Square D QOU21001021 - Molded Case Breaker 100A 240V (2-Pole Bolt-On)
Square D QOU21001021 - Molded Case Breaker 100A 240V (2-Pole Bolt-On)

Square D QOU21001021 - Molded Case Breaker 100A 240V (2-Pole Bolt-On)

Square D
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Square D QOU21001021 is a 2-pole molded case circuit breaker designed for overcurrent protection in commercial and light industrial applications. It provides thermal-magnetic protection with long-time and instantaneous trip functions, rated for 100A at 240V with a 10kA interrupting capacity. This bolt-on breaker measures 4.45 inches in height, 2.25 inches in width, and 2.95 inches in depth, weighing 1.24 lb, and accepts wire sizes from AWG 12 to AWG 2/0 in aluminum or copper. It is UL listed, CSA certified, and IEC compliant, operating within a temperature range of -25°C to 70°C. Typical applications include branch circuit protection in panelboards and switchboards for single-phase systems.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • 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 - CSA - IEC
  • Applications: Branch circuit protection in panelboards and switchboards
  • Switch Type: Thermal Magnetic
  • Configuration: 2-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Amperage: 100A
  • AIC rating: 10kA@240V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: Long-Time and Instantaneous Trip
  • 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 applicable
  • Wire Size: AWG 12...AWG 2/0 aluminium/copper
  • Certification: UL listed - CSA - IEC
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: Not specified
  • Phase Connection: 1-Phase
  • Standards: UL listed - CSA - IEC
  • Compatible Frames: Not specified
  • Installation Type: Panelboard/Switchboard
  • 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: 70°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901272182
  • GTIN: 00785901272182