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Siemens J3B100 - Molded Case Circuit Breaker 100A 600V 3-Phase

Siemens
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Siemens J3B100 is a 100A, 3-phase molded case circuit breaker from the J Frame family, designed to provide thermal-magnetic protection with LI (Long-Time and Instantaneous) trip functions for industrial power distribution systems. Rated for 600V AC, this bolt-on breaker delivers reliable overcurrent and short-circuit protection in a compact, heavy-duty construction weighing 17 lb. The J3B100 complies with industry standards for molded case breakers, making it suitable for panelboards, switchboards, and motor control centers requiring 3-pole, 100A protection in commercial and industrial environments.

Key Features & Specifications
  • Type: Molded Case, J Frame, Type J
  • Voltage Rating: 600V AC
  • Current Rating: 100A
  • Dimensions: Standard J Frame size
  • Standards: UL 489, CSA C22.2 No. 5
  • Applications: Industrial power distribution, panelboards, switchboards, motor control centers
  • Switch Type: Thermal Magnetic
  • Configuration: 3-Pole, 3-Phase
  • Coil Voltage Maximum: Not applicable (thermal magnetic)
  • Temp Rating: 40°C ambient
  • Shipping Dimensions: 6.5 x 4.5 x 3.5 in
  • Phase: 3
  • Voltage: 600V
  • Amperage: 100A
  • AIC rating: 25kA at 480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous
  • Frame Size: J
  • Trip Type: Fixed thermal, magnetic instantaneous
  • Panel Type: Standard
  • Breaker Type: Molded Case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not applicable
  • Metal Type: Steel
  • Panel Style: Standard
  • 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: Optional
  • CPT: Not included
  • Full Load Amps: 100A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 100A
  • Full Load Amp Minimum: 100A
  • Enclosure: Open
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not applicable
  • Amperage Maximum: 100A
  • Amperage Minimum: 100A
  • Nema Rating: 1
  • Switch Style: Thermal Magnetic
  • Wire Size: 4 AWG - 250 kcmil
  • Certification: UL, CSA
  • Circuit Breaker Mounting Style: Bolt-On
  • Terminal Connection: Lug
  • Frequency Rating: 50/60 Hz
  • Phase Connection: 3-Phase
  • Standards: UL 489, CSA C22.2 No. 5
  • Compatible Frames: J Frame
  • Installation Type: Panelboard/Switchboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: J
  • Current Rating: 100A
  • 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: 783643100456
  • GTIN: 00783643100456