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MODISON PRODUCTS

Electrical Contacts For Low Voltage

:: Silver Graphite AgC 2~5 ::

Small additions of graphite to silver are found to reduce Considerably the welding properties of silver. Silver-graphite Composites exhibit excellent resistance to abrasion and have good self lubrication for sliding contacts application and antiweld properties.

Silver-graphite provides optimized performance in current limiting MCB, MCCB, ACB & ELCB devices. The direction of graphite fibers are perpendicular to the contact surface. The backing surface of the contact is specially prepared by decarburisation (burn – off), as the presence of graphite in the surface makes welding / brazing impossible.

Modison also supply silver graphite with graphite fibre aligned parallel to the contact surface.

Nominal Composition Graphite (wt. %) Density g/cm³ Hardness HV 10 Electrical Conductivity % I.A.C.S.
Ag C2 2 9.5 42-45 90
Ag C3 3 9.1 42-44 86
Ag C4 4 8.7 41-43 81
Ag C5 5 8.5 40-42 78

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