Littelfuse LSRX-C Load Sensor Product Description

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, transducer, and high current output relay together to switch alarm circuits, contactors, and most resistive or inductive loads. The LSRX can perform the function of an auxiliary contact, yet has the advantages of universal application and isolation.

Littelfuse LSRX-C Load Sensor Typical Application

• Conveyor Systems
• HVAC Equipment
• Saws and Grinders
• Fan Motors
• All Pumping Applications

Littelfuse LSRX-C Load Sensor Features

• Self-Powered
• Depluggable Screw Terminals
• LED Status Indicator
• Optional Header for Remote Fiber Optic Panel Indicator
• UR, CUL Listed
• 5-Year Warranty
• Made in the USA

Littelfuse LSRX-C Load Sensor Specifications

Input Characteristics

Relay Output Rating (SPST-Form A)

• Pilot Duty . . . . . . . . . . . . . . . . . . 480VA @ 240VAC, B300
• General Purpose. . . . . . . . . . . . . . . . . . . . . . . .5A @ 240VAC

Maximum Conductor Diameter . . . . . . . . . 0.7 in.

Output Terminals. . . . . . . . . . . . . . . . . . . depluggable screw terminals

Torque Rating . . . . . . . . . . . . . . . . . .3.0 in.-lbs.

Temperature Range

• Operating . . . . . . . . . . . . . . . . . . -20° to 70°C (-4° to 158°F)
• Storage . . . . . . . . . . . . . . . .-40° to 80°C (-40° to 176°F)

Wire Size . . . . . . . . . . . . . . .12-26 AWG

Output Relay Status Indicator . . . . . . . . . . . . . LED

Relative Humidity . . . . . . . . . . . . . 10-95%, non-condensing per IEC 68-2-3

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

Weight . . . . . . . . . . . . . . .4.8oz

Mounting Method . . . . . . . . . . . . . . Surface Mount

*Conductors may be looped for smaller motor applications.

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Littelfuse LSRX-C Load Sensor Resources

Littelfuse LSRX-C Product Specifications

Littelfuse LSRX-C Installation Bulletin

Littelfuse LSRX-C Engineering Specifications