Soft Starts

A Soft start motor is a device used typically with electrical AC motors.

How do they work?

They work by helping reduce the torque and load in the power up and electrical current surges that are typical with motors during their start-up phase. The soft start only does this temporary however as it is only needed primarily during start-up

Features and benefits:
•Can control multiple phases of power up


•Control of starting toque in machinery


•Motor power ratings ranging up to 700 kW and above


•Inline contactors are not necessary if the machine it is used on is electrically isolated


•Control starting times of the soft start


•Voltage boost functions available to control over toque


•Can be mounted to DIN, panels or simply snap on capabilities





Where might I use one?
•Smaller size cranes


•Automatic doors/gates


•Fans or pumps


•Conveyor belts


•Compressors

...
Read more Read less

Filters

Viewing 1 - 20 of 306 products
Results per page
Description Price Phase Supply Voltage Current Rating Voltage Rating Control Voltage Power Rating IP Rating Overall Length Overall Width Overall Depth Minimum Operating Temperature Maximum Operating Temperature Mounting Type Series
RS Stock No. 209-6340
BrandRS PRO
$323.71
Each
units
1 230 V ac 12 A 230 V ac - 2.2 kW - 120mm 45mm 70mm 0°C +45°C DIN Rail -
RS Stock No. 330-5358
Mfr. Part No.SSC-25
$118.61
Each
units
1 230 V ac 25 A 230 V - - - - - - -20°C +85°C - -
RS Stock No. 505-5847
Mfr. Part No.ATS01N232QN
$1,689.00
Each
units
3 380 → 415 V 32 A 415 V 24 V dc, 110 → 240 V ac 15 kW IP20 130.7mm 45mm 175mm -10°C +40°C - ATS01
RS Stock No. 325-485
Mfr. Part No.1SFA896107R7000
BrandABB
$481.80
Each
units
3 208 → 600 V 16 A 600 V 100 → 240 V ac 7.5 kW IP20 113.5mm 45mm 140mm -25°C +60°C - PSR
RS Stock No. 820-0986
Mfr. Part No.ATS01N125FT
$371.63
Each
units
1, 3 110 → 480 V 25 A 110 → 480 V 240 V ac 11 kW IP20 124mm 45mm 131mm -10 (Without Derating) °C, +40 (With Derating) °C +40 (Without Derating) °C, +50 (With Derating) °C - ATS01
RS Stock No. 656-6562
Mfr. Part No.1SFA896110R7000
BrandABB
$878.37
Each
units
3 208 → 600 V 37 A 600 V 100 → 240 V ac 18.5 kW IP10, IP20 153mm 54mm 187mm -25°C +60°C - PSR
RS Stock No. 420-479
Mfr. Part No.3RW4047-1BB14
BrandSiemens
$2,557.69
Each
units
3 200 → 480 V ac 106 A 480 V ac 110 → 230 V ac/dc 55 kW IP00 188mm 70mm 170mm -25°C +60°C - 3RW40
RS Stock No. 710-6388
Mfr. Part No.ATS22D47Q
$1,759.76
Each
units
3 230 → 440 V 47 A 440 V 220 → 230 V 22 kW IP20 209mm 130mm 265mm -10°C +40°C - ATS22
RS Stock No. 478-4730
Mfr. Part No.ATS01N222QN
$1,146.00
Each
units
3 380 → 415 V 22 A 415 V - 11 kW IP20 130.7mm 45mm 175mm -10°C +40°C - ATS01
RS Stock No. 746-4965
Mfr. Part No.3RW4055-6BB44
BrandSiemens
$1,580.60
Each
units
3 - 134 A 400 V 230 V ac 75 kW IP00 250mm 120mm 198mm - - - 3RW40
RS Stock No. 478-4768
Mfr. Part No.ATS01N206QN
$267.83
Each
units
3 380 → 415 V 6 A 415 V 24 V dc, 110 → 240 V ac 2.2 kW IP20 130.7mm 45mm 145mm -10°C +40°C - ATS01
RS Stock No. 766-2535
Mfr. Part No.DS7-342SX007N0-N
BrandEaton
$315.98
Each
units
3 230 → 460 V ac 7 A 460 V ac 110 → 230 V ac 3 kW IP20 45mm 95mm 130mm 0°C +40°C - DS7
RS Stock No. 608-6993
Mfr. Part No.ATS48C11Q
$2,607.08
Each
units
3 230 → 415 V 110 A 415 V 220 → 415 V 55 kW IP20 235mm 190mm 290mm -10°C +40°C - ATS48
RS Stock No. 478-4702
Mfr. Part No.ATS01N106FT
$192.73
Each
units
3 110 → 480 V 6 A 480 V 24 V dc, 110 → 240 V ac 2.2 kW IP20 100.4mm 22.5mm 100mm -10°C +40°C - ATS01
RS Stock No. 608-7019
Mfr. Part No.ATS48C17Q
$4,321.40
Each
units
3 230 → 415 V 170 A 415 V 220 → 415 V 90 kW IP00 265mm 200mm 340mm -10°C +40°C - ATS48
RS Stock No. 420-502
Mfr. Part No.3RW4026-1BB14
BrandSiemens
$714.17
Each
units
3 200 → 480 V ac 25 A 480 V ac 110 → 230 V ac/dc 11 kW IP20 154mm 45mm 125mm -25°C +60°C - 3RW40
RS Stock No. 851-7648
Mfr. Part No.1SFA896111R1100
BrandABB
$897.85
Each
units
3 600 V 45 A 208 → 600 V ac 24 V ac/dc 22 kW IP10 54mm 153mm 187mm -20°C +60°C - PSR
RS Stock No. 656-6578
Mfr. Part No.1SFA896111R7000
BrandABB
$970.62
Each
units
3 208 → 600 V 45 A 600 V 100 → 240 V ac 22 kW IP10, IP20 153mm 54mm 187mm -25°C +60°C - PSR
RS Stock No. 608-7069
Mfr. Part No.ATS48D22Q
$1,400.15
Each
units
3 230 → 415 V 22 A 415 V 220 → 415 V 11 kW IP20 190mm 160mm 275mm -10°C +40°C - ATS48
RS Stock No. 505-5825
Mfr. Part No.ATS01N209QN
$327.90
Each
units
3 380 → 415 V 9 A 415 V 24 V dc, 110 → 240 V ac 4 kW IP20 130.7mm 45mm 145mm -10°C +40°C - ATS01
Related Products
A range of ADXL series soft starters from ...
Description:
A range of ADXL series soft starters from Lovato Electric. These soft starters allow control of the start and stop of 3 phase asynchronous motors on two-phases with built-in bypass. The ADXL soft starters are equipped with a backlight display ...
Soft starters are robust electronic control devices for ...
Description:
Soft starters are robust electronic control devices for starting three-phase asynchronous machines smoothly. Two of the three motor phases are influenced by the IR9027 by phase control in such a way that the current in these phases rises steadily. The ...
An electronic soft start for dc permanent magnet ...
Description:
An electronic soft start for dc permanent magnet and wound field motors running from battery or rectified smoothed dc supplies. The starting current and acceleration are adjustable giving a cost effective method of switching low voltage motors. Reversing versions can ...
The Altistart 48 soft start soft stop unit ...
Description:
The Altistart 48 soft start soft stop unit is a controller with 6 thyristors which is used for the torque controlled soft starting and stopping of three phase squirrel cage asynchronous motors. Exclusive Altistart torque control (patented by Schneider Electric)Constant ...