Silver-graphene tungsten material electrical contact tips of a low voltage circuit breaker

A contact tip of a circuit breaker, the contact tip comprising:

• an electrical contact material comprising silver (Ag) and tungsten (W);
• and
• a graphene material (Gr) in a range of 0.1% to 1.0% additively mixed in Ag as being denoted as AgGr0.5% (Ag 99.5% and Gr 0.5% in weight) which is mixed with tungsten (W) to form (AgGr0.5)W50 ((AgGr0.5) 50% and W50% in weight) called a silver-graphene tungsten composite material,
• wherein arcing energy was reduced by 27.1% and 7.4% when testing at 5 kA and 65 kA respectively in a functional testing process.

A circuit breaker, comprising:

• a first contact tip comprising:
• a first electrical contact material comprising silver (Ag) and tungsten (W);
• and
• a first graphene material (Gr) having a range of 0.3% to 0.5% additively mixed in Ag with silver to form (AgGr)50W50 called a first silver-graphene tungsten composite material;
• and
• a second contact tip comprising:
• a second electrical contact material comprising silver (Ag) and tungsten (W);
• and
• a second graphene material (Gr) having a range of 0.3% to 0.5% additively mixed in Ag with silver to form (AgGr)50W50 called a second silver-graphene tungsten composite material,
• wherein a unique 2-D graphene structure has been inherited by a first silver-graphene composite material (AgGr) and a second silver-graphene composite material (AgGr).