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Square D QO142L225PG - Main Lug Load Center 225A 120/240V

Square D
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Square D QO142L225PG is a 225A main lug load center designed for branch circuit protection in residential and commercial power distribution systems. It operates at 120/240V AC with a 22kA short-circuit current rating, accommodating up to 42 circuits in a single-phase configuration. The unit features a NEMA 1 indoor enclosure constructed from galvanized steel, with a copper bus bar and a 225A main lug connection for top or bottom feed. It complies with UL 67 and CSA standards, ensuring safe and reliable performance in lighting, appliance, and general-purpose branch circuit applications.

Key Features & Specifications
  • Type: Main lug load center, single-phase, 3-wire, indoor NEMA 1 enclosure
  • Voltage Rating: 120/240V AC
  • Current Rating: 225A
  • Dimensions: 14.5 in H x 10.5 in W x 4.0 in D
  • Standards: UL 67, CSA C22.2 No. 29
  • Applications: Residential and commercial branch circuit protection
  • Switch Type: Main lug only (no main breaker)
  • Configuration: 42 circuits, 1-phase, 3-wire
  • Coil Voltage Maximum: Not applicable (main lug)
  • Temp Rating: 60/75°C
  • Shipping Dimensions: 16.0 in H x 12.0 in W x 5.0 in D
  • Phase: Single-phase
  • Voltage: 120/240V AC
  • Amperage: 225A
  • AIC rating: 22kA at 240V AC
  • Connection: Main lug, top or bottom feed
  • Poles: 1, 2, or 3-pole compatible
  • Protection: Branch circuit overcurrent
  • Functions: Distribution and protection
  • Frame Size: QO
  • Trip Type: Thermal-magnetic
  • Panel Type: Load center
  • Breaker Type: QO plug-on
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: #4 AWG to 300 kcmil (main lugs)
  • Metal Type: Galvanized steel
  • Panel Style: Flush or surface mount
  • Bus Type: Copper
  • Fuse Class: Not applicable (breaker-based)
  • Insulation Temperature: 60/75°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: 10.0 in
  • Clas: Not applicable
  • Mounting: Flush or surface mount
  • Hz: 60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 225A
  • Dist Voltage: 120/240V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 225A
  • Full Load Amp Minimum: 0A
  • Enclosure: NEMA 1 indoor
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper or aluminum
  • Amperage Maximum: 225A
  • Amperage Minimum: 0A
  • Nema Rating: NEMA 1
  • Switch Style: Main lug
  • Wire Size: #4 AWG to 300 kcmil (main lugs)
  • Certification: UL 67, CSA
  • Circuit Breaker Mounting Style: Plug-on
  • Terminal Connection: Mechanical lugs
  • Frequency Rating: 60 Hz
  • Phase Connection: Single-phase
  • Standards: UL 67, CSA C22.2 No. 29
  • Compatible Frames: QO
  • Installation Type: Indoor
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: QO
  • Current Rating: 225A
  • 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
  • UPC: 78590126743
  • GTIN: 00785901267430