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Square D FCJ34045 - Molded Case 45A 480V 3-Pole Breaker

Square D
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Square D FCJ34045 is a 3-pole molded case circuit breaker designed for thermal magnetic protection in industrial power distribution systems. It operates at 480V with a 45A continuous current rating and provides LI (Long-Time and Instantaneous) trip functions for reliable overcurrent protection. The F Frame construction features a bolt-on connection type and weighs 7 lb, with a high interrupting capacity of 65kA at 480V for three-phase applications. This breaker complies with industry standards for molded case circuit breakers and is suitable for use in panelboards, switchboards, and motor control centers requiring robust short-circuit protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, Thermal Magnetic, LI Trip
  • Voltage Rating: 480V AC
  • Current Rating: 45A
  • Dimensions: F Frame
  • Standards: Industry standard molded case breaker compliance
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers
  • Switch Type: Molded Case
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: F Frame size
  • Phase: 3
  • Voltage: 480V
  • Amperage: 45A
  • AIC rating: 65kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: F Frame
  • Trip Type: Thermal Magnetic
  • Panel Type: Standard industrial
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Standard
  • Panel Style: Standard
  • Bus Type: Standard
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • 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: Bolt-On
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 45A
  • Dist Voltage: 480V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 45A
  • Full Load Amp Minimum: 45A
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 45A
  • Amperage Minimum: 45A
  • Nema Rating: Standard
  • Switch Style: Molded Case
  • Wire Size: Not specified
  • Certification: Industry standard
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: Industry standard
  • Compatible Frames: F Frame
  • Installation Type: Panelboard/Switchboard
  • 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: Standard industrial
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not available
  • GTIN: Not available