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Square D QOU2151042 - Miniature Circuit Breaker 15A 2-Pole (120/240 VAC)

Square D
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Square D QOU2151042 is a 2-pole, 15-amp miniature circuit breaker designed for overload and short-circuit protection in residential and commercial load centers. It operates at 120/240 VAC with a 10 kAIC interrupting rating, and its thermal-magnetic trip mechanism provides reliable overcurrent protection. The breaker measures 4.05 in (102.87 mm) x 2.25 in (57.15 mm) x 2.95 in (74.93 mm) and weighs 1.06 lb, constructed with a compact thermoplastic housing for plug-on mounting. It complies with UL 489 and CSA C22.2 standards, ensuring safe performance in branch circuit applications. This breaker is typically used in Square D QO load centers for lighting, appliance, and general-purpose circuits, accepting wire sizes from AWG 14 to AWG 2 aluminum/copper.

Key Features & Specifications
  • Type: Miniature circuit breaker, thermal-magnetic, plug-on mounting
  • Voltage Rating: 120/240 VAC
  • Current Rating: 15 A
  • Dimensions: 4.05 in (102.87 mm) x 2.25 in (57.15 mm) x 2.95 in (74.93 mm) (H x W x D)
  • Standards: UL 489, CSA C22.2
  • Applications: Residential and commercial load centers, branch circuit protection
  • Switch Type: Toggle
  • Configuration: 2-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 4.05 in x 2.25 in x 2.95 in
  • Phase: 1-phase
  • Voltage: 120/240 VAC
  • Amperage: 15 A
  • AIC rating: 10 kAIC at 240 VAC
  • Connection: Plug-on
  • Poles: 2
  • Protection: Overload and short-circuit
  • Functions: Overcurrent protection
  • Frame Size: QO
  • Trip Type: Thermal-magnetic
  • Panel Type: QO load centers
  • Breaker Type: Miniature circuit breaker
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Copper alloy contacts
  • Panel Style: Plug-on
  • Bus Type: Tin-plated copper
  • Fuse Class: Not applicable
  • Insulation Temperature: 75°C
  • 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: Plug-on
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: 0.5 HP at 120 VAC, 1.5 HP at 240 VAC
  • Aux Contacts: Not included
  • CPT: Not applicable
  • Full Load Amps: 15 A
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 15 A
  • Full Load Amp Minimum: 15 A
  • Enclosure: Open style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: AWG 14 to AWG 2 aluminum/copper
  • Amperage Maximum: 15 A
  • Amperage Minimum: 15 A
  • Nema Rating: Not applicable
  • Switch Style: Toggle
  • Wire Size: AWG 14 to AWG 2 aluminum/copper
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Plug-on
  • Terminal Connection: Screw type
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: QO
  • Installation Type: Plug-on
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: QO
  • Current Rating: 15 A
  • 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: 40°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901891046
  • GTIN: 00785901891046