Description
Eaton HLDB3600FT33W
Technical Specifications:
- Pole Quantity: 3 poles
- Rated Current: 600 A
- Rated Voltage: 600 VAC, 250 VDC
- Interrupting Rating: 100 kAIC at 240 VAC, 65 kAIC at 480 VAC
- Trip Unit: Fixed thermal, fixed magnetic trip
- Frequency: 50 / 60 Hz
- Mounting: Panel mount or cabinet busbar mount
- Protection Class: IP20 for live parts
- Operating Temperature: -20 °C to +60 °C
- Storage Temperature: -40 °C to +85 °C
- Certification: UL Listed, CE marked
Function Features:
- Thermal trip function for long-time overload protection
- Magnetic instantaneous trip for fast short circuit fault clearing
- Blow-open contact structure for high-speed fault current interruption
- Front manual operating handle for local on / off operation
- Built-in arc quenching chamber to extinguish electric arc during fault trip
- Compatible with auxiliary switch and shunt trip optional accessories
- High interrupting capacity for heavy industrial power distribution
- Reusable after fault clearing once root cause is eliminated
Application Scenarios:
- Industrial main power distribution cabinet feeder protection
- Large UPS input and output circuit protection
- Motor control center main incoming circuit
- Refinery and chemical plant low voltage power distribution
- Data center low voltage power distribution system
Material Composition:
- Molded Case Housing: High strength flame retardant thermosetting plastic
- Contact Material: Silver tungsten alloy main contacts
- Arc Chamber: Insulating ceramic and arc splitter plates
- Operating Mechanism: High strength steel mechanical linkage
- Terminals: Tin-plated copper lugs for cable or busbar connection
- Trip Element: Bimetallic thermal strip and magnetic coil assembly
Structural Features:
- Large rectangular molded case enclosure
- Front central operating handle with on/off/trip position indication
- Internal arc quenching chamber above contact assembly
- Bimetallic thermal element and magnetic trip coil installed inside each pole
- Top and bottom terminals for line side and load side wiring
- Mechanical interlock prevents cover removal under live condition
Working Principle: When circuit overload occurs, current heats bimetallic strip. Bimetallic strip bends and triggers mechanical trip mechanism to open main contacts. During short circuit fault, strong magnetic flux from high fault current pulls magnetic armature instantly and trips breaker. Arc generated during contact opening enters arc quenching chamber, split and cooled by arc splitter plates until arc extinguishes. Operating handle moves to trip position after fault interruption.
Installation Requirements:
- Mount breaker on cabinet busbar or panel mounting plate
- Use specified torque to tighten cable lug or busbar connection screws
- Maintain sufficient clearance around breaker for heat dissipation
- Separate power wiring from low voltage control signal cables
- Connect protective earth for cabinet enclosure
- Keep ambient temperature within operating range
- Avoid installation location with corrosive gas and heavy dust
Usage Notes:
- Verify rated current and voltage match circuit design before energizing
- Do not adjust fixed trip unit parameters, trip characteristic is factory fixed
- Inspect contact terminals for overheating and discoloration during routine inspection
- Replace breaker if plastic housing shows burn mark or damage after heavy fault trip
- Wear proper arc flash personal protective equipment for live inspection
- Disconnect upstream power before opening breaker cover
