Rockwell Automation 1503 OEM Starter Frame Components Installation Manual - Manual (Page 42)

3-8 Adjustments
1503-IN050E-EN-P – June 2013
Isolation Switch (Cut-away view from right side)
Ground Bar
Incoming Line Stab
Isolation Switch Blade
Auxiliary Contact
Maximum Gap 0.06 in. (1.5 mm) between Ground Bar
and Isolation Switch Blade in open position
Figure 3.9 – Isolation Switch Ground Adjustment
Isolation Switch Auxiliary
The auxiliary contacts are mounted on the left side of the isolation switch,
Contacts
slightly below the cams on the isolation switch shaft.
Normally open contacts (Isolation Switch a Contacts - ISa) are on the
outside of the isolation switch housing, and normally closed contacts
(Isolation Switch b Contacts - ISb) are on the inside of the housing.
Isb Auxiliary Contacts (N.C.)
Isa Auxiliary Contacts (N.O.)
Figure 3.10 – Location of Isa and Isb Auxiliary Contacts
Isolation Switch Ground
Adjustment (cont.)