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Siemens CK3B090 - Molded Case Circuit Breaker, 90A 600V 3P

Siemens
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Siemens CK3B090 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 90A current rating and a 600V voltage rating, housed within a robust thermal-magnetic trip unit that offers both long-time and instantaneous (LI) protection functions. The breaker is constructed as a 3-pole, bolt-on unit with a substantial 35 lb weight, reflecting its durable industrial build. It complies with relevant industry standards for safety and performance, including an interrupting capacity of 100kA at 480V AC. This model is typically applied in industrial power distribution panels, switchgear, and motor control centers where robust circuit protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 600V AC
  • Current Rating: 90A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 100kA @ 480V AC
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Connection: Bolt-On
  • Weight: 35 lb
  • Family: Cordon
  • Breaker Type: CK