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Crouse-Hinds ST5 - Thermal-Magnetic Circuit Breaker 100A

Crouse-Hinds
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Crouse-Hinds ST5 Circuit Breaker is a thermal-magnetic circuit breaker designed for overcurrent protection in industrial electrical systems. It is rated for 480V AC and 100A continuous current, with a 10kA interrupting capacity at 480V AC. The breaker features a compact molded case construction with a 3-pole configuration, weighing 7 lb and measuring 4.5 inches in height, 2.75 inches in width, and 3.5 inches in depth. It complies with UL 489 and CSA C22.2 No. 5 standards for industrial circuit breakers. This breaker is typically used in motor control centers, panelboards, and switchboards for branch circuit protection in manufacturing facilities and commercial buildings.

Key Features & Specifications
  • Type: Thermal-magnetic, molded case circuit breaker
  • Voltage Rating: 480V AC
  • Current Rating: 100A
  • Dimensions: 4.5" H x 2.75" W x 3.5" D
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Motor control centers, panelboards, switchboards
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: 480V AC
  • Temp Rating: 40°C
  • Shipping Dimensions: 6" x 4" x 5"
  • Phase: 3-phase
  • Voltage: 480V AC
  • Amperage: 100A
  • AIC rating: 10kA at 480V AC
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short-circuit
  • Functions: Overload and short-circuit protection
  • Frame Size: 100A frame
  • Trip Type: Thermal-magnetic
  • Panel Type: Industrial panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: 120V AC
  • Control Voltage Maximum: 480V AC
  • MCM Size: Not applicable
  • Metal Type: Steel
  • Panel Style: Flush mount
  • Bus Type: Copper
  • 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: 60 Hz
  • Coil Material: Copper
  • Horse Power: 50 HP at 480V
  • Aux Contacts: 1 NO/NC
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: 480V 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 style
  • Relay Style: Not applicable
  • Coil Voltage Minimum: 120V AC
  • Wire: Copper
  • Amperage Maximum: 100A
  • Amperage Minimum: 0A
  • Nema Rating: 1
  • Switch Style: Toggle
  • Wire Size: 14 AWG to 2 AWG
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Panel mount
  • Terminal Connection: Lug
  • Frequency Rating: 60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: 100A frame
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: 100A
  • Current Rating: 100A
  • Reverse Standoff Voltage: Not applicable
  • Watts: Not applicable
  • 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: 784011207404
  • GTIN: 00736953014800