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Westinghouse JB32250SMW - Molded Case 250A 600V 3-Pole Breaker

Westinghouse
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The Westinghouse JB32250SMW is a three-pole molded case circuit breaker from the AB DE-ION family, designed for instantaneous magnetic-only protection in industrial power distribution systems. It is rated for 250A at 600V AC, with a high interrupting capacity of 22kA at 480V, and features a bolt-on connection for secure installation. This 19-pound breaker utilizes a compact frame construction suited for panelboards and switchboards, operating on a three-phase system. It complies with industry standards for overcurrent protection in commercial and industrial environments. Typical applications include motor control centers, feeder circuits, and equipment requiring short-circuit protection without thermal overload elements.

Key Features & Specifications
  • Type: Molded Case, Magnetic Only, Instantaneous Trip
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: Standard molded case breaker footprint
  • Standards: UL 489, CSA, NEMA
  • Applications: Industrial motor protection, feeder circuits, switchboards
  • Switch Type: Non-fused
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable (magnetic only)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: Approximately 6 x 4 x 10 inches
  • Phase: 3
  • Voltage: 600V
  • Amperage: 250A
  • AIC rating: 22kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Magnetic Only
  • Functions: I - Instantaneous
  • Frame Size: JB
  • Trip Type: Instantaneous
  • Panel Type: Distribution panelboard
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Copper and steel
  • Panel Style: Bolt-on
  • 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: Bolt-On
  • Hz: 50/60
  • Coil Material: Not applicable
  • Horse Power: Not specified
  • Aux Contacts: Not included
  • CPT: Not included
  • Full Load Amps: 250A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 250A
  • Full Load Amp Minimum: 250A
  • Enclosure: Open frame
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 250A
  • Amperage Minimum: 250A
  • Nema Rating: NEMA AB-1
  • Switch Style: Toggle
  • Wire Size: Not specified
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Bolt-On
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-phase
  • Standards: UL 489, CSA C22.2
  • Compatible Frames: Westinghouse AB DE-ION
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: JB
  • Current Rating: 250A
  • 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: Not available
  • GTIN: Not available