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Westinghouse K3090 - Molded Case 90A 3-Pole Breaker

Westinghouse
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Westinghouse K3090 is a 3-pole molded case circuit breaker from the K Series, designed for overcurrent and short circuit protection in commercial and industrial power distribution systems. It operates at 600V AC with a 90A current rating and provides LI (Long-Time and Instantaneous) protection functions through a thermal magnetic trip unit, featuring a 22kA interrupting capacity at 480V. The breaker weighs 48 lb and uses a bolt-on connection for secure mounting in panelboards, with a robust frame construction and load side lug terminals. It is built for 3-phase AC systems and complies with industry standards for reliable electrical protection. Typical applications include panelboards and distribution equipment in industrial environments requiring dependable circuit isolation.

Key Features & Specifications
  • Manufacturer: Westinghouse
  • Part Number: K3090
  • Item Subcategory: Molded Case
  • Family: K Series
  • Type: K
  • Weight: 48 lb
  • Functions: LI - Long-Time and Instantaneous
  • Voltage Rating: 600V AC
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic
  • AIC rating: 22kA@480V
  • Phase: 3
  • Current Rating: 90A
  • Features: Interchangeable Trip, Load Side Lug Terminals