Home » Littelfuse LSRX, LSRX Series, Self-powered load sensor, low-cost proof relay, Current Sensing AC 5 ~ 200VAC
Littelfuse

Littelfuse LSRX, LSRX Series, Self-powered load sensor, low-cost proof relay, Current Sensing AC 5 ~ 200VAC

In stock
SKU: LSRX
$133.99
Description

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The LSRX/LSRX-C Series are AC current sensors designed to energize the output contact whenever 4.5 Amps or greater is present. The LSRX/LSRX-C Series is used commonly as an AC current proof relay to indicate if a motor is operating. It can also be used to interlock fans, compressors and motors; to indicate equipment status such as feed rates, tool wear, loss of prime on pumps, mixer viscosity and all types of current sensing conditions or to stage pump motors, chillers, or other machinery. This device combines a current transformer (CT), transducer and high current output relay together to switch alarm circuits, contactors and most resistive or inductive loads. The LSRX/ LSRX-C Series can perform the function of an auxiliary contact, yet has the advantages of universal application and isolation.

Specifications

*Conductors may be looped for smaller motor applications.
Input Characteristics
Operating Current 5-200A Continuous
Minimum Pull-in Current 4.5A (typical), 7.0A (max)*
Power Induced from AC conductor
Output Characteristics
Relay Output Rating (SPST - Form A) Pilot Duty                 480VA @ 240VAC, B300
General Purpose      5A @ 240VAC
Electrical Life 1x10⁵
Mechanical Life 1x10⁷
Maximum Conductor
Diameter 0.7 in.
Output Terminals LSRX             0.25” quick-connect fast-ons
LSRX-C         depluggable screw terminals
Torque Rating 3.0 in.-lbs.
General Characteristics
Temperature Range: Operating -20° to 70°C (-4° to 158°F)
Storage -40° to 80°C (-40° to 176°F)
Hole Size 0.72” diameter
Wire Size 12-26 AWG
Output Relay Status Indicator LED
Relative Humidity 10-95%, non-condensing per IEC 68-2-3
Standards Passed
Electrostatic Discharge (ESD) IEC 61000-4-2, Level 2, 4kV contact, 4kV air
Fast Transient Burst IEC 61000-4-4, Level 3, 2kV power,
1kV input/output
Surge
IEC 61000-4-5, Level 3, 2kV line-to-line;
2kV line-to-ground
Safety Marks
UL UL508 Recognized (File #E68520)
CE IEC 60947
Dimensions H 68.58 mm (2.7”)
W 28.7 mm (1.13”)
D 63.5 mm (2.5”)
Weight 0.3 lb. (4.8 oz., 136.08 g)
Mounting Method Surface Mount