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Square D 999340 - Molded Case 40A 3-Pole 600V

Square D
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Save $-406.28
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  • In stock, ready to ship
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The Square D 999340 is a 40A, 3-pole molded case circuit breaker from the 99 Series, designed for thermal-magnetic overcurrent protection in industrial power distribution systems. It operates at a maximum voltage rating of 600V AC with a 10kA interrupting capacity at 600V, providing long-time and instantaneous (LI) trip functions for reliable fault clearing. This bolt-on breaker weighs 8 lb and features a compact, three-phase construction suited for panelboard mounting. It complies with industry standards for molded case circuit breakers, ensuring robust performance in demanding environments. Typical applications include motor control centers, lighting panels, and branch circuit protection in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case, 99 Series, Type 999
  • Voltage Rating: 600V AC
  • Current Rating: 40A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC Rating: 10kA@600V
  • Phase: 3
  • Functions: LI - Long-Time and Instantaneous
  • Weight: 8 lb


Product Identification
  • UPC: Not specified
  • GTIN: Not specified