Schneider Electric DPS-50 Data Sheet
Potter Electric Signal Company
DPS-50
DIFFERENTIAL PRESSURE
SWITCH
UL Listed and CSA Approved
Maximum Rated Pressure: 250 PSI
Maximum Working Pressure: 180 PSI
Pressure Connections: Brass 1/4-18NPT Female
Adjustable Differential Pressure Range:
8-50 PSID (Increasing Differential Pressure)
Factory Setting: 20 PSID (Increasing Differential
Pressure)
Differential Proof Pressure: 180 PSID
(Maximum allowable pressure difference across
high/low pressure ports.)
Enclosure: NEMA Type 1 (For indoor use only)
Formed sheet metal with powdercoat finish.
Not for use in hazardous locations)
DPS-50 Stock No. 1340001
GENERAL
The Model DPS-50 is a differential pressure switch
used to monitor the difference in pressure between
two pressure sources. A change in pressure between the high and low pressure ports greater than
the differential pressure setting (8-50 PSID range)
will reposition the switch mechanism to open or
close a single electrical circuit by means of a snapaction electrical switch. This control device is
designed for applications sensing air, water or any
Switch Contacts: Snap-Action SPDT (Form C) Switch
22 Amps at 125/250/480 VAC
Conduit Entrance: Opening for 1/2" conduit
Motor Rating: 120VAC 240VAC
Horsepower: 1/2 1
AC F.L.A.: 9.8 8.0
AC L.R.A.: 58.8 48.0
Pilot Duty Rating: 125VA, 120/240 VAC
Ambient Temperature Range: -40°/180° F (-40°/82°C)
Media Temperature Range: 32°/250° F (0°/121°C)
CAUTION: This device is not intended for applica-
tions in explosive environments.
fluid not harmful to brass or silicone and not classified as a hazardous fluid.
This control device is designed for use only as an
operating control. Where an operating control failure
would result in personal injury and/or loss of property, it is the responsibility of the installer to add
devices (safety, limit controls) that protect against,
or systems (alarm, supervisory systems) that warn
of control failure.
PRINTED IN USA
MFG. #5401034 - REV B
6/97
PAGE 1 OF 4
DPS-50
DIFFERENTIAL PRESSURE
SWITCH
MOUNTING AND INSTALLATION
The Model DPS-50 may be mounted in any position on a flat surface by two screws or bolts through the
holes in back of the case, or by use of the universal mounting bracket in an area protected from the weather.
Locate switch where vibration, shock and ambient temperature fluctuations are mimimal. Be sure to connect
the high pressure source to the port labeled “HIGH” and the low pressure source to the port labeled “LOW”.
To avoid damage to the control, always hold a wrench on the wrench flats of the pressure ports when tightening pressure connections. Never tighten the pressure connections by turning the control into the fitting.
FIG. 1
WIRING
Use properly rated temperature supply wire for the anticipated service temperature.
Make all electrical connections in accordance with the National Electrical Code and local regulations.
Route wire under switch bracket to avoid interfering with switch actuation mechanism. (See Fig. 3)
FIG. 2
PRINTED IN USA PAGE 2 OF 4
MFG. #5401034 - REV B
6/97
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