
  • Terminal Connection: Mechanical lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489
  • Installation Type: Fixed
  • Item QTY: 1
  • Breaker Frame: Compact industrial frame
  • Operating Temperature Maximum Celsius: 40°C (104°F) ambient
  • Weight: 7 lb


Product Identification
  • Manufacturer Part Number: 37299993
  • Manufacturer: Square D
  • Item Subcategory: Parts & Accessories