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Square D QOB330SWN - Molded Case Circuit Breaker 30A 3-Pole

Square D
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Square D QOB330SWN is a molded case circuit breaker designed for providing reliable overcurrent protection in three-phase electrical systems. It features a 30A current rating and a voltage rating of 120/240VAC, with a compact bolt-on design measuring 3.0 in (76 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D and a weight of 0.85 lb. The breaker is constructed for durability with a thermal-magnetic trip mechanism providing both long-time and instantaneous protection, and it complies with CSA and UL Listed standards for safety. Its 10kA interrupting rating at 240V and pressure plate terminals compatible with AWG 14 to AWG 8 copper or aluminum wire make it suitable for industrial control panels, HVAC systems, and commercial power distribution applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal-Magnetic Protection, Bolt-On Connection
  • Voltage Rating: 120/240VAC
  • Current Rating: 30A
  • Dimensions: 3.0 in (76 mm) H x 2.2 in (57 mm) W x 2.9 in (74 mm) D
  • Standards: CSA, UL Listed
  • Applications: Industrial Control Panels, Commercial Power Distribution, HVAC Systems
  • Switch Type: Circuit Breaker
  • Configuration: Fixed
  • Phase: 3
  • Amperage: 30A
  • AIC Rating: 10kA @ 240V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: QOB
  • Trip Type: Thermal Magnetic
  • Panel Type: Compatible with QO® and Homeline® Load Centers
  • Breaker Type: Molded Case
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Mounting: Panel Mount
  • Hz: 50/60 Hz
  • Terminal Connection: Pressure Plate
  • Wire Size: AWG 14 to AWG 8 Copper/Aluminum
  • Certification: UL Listed
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Installation Type: Fixed
  • Breaker Frame: QOB
  • Operating Temperature Maximum Celsius: 70°C


Product Identification
  • UPC: 78590136832
  • GTIN: 00785901368328