@1986ABB 
Relays AG 
Baden/Switzerland 
4th edition 
All rights with respect 
to 
this document, including applications for patent and registration 
of 
other industrial property rights, are reserved. Unauthorised use, in particular reproduc-
tion 
or 
making available 
to 
third parties, 
is 
prohibited. 
This document has been carefully prepared and reviewed, however should in spite 
of 
this 
the reader find an error, he is requested 
to 
inform us at his earliest convenience. 
The data contained herein purports solely 
to 
describe the product and is not a warranty of 
performance 
or 
characteristics. It is with the best interests of our customers in mind that 
we constantly strive 
to 
improve 
our 
products and  keep them abreast 
of 
advances in 
technology. This may, however, lead 
to 
discrepancies between a product and its "Tech-
nical Description" 
or 
"Instructions 
for 
Installation and Operation".