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Westinghouse NB31000S - Molded Case Breaker 1000A 600V 3-Pole

Westinghouse
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Save $-4,390.18
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The Westinghouse NB31000S is a 3-pole molded case circuit breaker designed for primary overcurrent protection in industrial power distribution systems. It is rated for 1000A at 600V AC with a 30kA interrupting capacity at 480V, utilizing a thermal magnetic trip mechanism for long-time and instantaneous protection. The unit features a bolt-on connection, weighs 61 lb, and is constructed as part of the NB Series with a compact molded case frame. This breaker complies with applicable industry standards for safety and performance in high-current applications. It is typically used in commercial and industrial settings for protecting feeders, main switchboards, and large motor circuits.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, NB Series, Thermal Magnetic
  • Voltage Rating: 600V AC
  • Current Rating: 1000A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 30kA@480V
  • Connection: Bolt-On
  • Protection: LI - Long-Time and Instantaneous
  • Weight: 61 lb
  • Functions: Long-Time and Instantaneous Trip
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Installation Type: Fixed Mount
  • Breaker Frame: NB Series
  • Current Rating: 1000A
  • Operating Temperature Maximum Celsius: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not available
  • GTIN: Not available