Square D QOU190 - Molded Case 90A 120V (Single-Pole)
Square D QOU190 - Molded Case 90A 120V (Single-Pole)

Square D QOU190 - Molded Case 90A 120V (Single-Pole)

Square D
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Square D QOU190 is a 90A molded case circuit breaker designed for overcurrent protection in commercial and industrial power distribution systems. This single-pole, bolt-on unit operates at 120V with a 10kA interrupting capacity, utilizing thermal magnetic protection for both long-time and instantaneous fault response. The compact breaker measures 4.45 in x 0.75 in x 2.95 in (113.03 mm x 19.05 mm x 74.93 mm) and weighs 0.425 lb, accepting wire sizes from AWG 12 to AWG 2/0 in aluminum or copper. It complies with IEC, UL listed, and CSA standards, ensuring reliable performance in panelboards and load centers. Typical applications include branch circuit protection in industrial control panels, lighting systems, and motor control centers where precise overcurrent protection is required.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker
  • Voltage Rating: 120V
  • Current Rating: 90A
  • Dimensions: 4.45 in (113.03 mm) x 0.75 in (19.05 mm) x 2.95 in (74.93 mm) (Height x Width x Depth)
  • Standards: IEC - UL listed - CSA
  • Applications: Branch circuit protection in industrial control panels, lighting systems, motor control centers
  • Switch Type: Bolt-On
  • Configuration: Single-Pole
  • Coil Voltage Maximum: N/A
  • Temp Rating: N/A
  • Shipping Dimensions: N/A
  • Phase: 1
  • Voltage: 120V
  • Amperage: 90A
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: N/A
  • Trip Type: Thermal Magnetic
  • Panel Type: N/A
  • Breaker Type: Molded Case
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: N/A
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: N/A
  • Insulation Temperature: N/A
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: Bolt-On
  • Hz: N/A
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: AWG 12...AWG 2/0 aluminium/copper
  • Amperage Maximum: 90A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: Bolt-On
  • Wire Size: AWG 12...AWG 2/0 aluminium/copper
  • Certification: IEC - UL listed - CSA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: N/A
  • Phase Connection: 1
  • Standards: IEC - UL listed - CSA
  • Compatible Frames: N/A
  • Installation Type: Bolt-On
  • Item QTY: N/A
  • Nema Starter Size: N/A
  • Breaker Frame: N/A
  • Current Rating: 90A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: N/A
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 785901867309
  • GTIN: 00785901175919