Moving contact is the movable electrode component in medium voltage vacuum interrupters that carries current and separates during circuit interruption.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Contact Force | 800-2500 N | |
| Stroke Length | 8-20 mm | |
| Current Rating | 630-3150 A | |
| Voltage Rating | 7.2-36 kV | |
| Electrical Life | 10,000-30,000 operations at rated current | |
| Mechanical Life | 30,000-100,000 operations | |
| Operating Speed | 1.2-2.5 m/s | |
| Contact Diameter | 40-100 mm |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Core vacuum switching component for medium voltage circuit breakers and contactors.
The assembly of electrical contacts within a circuit breaker or main disconnect that establishes, maintains, and interrupts current flow.
A critical electrical component within a diverter switch that physically moves to establish or break electrical connections between circuits.
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Manufacturer profiles associated with Moving Contact.
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The moving contact serves as the movable electrode that separates from the stationary contact to create a vacuum gap for arc interruption, while maintaining current conduction during normal operation.
CuCr alloys provide optimal combination of high conductivity, excellent arc interruption capability, low chopping current, and good mechanical strength while minimizing contact welding and erosion.
Vacuum (below 10^-4 Pa) provides superior dielectric strength, prevents oxidation, enables rapid metal vapor condensation for arc extinction, and eliminates gas contamination that could cause restrikes.
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