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General Electric THJ4V2603 - Molded Case Circuit Breaker 300A 600V

General Electric
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⚡ Product Branding Information

Some General Electric products may now ship with ABB branding due to ABB’s acquisition of GE Industrial Solutions.

Depending on the manufacturing date or production batch, the item or packaging may display either GE or ABB branding.

Unless otherwise noted, these products are considered equivalent in form, fit, function, and specifications.

Please contact our team before placing your order if brand labeling or packaging is critical for your application.

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The General Electric THJ4V2603 is a three-pole molded case circuit breaker from the MicroVersaTrip family, designed for overcurrent protection in industrial power distribution systems. It provides solid-state protection with LI (Long-Time and Instantaneous) trip functions, rated for 300A at 600V AC and a 35kA interrupting capacity at 480V AC in a three-phase configuration. This bolt-on unit weighs 23 lb and features a compact molded case construction for panelboard installation. It complies with applicable UL and NEMA standards for industrial circuit protection. Typical applications include protecting feeders, motors, and branch circuits in manufacturing plants, commercial buildings, and heavy industrial environments.

Key Features & Specifications
  • Type: Molded Case, Solid State, MicroVersaTrip family
  • Voltage Rating: 600V AC
  • Current Rating: 300A
  • Dimensions: Standard molded case breaker size
  • Standards: UL, NEMA
  • Applications: Industrial power distribution, feeder protection, motor branch circuits
  • Switch Type: Circuit breaker
  • Configuration: Three-pole
  • Coil Voltage Maximum: Not applicable (solid state trip)
  • Temp Rating: Standard industrial
  • Shipping Dimensions: Standard for 300A frame
  • Phase: 3
  • Voltage: 600V
  • Amperage: 300A
  • AIC rating: 35kA@480V
  • Connection: Bolt-On
  • Poles: 3
  • Protection: Solid State, LI (Long-Time and Instantaneous)
  • Functions: Long-Time and Instantaneous trip
  • Frame Size: THJ4V
  • Trip Type: Solid state
  • Panel Type: Industrial panelboard
  • Breaker Type: Molded case
  • Control Voltage Minimum: Not applicable
  • Control Voltage Maximum: Not applicable
  • MCM Size: Not specified
  • Metal Type: Molded case
  • Panel Style: Bolt-on
  • Bus Type: Standard
  • Fuse Class: Not applicable
  • Insulation Temperature: Standard
  • 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 specified
  • CPT: Not specified
  • Full Load Amps: 300A
  • Dist Voltage: 600V
  • Bucket Size: Not applicable
  • Bucket Style: Not applicable
  • Bucket Type: Not applicable
  • Full Load Amp Maximum: 300A
  • Full Load Amp Minimum: Not applicable
  • Enclosure: Open (molded case)
  • Relay Style: Not applicable
  • Coil Voltage Minimum: Not applicable
  • Wire: Not specified
  • Amperage Maximum: 300A
  • Amperage Minimum: Not applicable
  • Nema Rating: Standard
  • Switch Style: Circuit breaker
  • Wire Size: Not specified
  • Certification: UL listed
  • Circuit Breaker Mounting Style: Bolt-on
  • Terminal Connection: Bolt-on
  • Frequency Rating: 50/60 Hz
  • Phase Connection: Three-phase
  • Standards: UL, NEMA
  • Compatible Frames: THJ4V
  • Installation Type: Panelboard
  • Item QTY: 1
  • Nema Starter Size: Not applicable
  • Breaker Frame: THJ4V
  • Current Rating: 300A
  • 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: Standard industrial
  • Max Clamp Voltage: Not applicable
  • On-State Current: Not applicable


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