How to Select and Size a Soft Starter for a Motor
How to size a soft starter correctly by full-load current, IEC 60947-4-2 duty class, starting torque against the load, control method, wiring topology and...
Schneider Electric ATS490C14Y Altivar Soft Starter ATS490, 140 A, 208-690V AC, up to 75 kW at 400V.
The Schneider Electric ATS490C14Y is a three-phase Altivar Soft Starter from the ATS490 range, rated 140 A continuous (normal duty) on a 208-690 V AC supply. It starts and stops asynchronous motors up to 75 kW at 400 V (55 kW in heavy duty), using torque control instead of a fixed voltage ramp. Safe Torque Off and a native Modbus TCP/EtherNet/IP port support supervised, cybersecure motor control from the same enclosure.
At 140 A normal duty, the ATS490C14Y covers motors up to 75 kW at 400 V; size on the heavy-duty rating (110 A) instead when the load cycles frequently or starts against high inertia, since the 400% Ie / 13 s overload window is the same but the continuous current is lower. Variable or quadratic-torque loads such as pumps, fans, compressors and conveyors fit the normal-duty figure; cyclic loads like crushers and grinders should be sized on the heavy-duty current instead. Motors above 75 kW at 400 V call for the next current frame up in the ATS490 range; motors below it can drop to the next frame down to avoid oversizing the starter.
| Range of Product | Altivar Soft Starter ATS490 |
|---|---|
| Product or Component Type | Soft starter |
| Product destination | Asynchronous motors |
| Product Specific Application | Process and infrastructures |
| Device short name | ATS490 |
| Phase | 3 phase |
| Utilisation category | AC-3A, AC-53A |
| Ue power supply voltage | 208...690 V AC - 15...10 %) |
| power supply frequency | 50...60 Hz - 20...20 % |
| [Ie] rated operational current | Normal duty 140 A in line 104 °F (40 °C)) |
| Service factor at Ie | 100 |
| rated current in heavy duty | 110 A at 104 °F (40 °C) heavy duty |
| Torque control | True |
| IP Degree of Protection | IP00 |
| Motor power kW | 37 kW 230 V in the motor supply line normal duty, 75 kW 400 V in the motor supply line normal duty, 75 kW 440 V in the motor supply line normal duty, 90 kW 500 V in the motor supply line normal duty, 90 kW 525 V in the motor supply line normal duty, 110 kW 660 V in the motor supply line normal duty, 110 kW 690 V in the motor supply line normal duty, 30 kW 230 V in the motor supply line heavy duty, 55 kW 400 V in the motor supply line heavy duty, 55 kW 440 V in the motor supply line heavy duty, 75 kW 500 V in the motor supply line heavy duty, 75 kW 525 V in the motor supply line heavy duty, 90 kW 660 V in the motor supply line heavy duty, 90 kW 690 V in the motor supply line heavy duty, 75 kW 230 V to the motor delta terminals normal duty, 110 kW 400 V to the motor delta terminals normal duty, 55 kW 230 V to the motor delta terminals heavy duty, 90 kW 400 V to the motor delta terminals heavy duty |
| Maximum Horse Power Rating | 40 hp 208 V normal duty, 50 hp 230 V normal duty, 100 hp 460 V normal duty, 125 hp 575 V normal duty, 30 hp 208 V heavy duty, 40 hp 230 V heavy duty, 75 hp 460 V heavy duty, 100 hp 575 V heavy duty |
| With safety function Safe torque off (STO) | True |
| Safe Torque Off (STO) | STO (safe torque off): SIL 1 conforming to IEC 61508, STO (safe torque off): PL c/category 2 conforming to ISO 13849 |
| Cybersecurity functions | True |
| Cybersecurity level and standard | Security level (SL) 1 IEC 62443-4-2 |
| Communication Port Protocol | Modbus serial, Modbus TCP/EtherNet/IP |
| Option card | Communication module CANopen daisy chain, Communication module CANopen Sub-D, Communication module CANopen open style, Communication module Profibus DP V1, Communication module PROFINET |
| Device connection | In the motor supply line, Inside delta |
|---|---|
| Overload current profile | 400 % Ie for 13 s |
| On-load factor | 50 % |
| Operating cycles/hour | 10 cyc/h |
| [Us] control circuit voltage | 110...230 V AC 50-60 Hz - 15...10 % |
| Apparent power | 80 VA |
| Integrated motor overload protection | True |
| motor thermal protection class | Class 10E |
| Protection type | Phase failure mains, Thermal protection starter, Thermal protection motor, Current overload motor, Motor underload motor, Excessive acceleration time motor, Motor phase loss detection motor, Protection against line phase inversion mains, External thermal protection motor, Protection delta inside wiring starter, Short-circuit between motor phase and earth motor |
| current limiting %In (5 x Ie maximum) | 150…700 % |
| [In] Rated current pwr loss specifctn | 140 A |
| Power loss static current independent | 19 W |
| Power loss per device current dependent | 26 W |
| Power loss during starting | 1651 W during starting at 40 °C at 400% Ie |
| Standards | EN/IEC 60947-4-2, UL 60947-4-2, IEC 60664-1 |
| Product Certifications | CE, cULus, UKCA, RCM, CCC, DNV, ATEX, EAC, KC |
| Marking | CE, CULus, UKCA, RCM, CCC, ATEX, EAC, KC |
| [Uc] control circuit voltage | 24 V DC |
| Discrete input number | 5 |
| Discrete input type | DI1) digital input, 4.4 kOhm, DI2) digital input, 4.4 kOhm, DI3) digital input, 4.4 kOhm, DI4) digital input, 4.4 kOhm, STO) digital input, > 1 kOhm |
| Input compatibility | DI1 discrete input level 1 PLC EN/IEC 61131-2, DI2 discrete input level 1 PLC EN/IEC 61131-2, DI3 discrete input level 1 PLC EN/IEC 61131-2, DI4 discrete input level 1 PLC EN/IEC 61131-2, STO discrete input level 1 PLC EN/IEC 61131-2 |
| Discrete input logic | Digital input DI1 0... 11 V, >= 5 mA, Digital input DI2 0... 11 V, >= 5 mA, Digital input DI3 0... 11 V, >= 5 mA, Digital input DI4 0... 11 V, >= 5 mA, Digital input STO 0... 11 V, >= 5 mA |
| Relay output number | 3 |
| Relay output type | Relay outputs R1A, R1C NO, Relay outputs R2A, R2C NO, Relay outputs R3A, R3C NO |
| Minimum switching current | 100 mA 12 V DC relay outputs |
| Maximum switching current | Relay outputs 2 A / 250 V AC for AC-15 100000 cycles following IEC 60947-5-1, Relay outputs 2 A / 30 V DC for DC-13 150000 cycles following IEC 60947-5-1 |
| Discrete output number | 2 |
| Discrete output type | Programmable digital output DQ1 <= 30 V 100 mA, Programmable digital output DQ2 <= 30 V 100 mA |
| Output compatibility | Open collector level 1 PLC IEC 65A-68 |
| Analogue input number | 1 |
| Analogue input type | AI1/PTC1 : PTC/PT 100/PT 1000/KTY84 temperature probe, PTC2 : PTC/PT 100/PT 1000/KTY84 temperature probe, PTC3 : PTC/PT 100/PT 1000/KTY84 temperature probe |
| Analogue output number | 1 |
| Analogue output type | Current output AQ1 : 0...20 mA/4...20 mA , impedance< 500 Ohm, Voltage output AQ1 : 0...10 V , impedance> 470 Ohm |
| Communication port protocol | Modbus serial, Modbus TCP/EtherNet/IP |
| Connector type | 1 RJ45 for connecting Modbus serial, 1 RJ45 for connecting Modbus TCP/EtherNet/IP |
| Physical interface | 2-wire RS 485, 100-BASE-TX category 5 or industrial Ethernet |
| Transmission frame | RTU, TCP/UDP |
| Transmission Rate | 4.8…38.4 kbps, 100 BASE TX |
| Data format | 8 bits, configurable odd, even or no parity 1or 2 stop |
| Number of addresses | 0…247 Modbus serial |
| Method of access | Slave Modbus serial |
| Type of polarization | No impedance Modbus serial |
| Display screen available | True |
| Operating position | Vertical +/- 10 degree |
| Height | 14.02 in (356 mm) |
| Width | 6.3 in (160 mm) |
| Depth | 9.3 in (235 mm) |
| Net Weight | 22.05 lb(US) (10 kg) |
| internal bypass | True |
| Function Available | Pre-heating, Smoke extraction, Second motor set, Deceleration with torque control, Braking, Boost, Line contactor control, Reverse contactor control, Anti-jam, Jog, Borehole pump starting, Condition monitoring, Power monitoring, Cybersecure firmware update |
| material declaration | True |
| Electromagnetic compatibility | Conducted and radiated emissions level A conforming to IEC 60947-4-2, Damped oscillating waves level 3 conforming to IEC 61000-4-18, Electrostatic discharge level 3 conforming to IEC 61000-4-2, Immunity to electrical transients level 4 conforming to IEC 61000-4-4, Immunity to radiated radio-electrical interference level 3 conforming to IEC 61000-4-3, Voltage/current impulse level 3 conforming to IEC 61000-4-5, Immunity to conducted interference caused by radio-electrical fields level 3 conforming to EN/IEC 61000-4-6 |
|---|---|
| Pollution degree | Level 3 |
| [Uimp] rated impulse withstand voltage | 6 kV |
| [Ui] Rated Insulation Voltage | 690 V |
| Environmental class (during operation) | Class 3C3 according to IEC 60721-3-3, Class 3S3 according to IEC 60721-3-3 |
| Ambient air temperature for operation | -13…104 °F (-25…40 °C) (without derating), 104…140 °F (40…60 °C) (with current derating of 1 % per °C above 40 °C) |
| Ambient Air Temperature for Storage | -40…158 °F (-40…70 °C) |
| Ambient air transport temperature | -40…158 °F (-40…70 °C) |
| Operating altitude | <= 6561.68 ft (2000 m) without derating, > 2000...4800 m with current derating 1 % per 100 m above 2000 m |
| Relative humidity | 5…95 % without condensation or dripping water EN/IEC 60068-2-3 |
| Maximum deflection under vibratory load (during operation) | 1.5 mm at 2...13 Hz |
| Maximum deflection under vibratory load (during storage) | 1.75 mm at 2...9 Hz |
| Maximum deflection under vibratory load (during transport) | 1.75 mm at 2...9 Hz |
| Maximum acceleration under vibrational stress (during operation) | 1 gn at 13…200 Hz |
| Maximum acceleration under vibratory load (during storage) | 1 gn at 9…200 Hz, 1.5 gn at 200…500 Hz |
| Maximum acceleration under vibratory load (during transport) | 1 gn at 9…200 Hz, 1.5 gn at 200…500 Hz |
| Maximum acceleration under shock impact (during operation) | 15 gn at 11 ms |
| Maximum acceleration under shock load (during storage) | 10 gn at 11 ms |
| Maximum acceleration under shock load (during transport) | 10 gn at 11 ms |
| Part number | ATS490C14Y |
|---|---|
| Type designation | ATS490 |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 3606486948842 |
| Warranty (in months) | 18 |
|---|
| Country of origin | ID |
|---|---|
| Shipping weight | 10.0 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of ATS490 is 140 A.
The rated operational voltage of ATS490 is 208–690 V AC.
The rated motor power of ATS490 is 75 kW.
The tariff (HS) code on file for ATS490 is 853710.
The EAN (GTIN) of ATS490 is 3606486948842.
ATS490 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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