Rockwell Automation 2100 CENTERLINE Low Voltage Motor Control Centers - Manual (Page 80)

80 Rockwell Automation Publication 2100-IN012E-EN-P - February 2012
Chapter 7 Final Checklist Before Energizing
Figure 43 - 1.0 Space Factor and Units with Vertical Disconnect Handles
Standard Latches Arc Resistant Latches
1 Space Factor to 2.5
Space Factor
2.5 Space Factor or
Larger
An arc resistant latch is
used for the center latch
only for main incoming
power units and 100 ms
arc-resistant rating.
For most units, the center latch is a standard quarter-turn latch. For
some units a multi-turn latch is used.
Torque the latch to 20 lb•in +/- 2 lb•in.