Item Specifications :

Condition : A brand new unused, undamaged item that is fully operational and functions as intended.

Warranty : 1 Year Manufacturer.

Warranty Service : Repair or Replacement.

Package Contain : 

1 OLR

1 number CT 50 A

Product Descriptions :

suitable for any HP motor 

User can connect any rating of contactor and design any hp of DOL starter

Input : 415 V AC R,Y,B

Output : Potential free realy output 

Dimention : 72x72

50 A  CT provided

fault indication provided.

Micro controller based design 

Digital Volt and ampere meter are provided to see system voltage and load current accordingly.

Two seperate display for volt and amp.

high voltage protection, 

low voltage protection,

Adjustable voltage limit (High and low both voltage protection limit adjustable)

overload protection

Adjustable overload from 0 to 50 A

Current based dry run protection provided 

Adjustable dry run current from 0 to 50 A

Dry run Auto Reset timer provided with with bypass facility 

Automatic Overload and Dry run current adjustable

When motor start, press the UP button for 5 seconds, This unit will set overload and dry run current automatically 

Voltage and Current calibration facility 

Short circuit protection

protection bypass facility 

Delay off timer provided with bypass facility (adjusatble from 0 second to 999 min) If user want to stop the motor after certain time then they can set the delay off timer. in this timing mode user can start the motor by pressing start button and it will auto stop based on preset delay off time.

High accuracy in over load and dry run current

User can bypass all the protection from setting

Isolated supply provided

Error messages shows on display 

RESET button provided to reset unit

Set button provided to set the current voltage and timer.

Reset button provided to reset the unit 

Factory reset facility in case of incorrect value entered.

High quality ABS. premium enclosure provided.

Working :

This model has dry run protection so it only starts the motor if water is present in the underground tank or sump.

It has current based dry running. If the motor runs without water then it takes a lower ampere (current) then its actual current. so when the motor current is down from actual current, it stops the motor and protects the motor from dry running. 

Protect motor from dry running.