Contacts with rising ecological safety in automatic switches

A.Mrachkovskiy,
 
V.Kokhanovskiy
 

Electrical Contacts and Electrodes - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #10
http://www.materials.kiev.ua/article/457

Abstract

In the circuit breakers of series ВА 47–29 are used the contacts of type КМК-А 10m, material of which the toxic oxide of cadmium has in the composition, that belongs to 1-th class toxically hazardous substances. For replacement of material with the oxide of cadmium was worked out ecologically safe pin material with additions of oxide of tin and other ingredients. Application ecologically safe heterogeneous pin pair in the circuit breakers ВА 47–29 allowed to promote electro-erosive firmness in 1.5– 2 times


CONTACTS, ECOLOGICAL SAFETY, OXIDE OF CADMIUM, OXIDE OF TIN, TOXICITY