Datasheet

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57
Available Models:
Features:
• Self-powered
• Low cost proof relay
• Can monitor up to 135A loads
Approvals:
LSR-0
Specications
The Model LSR-0
is a self-powered load sensor intended for use as
a proof relay. It is used to verify that current is
flowing as intended. It has a guaranteed 15A pull-
in current and 2.5A drop-out current. Proof relays
are typically used to interlock fans, compressors,
motors, heating elements and other devices. The
LSR-0 is self-powered, that is, it draws its power
from the wire being monitored so it does not
require separate control power wiring.
For more information see:
See Appendix A, page 70, Figure 14 for dimensional
drawing.
See Appendix B, page 81, Figure 50 for typical
wiring diagrams.
Model LSR-0
self-powered load sensor / low-cost proof relay
Load Sensor
Max Current Ratings ................................ 135A continuous
Functional Characteristics
Turn-on Threshold .................................. Fixed, 15A (max.)*
Turn-off Threshold ................................. 2.5A (min.)
Power ............................................. Induced from conductor
Isolation ........................................... 600VAC rms
Output Characteristics
Relay Output Rating
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
Dimensions ........................................ 1.67” H x 2.3” W x 3.56” D
(42.42 x 58.42 x 90.43 mm)
Weight ............................................ 0.35 lb. (5.6 oz., 158.76 g)
Mounting Method .................................. Four #6 screws 3/4” in length
*Conductors may be looped for smaller motor applications.
Caution: This product should not be relied upon solely for safety of life or safety applications.
CATALOG_SYMCOM_2014.indd 57 6/10/14 11:06 AM