2.2
SEL-421 Relay Instruction Manual Date Code 20171021
Installation
Shared Configuration Attributes
Front-Panel Templates
The horizontal front-panel template shown in Figure 2.1 is the same for all 3U,
4U, and 5U horizontal versions of the relay. The vertical front-panel template
(shown in Figure 2.1) is the same for all 3U, 4U, and 5U vertical versions of the
relay.
The SEL-421 front panel has three pockets for slide-in labels: one pocket for the
target LED label, and two pockets for the operator control labels. Figure 2.1
shows the front-panel pocket areas and openings for typical horizontal and verti-
cal relay orientations; dashed lines denote the pocket areas. Refer to the instruc-
tions included in the Configurable Label kit for information on reconfiguring
front-panel LED and pushbutton labels.
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