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Square D HGA36125UJ - Molded Case Circuit Breaker 125A 600V 3-Pole

Square D
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Square D HGA36125UJ is a Powerpact molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. This three-phase unit carries a 125A current rating at 600VAC and provides LI (Long-Time and Instantaneous) protection functions through its thermal magnetic trip mechanism. The breaker weighs 5 lb and features an I-Line style plug-in connection for secure panel mounting. It is rated for 35kA interrupting capacity at 480VAC, meeting industry standards for robust fault current handling. Typical applications include motor control centers, switchboards, and panelboards in manufacturing facilities and commercial buildings.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Powerpact HGA series, thermal magnetic operation
  • Voltage Rating: 600VAC
  • Current Rating: 125A
  • Dimensions: Standard molded case breaker size
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Industrial power distribution, motor control centers, switchboards
  • Switch Type: I-Line style plug-in
  • Configuration: 3-pole, 3-phase
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Standard packaging
  • Phase: 3
  • Voltage: 600V
  • Amperage: 125A
  • AIC rating: 35kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: HGA
  • Trip Type: Thermal magnetic
  • Panel Type: I-Line compatible
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Copper/steel construction
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Standard I-Line
  • Class: Not applicable
  • Mounting: Plug-in
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 125A
  • Dist Voltage: Not specified
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 125A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Open frame
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 125A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: I-Line plug-in
  • Wire Size: Not specified
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Plug-in
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA
  • Compatible Frames: Powerpact HGA
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HGA
  • Current Rating: 125A
  • 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: Not available
  • GTIN: Not available