GE THJ9VF26

Product Introduction
The THJ9VF26 is a heavy-duty, molded case circuit breaker (MCCB) manufactured by General Electric. It is engineered to provide reliable overcurrent protection and safe circuit isolation in demanding industrial and commercial power distribution networks.

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Description

GE THJ9VF26

Technical Specifications

  • Frame Type: THJ Series
  • Amperage Rating: 600 Amperes
  • Poles: 3 Poles
  • Voltage Rating: 600V AC Maximum
  • Trip Unit: LSIG (Long-time, Short-time, Instantaneous, Ground fault)

Functional Features

  • Provides comprehensive protection against overloads, short circuits, and ground faults.
  • Features adjustable trip settings for customized system coordination.
  • Supports field-installable accessories for remote control and status monitoring.

Application Scenarios
Extensively utilized in main power distribution panels, heavy industrial manufacturing facilities, and large commercial infrastructure requiring high-amperage circuit protection.

Performance Parameters

  • High short-circuit interrupting capacity.
  • Precision-engineered trip mechanisms ensure accurate and fast response to electrical faults.

Material Composition
Housed in a high-strength, flame-retardant thermoset plastic enclosure with high-conductivity copper internal busbars and silver-alloy contacts.

Structural Characteristics
Compact molded case design with standardized dimensions for seamless integration into existing switchgear. Features an external toggle handle for manual operation.

Working Principle
Operates using an electronic trip unit that continuously monitors current flow. Upon detecting an overload or fault condition, it sends a signal to the internal shunt trip mechanism to open the contacts and interrupt the circuit.

Installation Requirements

  • Must be installed by qualified electricians in accordance with local electrical codes.
  • Requires proper torque specifications on line and load lugs to prevent overheating.
  • Ensure adequate ventilation and clearance around the breaker for heat dissipation.

Usage Precautions

  • Always de-energize the panel before installation or maintenance.
  • Never exceed the rated voltage or amperage capacity.
  • Perform regular maintenance testing to ensure mechanical and electrical integrity.