
Installation Guide
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH
• Follow safe electrical work practices.
See NFPA 70E in the USA, or applicable local codes.
• This equipment must only be installed and serviced by qualified electrical personnel.
• Read, understand and follow the instructions before installing this product.
• Turn off all power supplying equipment before working on or inside the equipment.
• Use a properly rated voltage sensing device to confirm power is off.
DO NOT DEPEND ON THIS PRODUCT FOR VOLTAGE INDICATION
• Only install this product on insulated conductors.
Failure to follow these instructions will result in death or serious injury.
A qualied person is one who has skills and knowledge related to the construction and
operation of this electrical equipment and the installation, and has received safety
training to recognize and avoid the hazards involved. NEC2009 Article 100
No responsibility is assumed by Veris Industries for any consequences arising out of the
use of this material.
DANGER
Current Monitoring
Product Overview
The H608 is a current-sensitive switching device that monitors current (amperage) in the conductor passing
through it. A change in amperage in the monitored conductor that crosses the switch (setpoint) threshold plus the
hysteresis value causes the resistance of the FET status output to change state, similar to the action of a mechanical
switch. In this model, the setpoint is adjustable through the action of a twenty (20) turn potentiometer (see the
RoHS
Compliant
NOTICE
• This product is not intended for life or safety applications.
• Do not install this product in hazardous or classified locations.
• The installer is responsible for conformance to all applicable codes.
• Mount this product inside a suitable fire and electrical enclosure.
Calibration section). The status output is suitable for connection to building controllers or other appropriate data
acquisition equipment operating at up to 30 volts. The H608 requires no external power supply to generate its
output.
Specifications
TM
H608
Split-Core Current Switch, Adjustable Trip Point
Sensor Power
Amperage Range
Status Output Ratings
Insulation Class
Setpoint
Frequency Range
Temperature Range
Humidity Range
Hysteresis
Off State Resistance
On State Resistance
Terminal Block Max. Wire Size
Terminal Block Torque
Agency Approvals
Installation Category
Induced from the monitored conductor
0.5 to 175 A continuous
N.O. 1.0 A@ 30 VAC/DC, not polarit y sensitive
600 VAC RMS (UL); 30 0 VAC (CE )
Adjustable, 0.5 A or less
50 /60 Hz
-15° to 60°C ( 5° to 140°F)
10-9 0% RH non-condensing
10% t ypic al
Open switch represents >1 MΩ
Closed switch represents < 200 mΩ
24 to 14 AWG (0.2 to 2.1 mm2)
3.5 to 4.4 in-lbs (0.4 to 0.5 N-m)
COMPLIANCE INFORMATION
UL508 open device listing, CE: EN61010 -1
Cat. III, pollution degree 2
TM
Z201757-0H Page 1 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07131
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
For applications requiring double or reinforced insulation, please contact the factory.
The product design provides basic insulation only.
Do not use the LED indicators as evidence of applied voltage.
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.

Installation Guide
Current Monitoring
H608
TM
Dimensions
Installation
Removable Mounting Bracket
0.6"
2.1"
(54 mm)
0.4” x 0.2”
(10 mm x 5 mm)
Slot (2x)
(16 mm)
0.5"
(13 mm)
(54 mm)
2.9"
(74 mm)
3.5"
(89 mm)
2.1"
0.7"
(18 mm)
1.2"
(31 mm)
2.5" *
(64 mm)
1.0" *
(26 mm)
Disconnect and lock out power to the enclosure containing the conductor to be
monitored.
1. Locate a mounting surface for the removable mounting bracket
that will allow the monitored conduc tor to pass through the center
window when it is installed and that will keep the product at least
½” (13 mm) from any uninsulated conductors. Determine cable
routing for the controller connection, allowing the wiring to reach
the mounting location.
2. Drill holes to mount the bracket to the chosen surface using the
included screws.
CONTACTOR
Insulated Conductor ONLY
DDC CONTROLLER
DI
3. Wire the output connections from the sensor to the controller (solidstate contact).
4. Snap the sensor over the conductor and clip the assembly to the
mounting bracket.
5. Secure the enclosure and reconnect power.
6. Calibrate the sensor with the load running normally.
Fan
Motor
Z201757-0H Page 2 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07131
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.

Installation Guide
Current Monitoring
H608
TM
Notes
For load currents greater than sensor maximum rating:
Use a 5 Amp (H68xx series) current transformer (CT) as shown. This technique can be combined with wrapping (see below) to add
range for a low current load on a high current source.
>175 A (sensor max.)
240A
DANGER: 5A CTs can present
hazardous voltages. Install
5A
300A:
H68 xx-5A CT
4A
CTs in accordance with
manufacturer's instructions.
Terminate the CT secondary
before applying current.
For load currents less than sensor minimum rating:
Wrap the monitored conductor through the center window and around the sensor body to produce multiple turns. This increases
the current measured by the transducer. Program the controller to account for the extra turns (e.g., if four turns pass through the
sensor (as shown) divide the normal reading by 4).
< 0.5 A (Sensor Min.)
0.5A
0.3 A
4x
• Derate the product’s maximum current for the number of turns
through the sensing window using the following formula.
Rated Max. Amps ÷ Number of Turns = Max. monitored Amps
e.g. : 100A ÷ 4 Turns = 25 Amps max. in monitored conductor
• Failure to follow these instructions can result in overheating
and permanent equipment damage.
CAUTION
RISK OF EQUIPMENT DAMAGE
Z201757-0H Page 3 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07131
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.

Installation Guide
Current Monitoring
H608
TM
Calibration
Before beginning calibration, establish normal load conditions. Then choose either A or B below.
A. To monitor under-current (belt loss, coupling shear, status)
Status
1. Turn setpoint screw clockwise
until Status Open LED turns
on.
2. Slowly turn the screw counter
clockwise until the Status
Closed LED turns on.
CLOSED
Status
OPEN
Status
CLOSED
Status
OPEN
Setpoint
Setpoint
3. Turn the screw an additional
¼ turn counter clockwise for
Setpoint
¼
operational margin.
B. To monitor over-current (mechanical problems, seized impeller)
Status
1. Turn setpoint screw counter
clockwise until Status Closed
LED turns on.
CLOSED
Status
OPEN
Setpoint
Troubleshooting
Status
2. Slowly turn the setpoint screw
clockwise until the Status
Open LED just turns on.
CLOSED
Status
OPEN
Setpoint
3. Turn the setpoint screw an
additional ¼ turn clockwise
Setpoint
¼
for operational margin.
Problem Solution
No Reading at Controller • Check sensor calibration (see above)
• Check for control voltage at sensor (<30V, <1A)
• Check for amperage in monitored conductor (> 0.5A)
• Assure that sensor core mating surfaces are clean and that the core clamp is completely closed
Setpoint screw has no stops The setpoint screw has a slip-clutch at both ends of its travel to avoid damage. Twenty turns CCW will
Both LEDs are lit Setpoint screw is too far clockwise. See solution above.
reset the sensor to be most sensitive. Repeat calibration above.
Z201757-0H Page 4 of 4 ©2013 Veris Industries USA 800.354.8556 or +1.503.598.4564 / support@veris.com 07131
Alta Labs, E nercept, Ensp ector, Hawkeye, Trus tat, Aerospo nd, Veris, and th e Veris ‘V’ log o are tradema rks or registe red tradema rks of Veris Ind ustries, L. L.C. in the USA and /or other countri es.
Other companies’ trademarks are hereby acknowledged to belong to their respective owners.