Square D QOB240-1021 - Molded Case 40A 2-Pole 120/240VAC
Square D QOB240-1021 - Molded Case 40A 2-Pole 120/240VAC

Square D QOB240-1021 - Molded Case 40A 2-Pole 120/240VAC

Square D
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Square D QOB240-1021 is a QOB Series molded case circuit breaker designed to provide overcurrent protection for electrical circuits. It is rated for 120/240VAC with a 10kA interrupting capacity at 120V and a 2-pole configuration, supporting single-phase systems. This bolt-on breaker features a pressure plate terminal connection, weighs 7 lb, and is constructed for reliable performance in industrial environments. It is CSA certified and UL Listed, ensuring compliance with safety and performance standards. Typical applications include branch circuit protection in commercial and light industrial power distribution panels.

Key Features & Specifications
  • Type: Molded Case, QOB Series
  • Voltage Rating: 120/240VAC
  • Current Rating: 40A
  • Dimensions: Standard QOB frame size
  • Standards: CSA, UL Listed
  • Applications: Branch circuit protection in commercial/industrial panels
  • Switch Type: Thermal-magnetic
  • Configuration: 2-pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: 40°C
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Voltage: 120/240VAC
  • Amperage: 40A
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 2
  • Protection: Overcurrent
  • Functions: Circuit interruption
  • Frame Size: QOB
  • Trip Type: Thermal-magnetic
  • Panel Type: QO load centers
  • Breaker Type: QOB
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Bolt-on
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Bolt-on
  • Hz: 60 Hz
  • 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 specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 40A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Pressure Plate
  • Frequency Rating: 60 Hz
  • Phase Connection: Single-phase
  • Standards: CSA, UL
  • Compatible Frames: QO
  • Installation Type: Panel mount
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: QOB
  • Current Rating: 40A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not specified
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 78590149432
  • GTIN: 00785901494324