Counters made by Littelfuse use microcontrollers to ensure excellent repeat accuracy. The solid-state reliability of these single-function time-delay relays makes them ideal choices for applications requiring millions of accurate operations over many years.

 

Features

• Minimum input voltage ratings of 12 V dc and 24 V ac
• Maximum input voltage ratings 120 V dc and 240 V ac
• Maximum counts of 250 or 1023
• Switch opening times ≤20 ms
• Ac line frequency/Dc ripple of 50/60 Hz with accuracy within 10 %

 

Benifits

• Encapsulation protects internal circuits from humidity, physical shocks, and vibrations
• Available with SPDT or SPST output circuitry
• Low cost, small size, and low weight

Model	Image	Description
HRV Series		The HRV combines the accuracy of microcontroller based circuitry with an electromechanical relay output. The HRV’s switching capacity allows direct control of loads like compressors, pumps, motors, heaters, and lighting. The HRV “S” version provides a vend time after the selected number of initiate switch closures to start is reached.
KSPUA Series		The KSPU Series is a factory programmed module available in any 1 of 14 standard functions. The KSPU offers a single adjustable timer or counter function. Switch adjustment allows accurate selection of the time delay or number of counts the first time and every time.