Veris H938 Datasheet
H738 & H938 SERIES
VERIS INDUSTRIES
Current Switches with Relay:
Adjustable Trip Point
Status And Control In
One Package
DESCRIPTION
The Hawkeye Relay Combination Series is the ideal solution for the automation
installer. These units combine a current switch and relay into a single package,
reducing the space required for total control of fans and pumps. The current
switch and relay operate independently of one another. These devices allow
start/stop control and status monitoring with one device instead of two.
APPLICATIONS
● Starting/stopping and monitoring positive status of motors
● Detecting belt loss and coupling shear
RELAY CONTACT RATINGS
current monitoring
H735 (SPST, N.O.)
Resistive..................................5A@250VAC, 30VDC
Inductive.................................3A@250VAC, 30VDC
Hx38, Hx58 (SPST, N.O.)
Resistive..................................10A@250VAC, 30VDC
Inductive.................................5A@250VAC, 30VDC
Hx48 (SPDT)
Resistive.................................. 8A@250VAC, 30VDC
Inductive................................. 3.5A@250VAC, 30VDC
TM
H938
H738
FEATURES
● Combines command relay and fan/pump status sensor in a single, easy to install
unit
● Reduces number of components installed...ts bet ter in small starter enclosures
● Detect belt loss and motor failure...ideal for fan and pump status
● H748 and H948 feature a SPDT command relay...control two outputs with a
single relay
● Bracket on H938, H948, and H958 can be installed in three dierent
congurations...added exibility
● Reduced charges from electrician
● Relay and status LEDs for easy setup
● Polarity insensitive status output...fast and easy installation
● Adjustable setpoint for current sensor status...ts many applications
● 5-year warranty
DETECTS BELT LOSS/COUPLING SHEAR!
DETECTS BELT LOSS/COUPLING SHEAR!
Fan/pump
Calibrated
Trip Point
On
Electrical
Failure
TYPICAL COIL PERFORMANCE
Voltage AC DC
24V................................... 10mA 10mA
12V.................................................................... 20mA
Pull In Voltage
Hx3x .............................................................. 20.1VDC
Hx48 .............................................................. 20.1VDC
Hx58 .............................................................. 8.4VDC
Drop Out Voltage
Hx3x .............................................................. 5.2VDC
Hx48 .............................................................. 5.2VDC
Hx58 .............................................................. 3.0VDC
SPECIFICATIONS
Sensor Power Induced from monitored conductor
Insulation Class 60 0VAC RM S
Frequency Range 50/60 H z
Temperature Range -15° to 60°C (5° to 140°F)
Humidity Range 10-90% RH non-condensing
Hysteresis 10% Typical
Terminal Block Wire Size 24-14 AWG (0.2 to 2.1 mm2)
Terminal Block Torque 3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)
Agency Approvals UL 508 open device listing
Year
5
Warranty
O O
Now you can easily detect when drive belts slip, break, or pump couplings shear.
In fact, a typical HVAC motor that loses its load has a reduction of current draw
of up to 50%. That’s why our sensors are the industry standard for status.
Loss of Belt/Coupling Shear
Maximize Reliability
Minimize Installed Cost
Do not use the LED status indicators as evidence of applied voltage.
800.354.8556
+1 503.598.4564
www.veris.com
HQ00 01760.B 01131
800.354.8556
E150462
+1 503.598.4564
DIMENSIONAL DRAWINGS
H735/738/ 748 /758
Removable/Adjustable Mounting Bracket
0.7"
(19 mm)
0.9"
(23 mm)
3.0" **
(75 mm)
www.veris.com
(79 mm)
**3.1”
Removable Mounting Bracket
1.1”
(26 mm)
H938/948/958
1.0”
(25 mm)
0.8”
(21 mm)
Bracket can
be mounted
on three sides
for added
installation
exibility.
Self-gripping Iris
4.2"
(106 mm)
2.8"
(68 mm)
3.8"
(95 mm)
0.2” x 0.15”
slot (2x)
* Terminal block may extend up to 1/8” over the height dimensions shown.
APPLICATION/WIRING DIAGRAMS
Start/Stop Monitoring of Fan /Pump Motors
CONTROLLER
DI (Status)
DO (Relay
Coil)
CONTACTOR
CONTROL
POWER
Motor
1.1" *
(27 mm)
Fan or Pump
2.8”
(70 mm)
Ø 0.3”
(8 mm)
3.0”
(76 mm)
2.5”
(64 mm)
1.4”*
(36 mm)
Relay Controlled Directly by Status Contacts
Relay Coil
Power Source
RELAY LOAD
current monitoring
ORDERING INFORMATION
MODEL AMPERAGE
RANGE
H735 1 - 135A 0.1A@30VAC/DC 1A or less SPST, N.O. 24VAC/DC Solid-core
H738 1 - 135A
H748 1 - 135A 1A or less SPDT 24VAC/DC Solid-core
H758
H938 2.5 - 135A 2.5A or less SPST, N.O. 24VAC/DC Split- core
H948 2.5 - 135A 2.5A or les s SPDT 24VAC/DC Split- core
H958 2.5 - 135A 2.5A or less SPST, N.O. 12VDC nom. Split-core
1 - 135A 1A or less
ACCESSORIES
DIN Rail Clip Set (AH01)
DIN Rail (AV01) and DIN Stop Clip (AV02)
HQ00 01760.B 01131
STATUS
OUTPUT(max.)
1.0A@30VAC/DC
MIN. TRIP
POINT
1A or less SPST, N.O. 24VAC/DC Solid-core
RELAY COIL
VOLTAGE
SPST, N.O. 12VDC nom.
AH01
HOUSING STATUS
Solid-core
AV01
RELAY
LED
POWER LED
n n n
n n n
n n n
n n n
n n n
n n n
n n n
AV02
UL
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