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Motor Soft Starter

Motor Soft Starter
Motor Soft Starter
Product Code : me 21
Brand Name : MAX Altistart 48
Product Description
Altistart 48 soft starter is a high performance soft starter using 6 thyristors for controlled starting of 3 phase a synchronous squirrel cage induction motors. It provides, Torque Controlled starting & stopping, Electronic thermal overload protection, mechanical protection to driven machine, increased life to mechanical power, transmitting gadgets and driven machinery and also reduced stress on power supply network.


  • Separate set of terminals are integrated to terminate cables going to bypass contactor
  • Even in bypass mode inbuilt Electronic thermal over-load remains in circuit
  • No external CT required for current measurement

Technical Specification

Control method

Torque Control (Schneider's patent)

Rated input Voltage

200V - 15% ............415V+10%

Rated input Frequency

50 / 60 Hz +/– 5% (automatic)


50 or 60 Hz +/– 20% (configurable)

Normal current

17 to 1200 A

Current Adjustment

The motor nominal current (In) is adjustable from 0.4 to 1.3 times the starter current rating.

Maximum starting current programmable from 1.5 to 7 times the motor nominal current,

limited to 5 times the starter current limit


Control Inputs / Outputs

4 logic inputs, impedance 4.3K.

Power Supply 24V max. 8mA

2 Logic outputs, 24V Max. output current 200mA if supplied externally

1Analogue output (0-20mA or 4-20mA), Max. load impedance 500, Accuracy +/– 5%


Acc. / Dec. time

1 - 60 sec.(Programmable individually)

Motor Protection

Inbuilt Electronic Thermal protection (selectable for starting classes

2, 10A, 10, 15, 20, 25 & 30),

stall protection, under load protection (to avoid dry run

of pump), reversal of rotation (important

for pump)


Starter Protection

Short circuit, undervoltage, phase unbalance, phase failure

Standard Functions

Test on smaller motor, cascaded starting of several identical/different motors, starting

multiple motors in parallel




multidrop serial link port for RJ45 connector integrated in the starter

Transmission speed 4800, 9600 or 19200 bps. Max. 18 starters on a network.

The same port can be used for connection to a remote terminal or PC


Conformity to standards

IEC 947-4-2, UL, CSA approved & CE marked

Degree of protection

IP 20 (ATS48D17Q to 48C1


IP 00 (ATS48C1

1Q to 48M12Q)


Ambient temp.

0° C to 40° C without derating.

Above 40° C upto 60° C with derating @ 2% per degree rise in temperature


Max. Relative humidity

95% without condensation or dripping wate

Max. operating altitude

1000m without derating.

(Above this, current derating applicable @ 2.2% per additional 100m) Max. 2000m


Operating position





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