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Square D P1520NC - QO Circuit Breaker 20A 1-Pole

United Fuses
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The P1520NC is a thermal-magnetic circuit breaker designed for primary overcurrent and short-circuit protection in electrical distribution systems. It is rated for 120/240 Volts AC and carries a current rating of 20 Amps, with a 10,000 Amps interrupting capacity (AIC) to handle fault conditions. This unit features a compact, non-fused construction with a 1-pole configuration, a standard 1-inch frame size, and a plug-in mounting style, weighing 5.19 lb. It complies with UL 489 standards for branch circuit protection and is suitable for use in residential and light commercial load centers. Typical applications include protecting lighting, receptacle, and general-purpose circuits in Square D QO-style panels.

Key Features & Specifications
  • Type: Thermal-magnetic circuit breaker, non-fused, plug-in mount
  • Voltage Rating: 120/240 V AC
  • Current Rating: 20 A
  • Dimensions: Standard 1-inch frame
  • Standards: UL 489
  • Applications: Residential and light commercial load centers, branch circuit protection
  • Switch Type: Toggle
  • Configuration: 1-pole
  • Coil Voltage Maximum: Not applicable (thermal-magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard 1-inch width
  • Phase: 1-phase
  • Voltage: 120/240 V AC
  • Amperage: 20 A
  • AIC rating: 10,000 A
  • Connection: Plug-in
  • Poles: 1
  • Protection: Overcurrent and short-circuit
  • Functions: Thermal-magnetic trip
  • Frame Size: 1-inch
  • Trip Type: Thermal-magnetic
  • Panel Type: QO load centers
  • Breaker Type: QO
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Not specified
  • Panel Style: QO
  • Bus Type: Plug-on
  • Fuse Class: Not applicable
  • Insulation Temperature: 60/75°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-in
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 20 A
  • Dist Voltage: 120/240 V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 20 A
  • Full Load Amp Minimum: 0 A
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 20 A
  • Amperage Minimum: 0 A
  • Nema Rating: Not applicable
  • Switch Style: Toggle
  • Wire Size: #14-8 AWG
  • Certification: UL listed
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: Screw
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 489
  • Compatible Frames: QO
  • Installation Type: Plug-in
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 1-inch
  • Current Rating: 20 A
  • 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
  • Weight: 5.19 lb