Ludlum Measurements 375 - Page 25

Models 375 (Including Series One), 375/1, 375/2 & 375/4 Section 5
Ludlum Measurements, Inc. Page 5-4 May 2017
Figure 3. Mains Relay Box Inside View.
See below for description of noted parts in drawing above.
A – 110/220 Vac conduit AC input. “H” = hot and “N” =
neutral. For 220 Vac, H = L1 and N = L2.
B – relay output. “H” = hot and “N” = neutral. For 220 Vac, H
= L1 and N = L2.
C – optional conduit connector input.
D – optional relay output for conduit.
Strobe lights and/or horns are also available through Ludlum
Measurements.