Eaton C825KN10 200A 600V

Eaton C825KN10 200A 600V

Product Introduction
The Eaton C825KN10 is a NEMA Size 4 three-phase full-voltage AC contactor belonging to the Cutler-Hammer Freedom Series (Series A2 platform). It is engineered for heavy-duty industrial motor control and high-power load switching applications. The device features a robust 3-pole main contact configuration rated at 200A continuous current and 600VAC maximum voltage, paired with a standard 120VAC control coil. Designed for demanding environments such as manufacturing plants, mining operations, petrochemical facilities

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Description

Eaton C825KN10 200A 600V

Technical Specifications

  • Brand: Eaton / Cutler-Hammer
  • Model: C825KN10
  • Product Series: Freedom Series (Series A2)
  • Product Type: NEMA Size 4 Three-Phase Full-Voltage AC Contactor
  • Pole Configuration: 3-pole main contacts (Normally Open) + 1 auxiliary contact (Normally Open)
  • Rated Operational Current (AC-3): 200A at 460VAC / 600VAC
  • Rated Operational Voltage: 600VAC maximum
  • Control Coil Voltage: 120VAC (60Hz) / 110VAC (50Hz) compatible
  • Coil Model: 9-1891-1 (standard configuration)
  • Coil Power Consumption: Approximately 270VA inrush, 27VA holding
  • Motor Horsepower Rating: 50HP at 460VAC, 75HP at 230VAC, 10HP at 575VAC
  • Short-Circuit Withstand: 100kA at 600VAC
  • Mechanical Life: 10,000,000 operations
  • Electrical Life (AC-3): 1,000,000 operations
  • Maximum Operating Frequency: 600 operations per hour (AC-3 load)
  • Insulation Class: Class B (130°C)
  • Protection Rating: IP00 / IP20 (open chassis design)
  • Operating Temperature: -40°C to +70°C
  • Certifications: UL Listed, CSA Certified, CE Mark, suitable for Class 1 Division 2 hazardous locations

Functional Features

  • Three-pole main contact design for simultaneous switching of three-phase power circuits
  • Integrated normally open auxiliary contact for control circuit signaling, self-latching, or interlocking
  • High mechanical endurance of 10 million operations ensuring long service life in frequent cycling applications
  • Silver-cadmium oxide (AgCdO) main contacts providing excellent resistance to arc erosion and contact welding
  • Low coil power consumption with high-reliability 120VAC coil suitable for standard industrial control voltages
  • NEMA Size 4 frame size providing robust construction for heavy-duty industrial environments
  • Compatible with Eaton XTO series thermal overload relays for comprehensive motor protection
  • Panel mount design with bolted connections ensuring secure installation in electrical enclosures
  • Open chassis design (IP00/IP20) facilitating heat dissipation and visual inspection of contacts
  • Conforms to NEMA ICS 2-200 standards for industrial control equipment
  • Suitable for full-voltage non-reversing (FVNR) motor starting applications
  • Designed for integration with PLC outputs and industrial automation control systems

Application Scenarios

  • Industrial Manufacturing: Full-voltage starting of production line motors, conveyor systems, and assembly equipment
  • Mining Operations: Heavy-duty switching for crushers, grinders, and ore processing machinery
  • Petrochemical Industry: Control of pump groups, compressor motors, and process equipment
  • Power Generation: UPS power transfer switching and auxiliary power circuit control
  • HVAC Systems: Large chiller compressor motor control and cooling tower fan switching
  • Water Treatment: Pump motor control for municipal and industrial water processing facilities
  • Material Handling: Crane and hoist motor control in warehousing and logistics operations
  • Oil and Gas: Pipeline pump station motor control and valve actuator power switching
  • Pulp and Paper: Drive motor control for paper machines, pulpers, and refining equipment
  • Data Centers: Backup generator transfer switching and critical power distribution control

Performance Parameters

  • Continuous Current Rating: 200A at 600VAC for AC-1 resistive loads
  • AC-3 Motor Current: 200A at 460VAC supporting motors up to 50HP
  • AC-3 Motor Current: 200A at 230VAC supporting motors up to 75HP
  • Short-Circuit Withstand Capacity: 100kA at 600VAC without contact welding
  • Mechanical Endurance: 10 million make-break cycles without mechanical failure
  • Electrical Endurance: 1 million operations under AC-3 motor load conditions
  • Maximum Switching Frequency: 600 operations per hour under rated AC-3 conditions
  • Coil Inrush Power: Approximately 270VA during contactor engagement
  • Coil Holding Power: Approximately 27VA during sustained operation
  • Contact Material: Silver-cadmium oxide alloy ensuring low contact resistance and arc resistance
  • Operating Temperature Range: -40°C to +70°C for reliable performance in extreme environments
  • Dielectric Strength: Withstands standard industrial insulation test voltages per UL/CSA requirements

Material Composition

  • Main Contacts: Silver-cadmium oxide (AgCdO) alloy for high conductivity and arc resistance
  • Contact Springs: High-grade spring steel with anti-corrosion treatment for consistent contact pressure
  • Electromagnetic Coil: Copper wire wound on insulated bobbin with epoxy resin encapsulation
  • Magnetic Core: Laminated silicon steel sheets minimizing eddy current losses and magnetic hysteresis
  • Arc Chutes: Ceramic or high-temperature thermoset plastic compartments for arc quenching and extinction
  • Housing/Frame: Steel or reinforced thermoset plastic providing structural rigidity and mounting support
  • Terminal Connections: Copper or copper-alloy terminals with tin or silver plating for low-resistance connections
  • Auxiliary Contact Block: Silver-nickel or silver alloy contacts for reliable control circuit switching
  • Mounting Hardware: Zinc-plated or stainless steel bolts and brackets for secure panel installation
  • Internal Wiring: High-temperature insulated copper conductors with strain relief provisions

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