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Square D HJA36125UDYP - Molded Case Breaker 125A 600V 3P

Square D
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Square D HJA36125UDYP is a 3-pole molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. It is rated for 125A continuous current at up to 600VAC, 3-phase, with an interrupting capacity of 65kA at 480VAC. The unit features an I-Line style plug-in connection for direct bus mounting, weighs 12.5 lb, and provides LI (Long-Time and Instantaneous) trip functions for coordinated protection. This breaker complies with UL and NEMA standards for use in switchboards and panelboards. Typical applications include motor control centers, lighting panels, and feeder circuits in commercial and industrial facilities.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI Trip
  • Voltage Rating: 600V AC
  • Current Rating: 125A
  • Dimensions: Standard 3-pole molded case frame
  • Standards: UL 489, NEMA AB-1
  • Applications: Industrial power distribution, motor control centers, feeder circuits
  • Switch Type: Non-fused disconnect
  • Configuration: 3-pole, 3-phase
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Varies by packaging
  • Phase: 3
  • Voltage: 600V
  • Amperage: 125A
  • AIC rating: 65kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: HJA
  • Trip Type: Thermal Magnetic
  • Panel Type: I-Line
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Not specified
  • Panel Style: I-Line
  • Bus Type: I-Line
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°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
  • 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 applicable
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 125A
  • Amperage Minimum: Not applicable
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: I-Line
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489
  • Compatible Frames: HJA
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: HJA
  • 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