Eaton C825KN10

Product Brief Introduction

Heavy-duty industrial molded case circuit breaker (MCCB) manufactured by Eaton Electrical Division, designed for main power distribution protection of low-voltage industrial power systems, providing overload, short-circuit and ground fault protection for power distribution cabinets and heavy load equipment.
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Description

Technical Specifications

  • Rated Continuous Current (In): 200A
  • Rated Insulation Voltage (Ui): 690V AC
  • Rated Operational Voltage (Ue): 600V AC 50/60Hz
  • Pole Configuration: 3-pole standard structure
  • Short-Circuit Breaking Capacity (Icu): 25kA @ 480V AC; 18kA @ 600V AC
  • Thermal Overload Trip Curve: Inverse time delay thermal magnetic trip unit
  • Magnetic Short-Circuit Trip Threshold: 10×In instantaneous trip
  • Standard Compliance: UL489, CSA C22.2 No.5, IEC60947-2
  • Operating Temperature Range: -20°C ~ +70°C
  • IP Protection Grade: IP30 when installed in standard distribution cabinet

Functional Features

  1. Integrated thermal-magnetic dual trip protection system for overload and short-circuit fault isolation
  2. Visual mechanical trip indicator window on front panel for fast fault state identification
  3. Standard auxiliary switch accessory interface for remote fault signal feedback to SCADA system
  4. Compatibility with shunt trip coil and undervoltage release accessories for remote power cut-off control
  5. Lockable handle structure for safety lockout/tagout maintenance operation
  6. Arc quenching chamber with multi-layer metal arc splitter to extinguish short-circuit arc rapidly

Performance Parameters

  • Thermal Trip Delay Time: 2 ~ 600 seconds adjustable based on overload multiple
  • Instantaneous Short-Circuit Trip Response Time: ≤10ms
  • Mechanical Electrical Service Life: 10,000 switching cycles under rated load
  • Dielectric Withstand Voltage: 2500V AC withstand for 1 minute without breakdown
  • Temperature Derating Factor: 0.85 at continuous operating ambient temperature above 50°C

Material Composition

  • Outer Mold Housing: DMC bulk molding compound thermosetting material, UL94-V0 flame retardant, arc resistant
  • Arc Splitter Plates: High-purity cold-rolled steel sheet with anti-oxidation coating
  • Conductive Bus Bars: Electrolytic copper with silver contact plating for arc ablation resistance
  • Trip Bimetallic Strip: Bimetallic thermal alloy with fixed expansion coefficient
  • Operating Mechanism Housing: Reinforced PA66 glass fiber filled insulation plastic

Structural Characteristics

  1. Integral compact molded case single-body structure without split assembly components
  2. Front panel equipped with manual switching handle, trip indicator window, accessory mounting slots
  3. Top and bottom dedicated copper terminal connection lugs for cable crimp wiring
  4. Internal independent arc quenching chamber isolated from trip and conductive components
  5. Side mounting holes for fixed installation inside power distribution cabinet

Working Principle

Normal power transmission state: internal copper bus bar conducts load current through closed contact system; overload fault state: bimetallic strip generates thermal bending deformation under excess current heat, drives mechanical linkage to open contact circuit with inverse time delay; short-circuit fault state: instantaneous electromagnetic magnetic field generated by ultra-high short-circuit current pulls magnetic armature to trigger rapid contact separation; arc generated during contact breaking enters arc quenching chamber and is cut off by metal splitter plates to eliminate arc discharge.

Advantage Highlights

  • Certified for 600V high low-voltage industrial power distribution application, wider voltage coverage than standard 480V MCCBs
  • High short-circuit breaking capacity adapts to heavy industrial motor, transformer and inverter main circuit protection
  • Complete accessory expansion interface supports remote monitoring and remote tripping automation control
  • Lockout handle fully complies with industrial maintenance safety operation specifications
  • Arc-resistant molded housing reduces fire risk under severe short-circuit fault conditions

Applicable Industries

Heavy manufacturing plant power distribution systems, mining equipment power cabinets, large logistics warehouse power supply systems, commercial building main power distribution panels, water treatment plant low-voltage power rooms, wind turbine auxiliary power distribution units

Model Series Belonging

Eaton C825 Series Industrial Molded Case Circuit Breakers; suffix KN10 represents fixed frame type, 10kA basic breaking frame size, rated 200A core current specification

Installation Requirements

  1. Fixed mounting on vertical cabinet mounting plate with M8 stainless steel fixing bolts
  2. Maintain minimum 30mm clearance on left, right, top and bottom sides for heat dissipation and arc expansion space
  3. Torque copper cable lugs to 28N·m standard tightening torque for 200A main wiring terminals
  4. Connect cabinet PE protective ground wire to dedicated ground terminal on breaker frame
  5. Ambient installation environment must be free of corrosive gas, conductive dust and flammable vapor

Operation Precautions

  1. Do not exceed 600V AC maximum operational voltage; overvoltage will damage internal insulation structure permanently
  2. Match cable cross-section to 200A rated current standard (minimum 70mm² copper power cable)
  3. Do not modify internal trip unit structure without factory professional authorization
  4. After short-circuit fault tripping, inspect contact ablation state before resetting breaker
  5. Avoid continuous operation under ambient temperature above 70°C to prevent thermal trip derating failure
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