76
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
12.1.2 What to Inspect
First withdraw the breaker from the compartment.
Remove barriers. Remove arc chutes. If there is a
deposit of dust, blow clean with compressed air, if avail-
able. Wipe accessible areas with a clean dry cloth.
Inspect contacts.
Note: Switching and fault interruptions and the mak-
ing of motor inrush currents will cause some pitting
of the breaker contact parts. A large accumulation of
operations will give the contacts, especially the arc-
ing contacts, a mottled, dirty, eroded appearance.
This appearance is the normal result of arc burning
and in itself is no cause for concern.
Fig. 86 Contacts and Their Adjustment: DS-632 Breaker.
