Datasheet

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58
Available Models:
Features:
• Can monitor current of motors up to 100Hp
• Fine adjustment with 20-turn pot
• Status LEDs
A pprovals:
Specications
LSR-24
LSR-115
LSR-230
The Model LSR-XXX
load sensors use current levels to determine feed
rates, tool wear, loss of prime on pumps, mixer
viscosity and all types of overload and underload
conditions. They may also be used to stage pump
motors, chillers and other machinery. These
devices combine a current transformer (CT) with
Form C (SPDT) relay contacts to switch alarm
circuits, contactors or any resistive or inductive
load. One simple screwdriver adjustment will
calibrate the sensor for all single-phase or 3-phase
applications up to 100hp.
For more information see:
See Appendix A, page 70, Figure 14 for dimensional
drawing.
See Appendix B, page 80, Figure 48 for typical
wiring diagrams.
Model LSR-24
load sensor, Form C contacts to switch alarm circuits, contactors or any resistive or
inductive load
Load Sensor
Functional Characteristics
Isolation ........................................... 600VAC rms
Current Adjustment Range (Typical) .................. 2-100A
Current Adjustment Range (Min-Max) ................0.5-135A
Trip Setpoint ....................................... Adjustable to ±1% range
Input Characteristics
Control Power
LSR-24 ............................................ 24VAC
LSR-115 ........................................... 115VAC
LSR-230 ........................................... 230VAC
Max Current Ratings ................................ 135A max. continuous
Output Characteristics
Output Contact Rating (SPDT)
Pilot Duty ......................................... 480VA @ 240VAC
General Purpose .................................... 10A
General Characteristics
Temperature Range ................................. -20° to 70°C (-4° to 158°F)
Wire Size .......................................... #12-24AWG
Hole Size .......................................... 0.725” diameter
Terminal Torque. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 in.-lbs.
Safety Marks
CSA, CSA-NRTL/C ................................ (File #46510)
CE ................................................ IEC 60947
Dimensions ........................................ 1.67” H x 2.3” W x 3.56” D
(42.42 x 58.42 x 90.43 mm)
Weight ............................................ 0.4 lb. (6.4 oz., 181.44 g)
Mounting Method .................................. Four #6 screws 3/4” in length
Caution: This product should not be relied upon solely for safety of life or safety applications.
CATALOG_SYMCOM_2014.indd 58 6/10/14 11:06 AM