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Square D KC321501021 - Molded Case Circuit Breaker 600V 150A 3-Pole

Square D
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Square D KC321501021 is a molded case circuit breaker designed for overcurrent protection in industrial power distribution systems. This unit is rated for 600 volts AC and 150 amps, providing reliable interruption of fault currents. The breaker features a compact, insulated case construction with a weight of 5.19 pounds, suitable for panelboard or switchboard mounting. It complies with UL 489 and NEMA AB-1 standards for safety and performance. Typical applications include motor control centers, lighting panels, and branch circuit protection in manufacturing facilities.

Key Features & Specifications
  • Type: Molded case circuit breaker, thermal-magnetic trip
  • Voltage Rating: 600 V AC
  • Current Rating: 150 A
  • Dimensions: Not specified
  • Standards: UL 489, NEMA AB-1
  • Applications: Industrial power distribution, motor control centers, lighting panels
  • Switch Type: Toggle
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not specified
  • Temp Rating: Not specified
  • Shipping Dimensions: Not specified
  • Phase: 3
  • Voltage: 600 V
  • Amperage: 150 A
  • AIC rating: Not specified
  • Connection: Line and load lugs
  • Poles: 3
  • Protection: Overcurrent and short circuit
  • Functions: Circuit isolation and protection
  • Frame Size: Not specified
  • Trip Type: Thermal-magnetic
  • Panel Type: Not specified
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not specified
  • Control Voltage Maximum: Not specified
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Not specified
  • Inductance: Not specified
  • Impedance: Not specified
  • Barrels: Not specified
  • Class Rating: Not specified
  • Diameter: Not specified
  • Velocity: Not specified
  • Clip Center: Not specified
  • Clas: Not specified
  • Mounting: Panel or switchboard
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not specified
  • CPT: Not specified
  • Full Load Amps: 150 A
  • Dist Voltage: Not specified
  • Bucket Size: Not specified
  • Bucket Style: Not specified
  • Bucket Type: Not specified
  • Full Load Amp Maximum: 150 A
  • Full Load Amp Minimum: Not specified
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not specified
  • Wire: Not specified
  • Amperage Maximum: 150 A
  • Amperage Minimum: Not specified
  • Nema Rating: Not specified
  • Switch Style: Toggle
  • Wire Size: Not specified
  • Certification: UL 489
  • Circuit Breaker Mounting Style: Fixed
  • Terminal Connection: Lugs
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, NEMA AB-1
  • Compatible Frames: Not specified
  • Installation Type: Panelboard or switchboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: Not specified
  • Current Rating: 150 A
  • 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: Not specified
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


Product Identification
  • UPC: Not specified
  • GTIN: Not specified