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Square D QOM40L - Miniature Circuit Breaker 40A 120/240V

Square D
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The Square D QOM40L is a miniature circuit breaker designed for overload and short-circuit protection in residential and light commercial distribution equipment. It operates at a voltage rating of 120/240V and supports wire sizes from AWG 12 to AWG 2/0 for both copper and aluminum conductors. This unit weighs 1.28 lb and features a robust construction with a temperature rating of -13 to 158 °F (-25 to 70 °C). It complies with industry standards for safety and performance, incorporating long time and instantaneous trip functions. Typical applications include branch circuit protection in load centers and panelboards.

Key Features & Specifications
  • Type: Miniature Circuit Breaker
  • Voltage Rating: 120/240V
  • Current Rating: 40A
  • Dimensions: Not specified
  • Standards: Not specified
  • Applications: Overload and short-circuit protection in residential and light commercial distribution
  • Switch Type: Not specified
  • Configuration: Not specified
  • Coil Voltage Maximum: Not specified
  • Temp Rating: -13 to 158 °F (-25 to 70 °C)
  • Shipping Dimensions: Not specified
  • Phase: Not specified
  • Voltage: 120/240V
  • Amperage: 40A
  • AIC rating: Not specified
  • Connection: Not specified
  • Poles: Not specified
  • Protection: Long Time and Instantaneous Trip
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: Not specified
  • Trip Type: Not specified
  • Panel Type: Not specified
  • Breaker Type: Miniature
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not specified
  • 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: Not specified
  • Hz: Not specified
  • Coil Material: Not specified
  • 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: AWG 12 to AWG 2/0, Copper/Aluminum
  • Certification: Not specified
  • Circuit Breaker Mounting Style: Not specified
  • Terminal Connection: Not specified
  • Frequency Rating: Not specified
  • Phase Connection: Not specified
  • Standards: Not specified
  • Compatible Frames: Not specified
  • Installation Type: Not specified
  • Item QTY: Not specified
  • Nema Starter Size: Not specified
  • Breaker Frame: Not specified
  • Current Rating: 40A
  • Reverse Standoff Voltage: Not specified
  • Watts: Not specified
  • Peak Pulse Current: Not specified
  • Breakdown Voltage (MIN VBR@IT ) (V): Not specified
  • Breakdown Voltage (VBR@IT) (V): Not specified
  • Polarity: Not specified
  • Operating Temperature Maximum Celsius: 70 °C
  • Max Clamp Voltage: Not specified
  • On-State Current: Not specified


Product Identification
  • UPC: 785901114857
  • GTIN: 00785901000000