Square D QOB1251021 - 1-Pole 25A Molded Case Breaker (Bolt-On)
Square D QOB1251021 - 1-Pole 25A Molded Case Breaker (Bolt-On)

Square D QOB1251021 - 1-Pole 25A Molded Case Breaker (Bolt-On)

Square D
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The Square D QOB1251021 is a single-pole, bolt-on molded case circuit breaker from the QOB Series, designed to provide thermal-magnetic overcurrent protection for branch circuits. It is rated for 25A at 120/240VAC with a 10kA interrupting capacity at 120V, utilizing a pressure plate terminal connection and offering LI (Long-Time and Instantaneous) protection functions. This compact breaker measures 3.0 in x 1.5 in x 2.9 in (76 mm x 38 mm x 74 mm) and weighs 0.659 lb, featuring a bolt-on mounting style for secure panel installation. It is UL Listed and CSA certified, complying with industry safety standards for commercial and light industrial electrical distribution systems. Typical applications include protecting lighting, receptacle, and general-purpose loads in load centers and panelboards.

Key Features & Specifications
  • Type: QOB Molded Case Circuit Breaker, Thermal Magnetic, Bolt-On
  • Voltage Rating: 120/240VAC
  • Current Rating: 25A
  • Dimensions: 3.0 in (76 mm) x 1.5 in (38 mm) x 2.9 in (74 mm) (Height x Width x Depth)
  • Standards: CSA, UL Listed
  • Applications: Commercial and light industrial branch circuit protection
  • Switch Type: Toggle
  • Configuration: 1-Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Amperage: 25A
  • AIC rating: 10kA@120V
  • Connection: Bolt-On
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: QOB
  • Trip Type: Thermal Magnetic
  • Panel Type: QO Load Centers
  • 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: 60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not applicable
  • CPT: Not applicable
  • Full Load Amps: Not applicable
  • Dist Voltage: Not applicable
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: Not applicable
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Not applicable
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 25A
  • Amperage Minimum: Not applicable
  • Nema Rating: Not specified
  • Switch Style: Toggle
  • 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 Listed
  • Compatible Frames: QO
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: QOB
  • Current Rating: 25A
  • 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: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 785901729280
  • GTIN: 00785901729280