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Eaton HJD4125 - Molded Case 125A 600V 4-Pole Breaker

Cutler Hammer
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The Eaton Cutler-Hammer HJD4125 is a molded case circuit breaker from the Series C family, designed to provide thermal-magnetic protection for electrical systems. This 4-pole, 3-phase unit is rated for 125A at up to 600V, with an interrupting capacity of 65kA at 480V, and features a J Frame with feed-thru connections for reliable overcurrent protection. The breaker measures 4.06 inches in depth, 5.5 inches in height, and 5.5 inches in width, weighs 12.6 lb, and is constructed with a compact, industrial-grade housing for panelboard installation. It is UL Listed and certified for compliance with North American safety standards, ensuring dependable performance in demanding environments. Typical applications include industrial power distribution, motor control centers, and commercial electrical panels requiring robust circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI (Long-Time and Instantaneous) Trip Functions
  • Voltage Rating: 600V
  • Current Rating: 125A
  • Dimensions: 4.06 in x 5.5 in x 5.5 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial power distribution, motor control centers, commercial panels
  • Switch Type: Circuit Breaker
  • Configuration: 4-Pole, 3-Phase
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600V
  • Amperage: 125A
  • AIC rating: 65kA@480V
  • Connection: Feed-Thru
  • Poles: 4
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: J Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Panelboard
  • Hz: Not specified
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: Not specified
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: Not specified
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not specified
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 125A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not specified
  • Wire Size: Not specified
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Panelboard
  • Terminal Connection: Feed-Thru
  • Frequency Rating: Not specified
  • Phase Connection: 3-Phase
  • Standards: UL Listed
  • Compatible Frames: J Frame
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not specified
  • Breaker Frame: J Frame
  • 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: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 786679096079
  • GTIN: 00786679096079