41
Instruction Booklet
IB 33-790-1J
Effective November 2010
Instructions for Low Voltage Power
Circuit Breakers Types DS and DSL
EaToN CorPoraTIoN www.eaton.com
The moving arcing contact thus wedges the stationary
contact fingers apart as the breaker closes.
The parallel action of the magnetic fields of the currents
in each arcing contact finger causes the fingers to be
attracted toward each other when closing against fault
currents. This results in a “blow-on” action on the arcing
contacts.
Figures 37 thru 46 show the combined moving and sta-
tionary contact sub-assemblies of the various breakers.
This shows the proper relationships, clearances and con-
tact deflections of the various parts.
Fig. 36 Three-pole Assembly of DS-840 Pole Units on Frame.
