Description
GE THJK436250
Technical Specifications
- Product Type: Thermal-Magnetic Molded Case Circuit Breaker.
- Poles: 3-Pole (3P).
- Current Rating: 250 Amps continuous current rating.
- Voltage Rating: Rated for 600V AC industrial distribution.
Functional Features
- Thermal-Magnetic Protection: Protects against both prolonged overloads and instantaneous short-circuits.
- High Interrupting Capacity: Safely interrupts severe fault currents.
- Visual Trip Indicators: Clear visual indicators for rapid fault identification.
Application Scenarios
- Power Distribution: Main and feeder protection in industrial switchboards.
- Equipment Protection: Safeguarding transformers and large industrial machinery.
Performance Parameters
- Interrupting Rating: High interrupting rating for demanding industrial environments.
- Trip Curve: Standard thermal-magnetic trip characteristic.
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.
- 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.
Installation Requirements
- Torque terminals strictly to manufacturer specifications.
- 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.
