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Square D QOU21001042 - Molded Case Circuit Breaker 100A 240V

Square D
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The Square D QOU21001042 is a molded case circuit breaker from Schneider Electric's QOU Series, designed to provide overcurrent protection through its LI (Long-Time and Instantaneous) trip functions. This 2-pole, 1-phase unit is rated for 240V AC and 100A, with a 10kA interrupting capacity at 240V, and features a thermal-magnetic protection mechanism for reliable fault response. The breaker measures 4.45 in (113.03 mm) in height, 2.25 in (57.15 mm) in width, and 2.95 in (74.93 mm) in depth, weighing 1.24 lb, and utilizes a bolt-on connection with wire size compatibility from AWG 12 to AWG 2/0 for both aluminum and copper conductors. It is UL listed, IEC certified, and CSA approved, making it suitable for industrial applications requiring robust circuit protection in panelboards and load centers.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, QOU Series, Thermal Magnetic
  • Voltage Rating: 240V
  • Current Rating: 100A
  • Dimensions: 4.45 in (113.03 mm) x 2.25 in (57.15 mm) x 2.95 in (74.93 mm) (Height x Width x Depth)
  • Standards: UL listed, IEC, CSA
  • Applications: Industrial panelboards and load centers
  • Switch Type: Circuit Breaker
  • Configuration: 2-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Amperage: 100A
  • AIC rating: 10kA@240V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: Not specified
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • 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 applicable
  • Full Load Amps: Not specified
  • Dist Voltage: Not applicable
  • 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: AWG 12...AWG 2/0 aluminium/copper
  • Amperage Maximum: 100A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: AWG 12...AWG 2/0 aluminium/copper
  • Certification: UL listed, IEC, CSA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: Not specified
  • Phase Connection: 1-Phase
  • Standards: UL, IEC, CSA
  • Compatible Frames: Not specified
  • Installation Type: Bolt-On
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not specified
  • Current Rating: 100A
  • 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: 078590111947
  • GTIN: 00785901119470