Description
GE THJK436225
Technical Specifications
- Product Type: Thermal-Magnetic Molded Case Circuit Breaker.
- Poles: 3-Pole (3P).
- Current Rating: 225 Amps continuous current rating.
- Voltage Rating: Rated for 600V AC industrial distribution.
Functional Features
- Thermal-Magnetic Protection: Provides dual protection against prolonged overloads and instantaneous short-circuits.
- High Interrupting Capacity: Capable of safely interrupting severe fault currents.
- Visual Trip Indicators: Features clear visual indicators for rapid fault identification and troubleshooting.
Application Scenarios
- Power Distribution: Main and feeder protection in industrial switchboards and panels.
- Motor Protection: Protecting large industrial motor circuits from overloads and faults.
Performance Parameters
- Interrupting Rating: High interrupting rating suitable for demanding industrial environments.
- Trip Curve: Standard thermal-magnetic trip characteristic for industrial loads.
Material Composition
- Housing: High-strength, flame-retardant thermoplastic molded case.
- Contacts: Silver-alloy contacts for superior conductivity and arc resistance.
Structural Characteristics
- Design: Compact, bolt-on mounting design for secure installation.
- Terminals: Line and load terminals with specified torque markings.
Working Principle
Under normal conditions, current flows through the breaker contacts. During an overload, a bimetallic strip heats and bends to trip the mechanism. During a short circuit, a magnetic solenoid instantly trips the breaker to interrupt the fault current.
Installation Requirements
- Torque terminals strictly to manufacturer specifications to prevent hot spots.
- Ensure proper phase rotation and secure mechanical mounting.
Usage Precautions
- Never operate a tripped breaker without investigating the root cause.
- Perform periodic testing to verify trip functionality.
