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Square D FA4WB - Molded Case Circuit Breaker 100A 600V AC

Square D
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Square D FA4WB Circuit Breaker is a molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. It is rated for 600V AC and 100A continuous current, with a 25kAIC at 480V AC interrupting capacity. The unit features a thermal-magnetic trip mechanism, a three-pole configuration, and a compact frame size of 4.5 inches wide by 3.5 inches deep, weighing 0.84 lb. It complies with UL 489 and CSA C22.2 No. 5 standards for safety and performance. This breaker is typically applied in motor control centers, panelboards, and switchboards for branch circuit protection in manufacturing and process industries.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip, three-pole
  • Voltage Rating: 600V AC
  • Current Rating: 100A
  • Dimensions: 4.5 in W x 3.5 in D x 3.0 in H
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Toggle
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 5.0 in x 4.0 in x 3.5 in
  • Phase: Three-phase
  • Voltage: 600V AC
  • Amperage: 100A
  • AIC rating: 25kA at 480V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent
  • Functions: Overload and short-circuit protection
  • Frame Size: 100A 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: Copper alloy
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: 105°C
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not applicable
  • Class Rating: Not applicable
  • Diameter: Not applicable
  • Velocity: Not applicable
  • Clip Center: Not applicable
  • Clas: Not applicable
  • Mounting: Panel mount
  • Hz: 50/60 Hz
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: 600V AC
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 0A
  • Enclosure: Open type
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Copper
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: Not specified
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 1/0 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: Square D FA series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: FA
  • Current Rating: 100A
  • 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: 785901074090
  • GTIN: 785901074090