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Siemens QJ3B090 - Molded Case 90A 3-Pole 240V

Siemens
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Siemens QJ3B090 is a three-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. It is rated for 240V AC, 90A continuous current, and a 10kA interrupting capacity at 240V, with LI (Long-Time and Instantaneous) trip functions for coordinated fault clearing. The unit features a bolt-on connection, weighs 4 lb, and is constructed with a compact QJ frame for panelboard installation. It complies with UL 489 standards for molded case circuit breakers and is suitable for 3-phase commercial and light industrial applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QJ Series, Thermal Magnetic
  • Voltage Rating: 240V AC
  • Current Rating: 90A
  • Poles: 3
  • Connection: Bolt-On
  • Protection: Thermal Magnetic (LI - Long-Time and Instantaneous)
  • AIC Rating: 10kA@240V
  • Phase: 3
  • Weight: 4 lb
  • Functions: LI - Long-Time and Instantaneous
  • Family: QJ Series
  • Item Subcategory: Molded Case
  • Type: QJ


Product Identification
  • Manufacturer: Siemens