MV Switchgear Static Contact

The static contact is the fixed-side contact in an MV breaker, contactor, or disconnector mechanism — the part that the moving contact mates with during closing. This SKU covers general-purpose static contacts in copper (with optional silver plating) for standard MV switchgear duty: continuous current carrying, routine make-and-break operation without severe arc exposure.

For arc-exposed static contacts (vacuum interrupter applications, high-cycle switching), see CuW Static Arc Contact. For plug-in static contacts (withdrawable VCB cubicles), see Tulip Contact 630A or Tulip Contact 1250A.

Specifications

Property	Value
Material	ETP copper C11000 (default); aluminum bronze C95400 on request
Form	Machined static contact (per drawing)
Dimensions	Per drawing
Tolerance	Per drawing
Surface Treatment	Silver-plated contact face; bare-machined body
Mounting	Bolt, weld, or braze per drawing
Contact Face	Bare, silver-plated, or pre-brazed CuW tip
Conductivity	100% IACS (C11000); 10–15% IACS (C95400)
Working Voltage	Common MV ratings: 12 / 24 / 40.5 kV
Working Current	Sized per design rated current

Exact certified properties for your lot are available with material documentation on request.

Applications

• Static contact in MV breaker mechanisms at 12 / 24 / 40.5 kV
• Disconnector and isolator static contacts in MV switchgear panels
• General-purpose static contact for refurbishment of installed switchgear
• Sub-supply to MV switchgear OEMs assembling complete contact systems

Technical Notes

A static contact's job is to hold position while the moving contact opens and closes against it. Material selection trades electrical conductivity (favoring copper) against mechanical durability and wear resistance (favoring bronze or CuW-tipped designs). For typical MV switchgear duty without severe arc exposure, ETP copper with a silver-plated contact face is the standard choice: high conductivity, low joint resistance at the contact interface, and proven service life.

For static contacts in disconnector applications where the contact face sees sliding wear during racking, aluminum bronze is an alternative — harder, more wear-resistant, at the cost of lower conductivity. For contacts in vacuum interrupters or high-cycle arc-switching applications, the CuW Static Arc Contact is the right choice.

Sourcing & OEM

Custom MV switchgear static contacts to your drawing are routine. Specify material, dimensions, plating zones, mounting interface, and any pre-brazed CuW tip; contact us for a project-specific quote.