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GE FVK463R
Product Name: GE FVK Series Medium-Voltage Vacuum Contactor
Product Introduction: The FVK463R is a medium-voltage vacuum contactor in GE’s FVK series, utilizing vacuum arc-quenching technology. It is used for motor start/stop control and load switching operations in medium-voltage power distribution systems.
Technical Specifications:
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Manufacturer: General Electric
Detailed content
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Series: FVK (Medium-Voltage Vacuum Contactor)
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Rated Voltage: 4.76 kV (4.16 kV class)
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Rated Current: 630 A
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Rated Short-Time Withstand Current: 25 kA / 4 s
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Rated Peak Withstand Current: 63 kA
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Mechanical Life: 10,000 operations
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Electrical Life: 10,000 operations (AC-3 duty)
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Arc-Quenching Medium: Vacuum
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Operating Mechanism: Electromagnetic / Spring-energy-storage
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Control Voltage: AC/DC 110 V – 240 V
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Switching Time: ≤ 50 ms for both open and close operations
Functional Features:
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Vacuum interrupter chamber — zero pollution, maintenance-free, strong arc-quenching capability
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Fast operation, suitable for frequent switching duty
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Long mechanical and electrical life (10,000 operations)
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Auxiliary contacts for state feedback and interlock control
Material Composition:
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Interrupter Chamber: Stainless steel / copper-chromium alloy contacts + glass/ceramic vacuum envelope
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Housing: Stainless steel / epoxy resin castings
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Operating Mechanism: Spring steel, aluminum alloy
Structural Characteristics:
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Three-pole integrated structure with upper and lower outlet terminals
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Equipped with auxiliary contact groups (normally open / normally closed)
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Chassis-mounted or panel-mounted
Working Principle: When the control circuit energizes the electromagnetic coil (or releases the spring-energy-storage mechanism), the operating mechanism drives the moving contact within the vacuum interrupter. As the contacts separate, the vacuum medium rapidly quenches the arc, interrupting the current. The auxiliary contacts simultaneously change state to provide feedback to the control system for interlock and status monitoring.
Installation Requirements:
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Vertical installation; tilt angle must not exceed ±5°
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Terminal torque must comply with GB/T 11022 standards
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The vacuum interrupter must not be subjected to external mechanical stress
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Ensure control voltage (AC/DC 110–240 V) matches the local supply
Usage Precautions:
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Regularly test the vacuum degree — replace the interrupter when below 1.33 × 10⁻² Pa
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Do not exceed the rated operating frequency limits
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Verify control circuit polarity for DC operation
