U.2.32
SEL-421/SEL-421-1 Relay User’s Guide Date Code 20020501
Installation
Relay Placement
Figure 2.19 SEL-421 Relay Chassis Dimensions.
Panel Mounting
Place the panel-mount versions of the SEL-421 Relay in a switchboard panel.
See the drawings in Figure 2.19 for panel cut and drill dimensions (these
dimensions apply to both the horizontal and vertical panel-mount relay
versions). Use the supplied mounting hardware to attach the relay.
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