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Eaton HFD1045L - Molded Case Circuit Breaker 45A 277V

Cutler Hammer
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Eaton HFD1045L is a 1-pole molded case circuit breaker from the Series C family, designed for overcurrent protection in industrial and commercial power distribution systems. It features a 45A current rating and a 277V AC voltage rating, with a 65kA interrupting capacity at 277V AC. The breaker has a compact F Frame size, measuring 3.38 inches in length/depth, 6 inches in height, and 1.38 inches in width, weighing 4.5 lb, and is constructed with a feed-thru connection and thermal magnetic protection. It is UL Listed and certified for use in panelboards and switchboards, with a temperature rating of -13°F to 158°F (-25°C to 70°C). This breaker is typically applied in lighting, heating, and motor control circuits requiring reliable long-time and instantaneous trip functions (LI).

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, Feed-Thru Connection
  • Voltage Rating: 277 ACV
  • Current Rating: 45A
  • Dimensions: 3.38 in x 6 in x 1.38 in (Length/Depth x Height x Width)
  • Standards: UL Listed
  • Applications: Industrial and commercial power distribution, lighting, heating, motor control
  • Switch Type: Circuit Breaker
  • Configuration: 1 Pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: -13°F to 158°F (-25°C to 70°C)
  • Shipping Dimensions: Not specified
  • Phase: 1
  • Voltage: 277 ACV
  • Amperage: 45A
  • AIC rating: 65kA@277V
  • Connection: Feed-Thru
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Frame Size: F 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 applicable
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not applicable
  • Impedance: Not applicable
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Not specified
  • 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 applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 45A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Not applicable
  • Wire Size: Not specified
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Not specified
  • Terminal Connection: Feed-Thru
  • Frequency Rating: Not specified
  • Phase Connection: 1 Phase
  • Standards: UL Listed
  • Compatible Frames: F Frame
  • Installation Type: Not specified
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: F Frame
  • Current Rating: 45A
  • 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: 70°C
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: 078667924766
  • GTIN: 7.86679E+11