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Siemens JL3B250 - Molded Case Circuit Breaker 250A 600V

Siemens
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Siemens JL3B250 is a 3-pole molded case circuit breaker from the JL Series, designed to provide LI (Long-Time and Instantaneous) protection for industrial electrical systems. It is rated for 600V AC, 250A continuous current, and delivers a 35kA interrupting capacity at 480V, ensuring reliable fault interruption in high-power applications. The unit weighs 24 lb and features a bolt-on connection with thermal magnetic protection, utilizing a compact molded case construction for robust performance. It complies with industry standards for molded case circuit breakers, making it suitable for use in distribution panels and switchboards. Typical applications include motor control centers, industrial machinery, and commercial power distribution systems requiring precise overcurrent protection.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, JL Series, Thermal Magnetic, LI Protection
  • Voltage Rating: 600V AC
  • Current Rating: 250A
  • Dimensions: Standard JL frame size
  • Standards: UL, CSA, NEMA compliant
  • Applications: Industrial power distribution, motor control centers, switchboards
  • Switch Type: Molded Case
  • Configuration: 3-Pole
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: Standard 40°C ambient
  • Shipping Dimensions: Standard JL frame
  • Phase: 3
  • Voltage: 600V
  • Amperage: 250A
  • AIC rating: 35kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: JL
  • Trip Type: Thermal Magnetic
  • Panel Type: Distribution panel
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Not specified
  • Panel Style: Not specified
  • Bus Type: Not specified
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • Inductance: Not applicable
  • 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 specified
  • CPT: Not specified
  • 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: Not applicable
  • Enclosure: Not specified
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 250A
  • Amperage Minimum: Not applicable
  • Nema Rating: Not specified
  • Switch Style: Molded Case
  • 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: JL Series
  • Installation Type: Fixed
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: JL
  • 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