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Square D QOB3301021 - 3-Pole Circuit Breaker 30A 120/240VAC

Square D
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Square D QOB3301021 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 30A current rating and a 120/240VAC voltage rating, housed within a compact 3.0 in x 3.0 in x 2.9 in (76 mm x 76 mm x 74 mm) bolt-on unit with a thermal magnetic trip mechanism for both long-time and instantaneous protection. This shunt trip breaker is CSA and UL Listed, ensuring compliance with industry safety standards for use in Square D NQOD panelboards. Its construction supports copper or aluminum wiring from AWG 14 to AWG 8 and operates effectively within a temperature range of -25°C to 70°C (-13°F to 158°F).

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Shunt Trip, Thermal Magnetic Protection
  • Voltage Rating: 120/240VAC
  • Current Rating: 30A
  • Frame Size: 100A/QO
  • Poles: 3
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On, Pressure Plate Terminal
  • Wire Size: AWG 14 to AWG 8 (Copper/Aluminum)
  • Dimensions: 3.0 in H x 3.0 in W x 2.9 in D (76 mm x 76 mm x 74 mm)
  • Weight: 1.2 lb
  • Phase: 3
  • Functions: LI (Long-Time and Instantaneous)
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Standards: CSA, UL Listed
  • Panel Type: Square D NQOD Panelboards
  • Family: QOB Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901494409
  • GTIN: 00785901494409