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LT3-D & LT3B-D Star & Delta Type Starters
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The electromagenetic starters LT3 Dxx series are devices designed for remote control,direct control and protection of induction motors coiled and operating according to a starter scheme"star/delta" .They are a combination of three contactors LT1 Dxx series,time relay and a set of buttons "start" and "stop" fabric cabled.They provide the easy motor unwinding giving possibility for setting the time for unwinding in "star" as the time for switching between "star" and "delta" is fixed to 0.5 seconds.
The starters are offered on the market in two types:
- closed type LT3B-D-metal boxes providing the corresponding IP code from dust and moisture(IP54) as at mounting there should be provided protection of the device from short circuit through breakers or disconnectors
- open type LT3-D-for mounting in distribution boxes as at mounting there should be provided protection of the device from short circuit through breakers or disconnectors
The starters are offered on the market without mounted thermal protection which is purchased separately according to the motor capacityThe choice of a suitable protection protection which is purchased separately according to the motor capacity.The choice of a suitable protection prevents motors operation at unusual temperature conditions and guarantees maximum constant operation,increases the effectiveness and prolongs the term of exploitation.If necessary,at clients order the power supply operating voltage of the pneumatic starter can be changed.

Functions
switching on/off alternating current three phase motors operating according to a scheme"star-delta"
does not allow secondary unwarranted switching on of the starter at transitory lowering of the voltage
protects the motor from overload in the range of the corresponding thermal proteciton
indication of the operating condition through a valve indicator
possibility for mounting of additional contacts(for the open type)
remarkable with high reliability of current charateristics

Technical Data
* Rated voltage of the controlling voltage:400VAC,50/60 Hz
Note:In case you need different controlling coils voltage of the starers you can turn to our regional representatives.
* Rated operating voltage:690V
* Rated operating current range:from 7 to 93A AC
* Insulation voltage:>690V
* Surge voltage wear resistance: 6000v
* Joining terminal :screw terminal
* Little power consumprion and small dimensions
* Connecting:
- flexible or rigid conductors with or without cable terminal for joining to the consumer and section according to the motor power
- three by three inlets/outlets supplied with orifices for the cables
* Possibility for operation at higher frequency
* Mounting:
- mounting to a flat surface(wall) with bolts/screws
- mounting position:vertical gradient-maximum 5
* Plastic:wear resistance of UVrays and non-flammable(self-extinguishing material)
* The metal body is covered with corrosion-proof paint Ambient temperature: -10+60
* Altitude:up to 2000m


Type designation(without a box) Overall dimensions(mm)
heighet width depth
LT3-D25A 135 170 160
LT3-D32A 135 170 160
LT3-D40A 150 285 190
LT3-D65A 150 285 190
LT3-D95A 150 310 190


Type designation(without a box) Rated capacity kW Rated current Coil voltage(VAC)
220V/230 380V/400V 415V 440V
LT3-D25A 11 15 15 15 25A 400
LT3-D32A 15 18.5 18.5 18.5 32A 400
LT3-D40A 18.5 22 22 22 40A 400
LT3-D65A 30 55 55 55 65A 400
LT3-D95A 37 75 75 75 95A 400

Note:It is necessary that thermal protection with suitable range is mounted to protect the controlled motor.The shown values of magnetic starters are for normal regimes for motor control,for hard operation regimes are chosen starters which correspond to the current rating of the motor
Type designation(without a box) Overall dimensions(mm)
heighet width depth
LT3B-D25A 370 240 160
LT3B-D32A 370 240 160
LT3B-D40A 470 265 160
LT3B-D65A 470 265 160
LT3B-D95A 470 265 160


Type designation(without a box) Rated capacity kW Rated current Coil voltage(VAC)
220V/230 380V/400V 415V 440V
LT3B-D25A 11 15 15 15 25A 400
LT3B-D32A 15 18.5 18.5 18.5 32A 400
LT3B-D40A 18.5 22 22 22 40A 400
LT3B-D65A 30 55 55 55 65A 400
LT3B-D95A 37 75 75 75 95A 400

Note:It is necessary that thermal protection with suitable range is mounted to protect the controlled motor.The shown values of magnetic starters are for normal regimes for motor control.for hard operation regimes are chose starters which correspond to the current rating of the motor
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