Product Short Description
Product Name
Eaton HLDB3600FT33W 3-Pole Fixed Trip Molded Case Circuit Breaker
Product Brief Introduction
Heavy-duty industrial molded case circuit breaker designed for low-voltage power distribution protection, dedicated to industrial power cabinet, motor control center and commercial power distribution system load protection.
Description
Technical Specifications
- Rated Frame Current: 600A
- Pole Count: 3P
- Rated Operational Voltage AC: 600V AC
- Rated Insulation Voltage: 800V
- Frequency Range: 50Hz / 60Hz
- Trip Unit Type: Fixed Thermal-Magnetic Trip FT
- Thermal Trip Range: Adjustable long-time overload protection matched to frame 600A rating
- Magnetic Trip Instantaneous Setting: Fixed short-circuit instantaneous protection
- Interrupting Rating: High withstand industrial breaking capacity for distribution branch circuits
- Terminal Configuration: Line & load lugs integrated
- Enclosure Code: W = Weatherproof outdoor compatible housing variant
Functional Features
- Long-time thermal overload protection for continuous overcurrent load
- Instantaneous magnetic short-circuit fault isolation to prevent busbar burnout
- Visible contact status indicator window for circuit break/closed state identification
- Standard mechanical lockout function for LOTO safety operation
- Built-in arc quenching chamber to suppress internal arc flash energy
- FT fixed trip unit eliminates calibration deviation under temperature fluctuation
Performance Parameters
- Operating ambient temperature range: -20°C ~ +60°C
- Storage temperature range: -40°C ~ +85°C
- Mechanical endurance: 10,000 open-close operation cycles
- Electrical endurance under rated load: 4,000 operation cycles
- IP protection grade base unit: IP20; suffix W upgraded environmental sealing
- Pollution degree compliance: Pollution Degree 3 industrial environment
Material Composition
- Main housing: Reinforced flame-retardant thermosetting polyester, UL94 V-0 fire resistance
- Moving & fixed contact: Silver-tungsten alloy composite contact tip
- Arc extinguishing plate: Galvanized steel stack cooling plate
- Trip mechanism: High-strength stainless steel spring assembly
- Terminal conductive body: Electrolytic copper with tin plating anti-oxidation layer
Structural Characteristics
- Integral one-piece molded main housing with split arc chamber compartment
- Front-mounted manual rotary operation handle
- Internal isolated trip compartment separated from power conductive path
- Rear busbar lug mounting interface for horizontal bus connection
- Standard mounting footprint compliant with IEC standard MCCB cabinet cutout
Working Principle
Thermal bimetallic strip deforms under sustained overload current to trigger mechanical trip linkage for long-time protection; high short-circuit current generates instantaneous magnetic flux in trip coil to pull armature and disconnect main contacts within milliseconds; arc generated during breaking is split and cooled by stacked steel arc plates for rapid arc extinction.
Advantage Highlights
- Fixed FT trip unit delivers consistent protection threshold without field calibration
- W suffix reinforced sealing resists dust, moisture and mild corrosive gas in semi-outdoor stations
- High mechanical and electrical cycle lifespan reduces equipment replacement frequency
- Standard LOTO lock structure complies with global industrial safety management standards
- Universal cabinet mounting size compatible with mainstream low-voltage distribution cabinet brands
Applicable Industries
Power generation auxiliary distribution, petrochemical plant power rooms, manufacturing factory MCC, commercial building main distribution boards, water treatment plant low-voltage systems, mining surface power distribution
Installation Requirements
- Mount vertically only, tilt angle not exceeding ±5° from vertical axis
- Maintain minimum 50mm clearance top and bottom for heat dissipation
- Torque terminal lugs to manufacturer specified 28 N·m tightening torque
- Outdoor installation with W variant requires external rain shield auxiliary housing
- Busbar connection must use tin-plated copper lugs to avoid contact resistance overheating
Operation & Maintenance Precautions
- Do not modify internal trip mechanism or disassemble arc chamber without factory authorization
- Quarterly inspection of contact indicator window for abnormal discoloration from arc damage
- Annual torque retightening of power terminals to eliminate thermal expansion loose contact
- For corrosive environment operation, clean housing surface dust every 6 months with dry compressed air
- Replace unit immediately after short-circuit fault breaking regardless of visual integrity
Reviews
There are no reviews yet.