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The HE30 Series is a two-stage,
hybrid surge suppressor designed for
use on data or communication
circuits where surges of 10KA (8 x
20uS) or less are anticipated. This
device will provide continuous and
reliable protection for all of your
sensitive electronics.
The #10 stud is used for mounting
HE30 and serves as the grounding
mechanism to ensure proper grounding
of the internal protection scheme.
Care should be taken to provide a
clean, conductive surface that is
bonded to earth ground and mounted
as close as possible to the lines to
be protected.
The HE30A is a polarized unit
designed to be used on low voltage
DC signal lines. This unit has a
black and yellow color-coded input
pair, with a red and green output
pair.
The HE30C is a non-polarized unit
designed for use on low voltage DC
signal lines. This unit has a black
and yellow color-coded input pair,
with a red and green output pair.
The standard HE30 second stage
clamp is from each line to ground
(A) except in cases where the ground
potential may vary. In this case, a
line-to-line second stage clamp
would be preferred.
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