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Square D HDA260451 - Molded Case Circuit Breaker 45A 600V

Square D
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The Square D HDA260451 is a molded case circuit breaker designed for thermal magnetic overcurrent protection in industrial power distribution systems. This 2-pole unit is rated for 45A at 600VAC, providing long time and instantaneous trip functions with an AIC rating of 18kA at 480V. The breaker features an I-Line style plug-in connection, measures 6.4 in (163 mm) x 4.09 in (104 mm) x 3.4 in (86 mm), weighs 3.001 lb, and accepts AWG 14 to AWG 3/0 aluminum/copper terminals. It complies with UL, CSA, NEMA, NOM-003-SCFI-2000, and IEC 60947-2 standards, with a temperature rating of -13 to 158 °F (-25 to 70 °C). Typical applications include single-phase industrial panelboards and switchboards requiring reliable branch circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic Protection
  • Voltage Rating: 600V
  • Current Rating: 45A
  • Dimensions: 6.4 in (163 mm) x 4.09 in (104 mm) x 3.4 in (86 mm) (Height x Width x Depth)
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Applications: Industrial panelboards, switchboards, branch circuit protection
  • Switch Type: I-Line Style Plug-In
  • Configuration: 2-Pole
  • Coil Voltage Maximum: N/A
  • Temp Rating: -13–158 °F (-25–70 °C)
  • Shipping Dimensions: 6.4 in x 4.09 in x 3.4 in
  • Phase: 1
  • Voltage: 600V
  • Amperage: 45A
  • AIC rating: 18kA@480V
  • Connection: I-Line Style Plug-In
  • Poles: 2
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: HDA
  • Trip Type: Thermal Magnetic
  • Panel Type: N/A
  • Breaker Type: Molded Case
  • Control Voltage Minimum: N/A
  • Control Voltage Maximum: N/A
  • MCM Size: N/A
  • Metal Type: N/A
  • Panel Style: N/A
  • Bus Type: N/A
  • Fuse Class: N/A
  • Insulation Temperature: N/A
  • Inductance: N/A
  • Impedance: N/A
  • Barrels: N/A
  • Class Rating: N/A
  • Diameter: N/A
  • Velocity: N/A
  • Clip Center: N/A
  • Clas: N/A
  • Mounting: I-Line Plug-In
  • Hz: N/A
  • Coil Material: N/A
  • Horse Power: N/A
  • Aux Contacts: N/A
  • CPT: N/A
  • Full Load Amps: N/A
  • Dist Voltage: N/A
  • Bucket Size: N/A
  • Bucket Style: N/A
  • Bucket Type: N/A
  • Full Load Amp Maximum: N/A
  • Full Load Amp Minimum: N/A
  • Enclosure: N/A
  • Relay Style: N/A
  • Coil Voltage Minimum: N/A
  • Wire: AWG 14...AWG 3/0 aluminium/copper terminal
  • Amperage Maximum: 45A
  • Amperage Minimum: N/A
  • Nema Rating: N/A
  • Switch Style: I-Line Style Plug-In
  • Wire Size: AWG 14...AWG 3/0 aluminium/copper terminal
  • Certification: UL, CSA, NOM
  • Circuit Breaker Mounting Style: I-Line Plug-In
  • Terminal Connection: I-Line Style Plug-In
  • Frequency Rating: N/A
  • Phase Connection: 1-Phase
  • Standards: UL, CSA, NEMA, NOM-003-SCFI-2000, IEC 60947-2
  • Compatible Frames: HDA
  • Installation Type: Plug-In
  • Item QTY: 1
  • Nema Starter Size: N/A
  • Breaker Frame: HDA
  • Current Rating: 45A
  • Reverse Standoff Voltage: N/A
  • Watts: N/A
  • Peak Pulse Current: N/A
  • Breakdown Voltage (MIN VBR@IT ) (V): N/A
  • Breakdown Voltage (VBR@IT) (V): N/A
  • Polarity: N/A
  • Operating Temperature Maximum Celsius: 70 °C
  • Max Clamp Voltage: N/A
  • On-State Current: N/A


Product Identification
  • UPC: 785901632528
  • GTIN: 00785901632528