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AC Starter 

OLP 3+

User Guide

VOLT CHECK 

-  

OLP 3+

 monitors the line voltage and 

trips if safe limits (160-270V) are breached. If tripped, 

the reason (Hi/Lo) and value of unsafe voltage are 

shown.

AMP CHECK

 – Current drawn by the AC is monitored 

continuously, and the output is disconnected if this 

exceeds a pre-set limit. This protects the compressor 

from damage due to rotor locking or excessively long 

start-up time. Tripping follows an inverse time-current 

characteristic - higher the overload, faster the tripping 

response. After tripping, the overload current is shown 

on the display.

TIME CHECK 

– On tripping, 

OLP 3+

 holds the output 

open for a duration of 3 minutes from the time of last 

compressor operation, and then restarts the AC 

automatically. This is important safety measure for the 

compressor. When TIME CHECK is active, the display 

indicates the number of minutes left for AC to restart, 

along with trip information.

Rated Voltage

240V (P-N), 50 Hz., 1-phase

Rated Current (AC1)

Upto 30A

Operating Voltage 

Range

90-320V

Under/over-voltage 

Protection

160-270V

Electrical Endurance 

(Operations)

100,000

Enclosure Material Polycarbonate (Flame-retardant)

Mounting Type

4-module box

Terminal Capacity

Mounting Centre 

10 mm

120 mm

2

Dimensions in mm 

(W x H x D)

146 x 88 x 44

Protection Class

IP20

Ambient 

Temperature

-10° - 65°C

Display Parameters

Line voltage, Current, Fault 

indication, Time before restart.

Protection Features

VOLTCHECK, AMPCHECK, 

TIMECHECK

Thank you for choosing an Electron product!

The all-new 

OLP 3+

 is an advanced microprocessor-controlled motor starter designed to ensure 

safety and long life of your air-conditioner using the time-tested combination of VOLT CHECK, 

AMP CHECK, and TIME CHECK. The vivid 3-digit display shows all operational parameters 

such as voltage, current, reason for trip, and time remaining till reset, for user interest and 

awareness of their AC's consumption characteristics. 

OLP 3+

 coveniently fits in a standard 4-

module box. 

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