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Square D QOB3305237 - Standard 30A 3-Pole Breaker (120/240VAC)

Square D
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The Square D QOB3305237 is a standard molded case circuit breaker from the QOB Series, designed to provide thermal magnetic protection for electrical circuits. This three-pole breaker operates at a voltage rating of 120/240VAC with a 30A current rating and a 10kA interrupting capacity at 120V, utilizing LI (Long-Time and Instantaneous) trip functions. It features a bolt-on connection with pressure plate terminals, accommodating wire sizes from 14 AWG to 8 AWG (Cu/Al), and measures 3.0 in (76 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) with a weight of 0.83 lb. The breaker is UL Listed and CSA certified, making it suitable for industrial applications requiring reliable overcurrent protection in three-phase systems.

Key Features & Specifications
  • Type: QOB Molded Case Circuit Breaker
  • Voltage Rating: 120/240VAC
  • Current Rating: 30A
  • Dimensions: 3.0 in (76 mm) x 2.2 in (57 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Standards: CSA, UL Listed
  • Applications: Industrial three-phase systems
  • Switch Type: Standard
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 120/240VAC
  • Amperage: 30A
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: Not specified
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Standard
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Min. Wire Size 14 AWG (Cu/Al) Max. Wire Size 8 AWG (Cu/Al)
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Bolt-On
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 30A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Standard
  • Wire Size: 14 AWG to 8 AWG (Cu/Al)
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Pressure Plate
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: CSA, UL Listed
  • Compatible Frames: Not specified
  • Installation Type: Bolt-On
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not specified
  • Current Rating: 30A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • Peak Pulse Current: Not applicable
  • Breakdown Voltage (MIN VBR@IT ) (V): Not applicable
  • Breakdown Voltage (VBR@IT) (V): Not applicable
  • Polarity: Not applicable
  • Operating Temperature Maximum Celsius: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901090229
  • GTIN: 00785901090229