GE CK08CE300 Industrial Contactor

The GE Fanuc CK08CE300, also cataloged as the CK08CE300 power contactor, operates as a dedicated hardware component for high-current load switching and motor circuit control within industrial power distribution and motor control platforms. It switches 3-pole primary power circuits up to 1000 V at 275 A using an integrated 110-127 V AC/DC control coil mechanism.

Hardware Specifications

Backplane Power Execution & Switching Characteristics

• Power Switching Capacity: Engineered with heavy-duty silver-alloy main power contacts rated for continuous operational currents up to 275 A across 1000 V insulation thresholds, ensuring thermal stability under heavy inductive loads.
• Control Coil Actuation Velocity: Driven by an low-consumption 110-127 V operating coil assembly that provides rapid contact closure and opening cycles, minimizing arcing time and contact erosion.
• Firmware & Hardware Interlock Compatibility: Integrates standardized mechanical and electrical auxiliary contact mounting locations, enabling seamless status feedback loop routing into PLC discrete input channels and motor protection relays.

Frequently Asked Questions

Q: What is the primary coil voltage requirement for actuating the CK08CE300 contactor?

A: The operating coil accepts a control voltage supply within the range of 110-127 V at 50/60 Hz AC or DC.

Q: Can auxiliary contact blocks be added to the CK08CE300 for status monitoring?

A: Yes. Side-mounted or front-mounted auxiliary contact blocks can be mechanically attached to provide NO/NC logic feedback bits directly to PLC input modules or indicator circuits.

Q: Is the main contact assembly replaceable on this frame size?

A: Yes. The arc chute housing can be unbolted to allow routine inspection, cleaning, or replacement of the main power contact tips during scheduled maintenance overhauls.

Field Installation Guidelines

1. Physical Panel Mounting: Mount the contactor vertically on a clean, rigid, unpainted metallic backpanel using M6 mounting hardware. Ensure vertical orientation within +/- 15 deg to guarantee correct mechanical armature travel.
2. Main Power Terminal Wiring: Torque main line and load power cable lugs to specified manufacturer ratings using a calibrated torque wrench. Ensure adequate busbar clearance to prevent phase-to-phase short circuits under high-voltage switching transients.
3. Coil Wiring & Suppression: Wire the 110-127 V control lines to terminals A1 and A2 using twisted control wiring. Install an surge suppressor across the coil terminals to absorb voltage spikes during coil de-energization and protect adjacent electronic modules.
4. Arc Chute Inspection: Verify that the top-mounted arc chute cover is securely latched and free of physical obstruction before applying main distribution voltage.