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Westinghouse JA31750SMW - Molded Case Circuit Breaker 225A 600V 3-Pole

Westinghouse
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The Westinghouse JA31750SMW is a 3-pole molded case circuit breaker from the JA Series, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 600V AC, 225A continuous current, and 3-phase operation, with an interrupting capacity of 22kA at 480V AC. This bolt-on unit weighs 19 lb and features a compact frame construction for panelboard installation, though it does not include lugs for wiring termination. The breaker complies with applicable industry standards for overcurrent protection in commercial and industrial environments. Typical applications include motor control centers, switchboards, and feeder circuits requiring high fault current interruption without thermal delay.

Key Features & Specifications
  • Type: Molded Case, JA Series, Instantaneous Trip
  • Voltage Rating: 600V AC
  • Current Rating: 225A
  • Dimensions: Standard molded case frame size
  • Standards: Industry standard for magnetic-only protection
  • Applications: Industrial power distribution, motor circuits, feeder protection
  • Switch Type: Circuit breaker
  • Configuration: 3-pole
  • Coil Voltage Maximum: Not applicable (magnetic trip)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: Standard molded case packaging
  • Phase: 3
  • Voltage: 600V
  • Amperage: 225A
  • AIC rating: 22kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Frame Size: JA Series
  • Trip Type: Instantaneous
  • Panel Type: Standard industrial panel
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Standard molded case materials
  • Panel Style: Standard
  • Bus Type: Standard
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard industrial
  • 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 included
  • CPT: Not included
  • Full Load Amps: 225A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 225A
  • Full Load Amp Minimum: 225A
  • Enclosure: Open frame
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not included
  • Amperage Maximum: 225A
  • Amperage Minimum: 225A
  • Nema Rating: Not specified
  • Switch Style: Circuit breaker
  • Wire Size: Not specified
  • Certification: Industry standard
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On (lugs not included)
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: Industry standard
  • Compatible Frames: JA Series
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: JA Series
  • Current Rating: 225A
  • 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: Standard industrial
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


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