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

...
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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. 505-5803
Mfr. Part No.ATS01N103FT
R 3,434.29
Each
units
3 110 → 480 V 3 A 480 V 24 V dc, 110 → 240 V ac 1.1 kW IP20 100.4mm 22.5mm 100mm -10°C +40°C - ATS01
RS stock no. 822-6008
Mfr. Part No.ATS48C17Y
R 50,537.48
Each
units
3 208 → 690 V 170 A 690 V 110 → 230 V 160 kW IP00 200mm 340mm 265mm - - - ATS48
RS stock no. 330-5358
Mfr. Part No.SSC-25
R 1,217.35
Each
units
1 230 V ac 25 A 230 V - - - - - - -20°C +85°C - -
RS stock no. 746-4965
Mfr. Part No.3RW4055-6BB44
BrandSiemens
R 17,100.00
Each
units
3 - 134 A 400 V 230 V ac 75 kW IP00 250mm 120mm 198mm - - - 3RW40
RS stock no. 851-7622
Mfr. Part No.1SFA896104R1100
BrandABB
R 2,625.63
Each
units
3 600 V 6.8 A 208 → 600 V ac 24 V ac/dc 3 kW IP20 45mm 114mm 140mm -20°C +60°C - PSR
RS stock no. 505-5904
Mfr. Part No.ATSU01N212LT
R 3,438.24
Each
units
3 200 → 480 V 12 A 480 V 24 V dc 5.5 kW IP20 113mm 45mm 154mm -10°C +40°C - ATSU01
RS stock no. 608-7097
Mfr. Part No.ATS48D47Q
R 23,176.60
Each
units
3 230 → 415 V 47 A 415 V 220 → 415 V 22 kW IP20 190mm 160mm 275mm -10°C +40°C - ATS48
RS stock no. 851-7638
Mfr. Part No.1SFA896107R1100
BrandABB
R 3,842.19
Each
units
3 600 V 16 A 208 → 600 V ac 24 V ac/dc 7.5 kW IP20 45mm 114mm 140mm -20°C +60°C - PSR
RS stock no. 746-4912
Mfr. Part No.3RW3018-1BB04
BrandSiemens
R 3,680.00
Each
units
3 - 17.6 A 400 V 24 V ac/dc 7.5 kW IP20 151mm 45mm 95mm - - - 3RW30
RS stock no. 608-7025
Mfr. Part No.ATS48C21Q
R 54,755.42
Each
units
3 230 → 415 V 210 A 415 V 220 → 415 V 110 kW IP00 265mm 320mm 380mm -10°C +40°C - ATS48
RS stock no. 857-7898
Mfr. Part No.RSE4812-B
R 4,569.65
Each
units
3 - 12 A 227 → 480 V ac 24 → 110 V ac/dc, 110 → 480 V ac 5.5 kW IP20 45mm 102.5mm 77.4mm -20°C +50°C - RSE
RS stock no. 209-6340
BrandRS PRO
R 2,612.61
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. 830-3060
Mfr. Part No.GV3P32
R 1,286.80
Each
units
1, 3 690 V ac 32 A 690 V ac - 15 kW IP20 132mm 55mm 136mm -20°C +60°C - GV3
RS stock no. 746-4956
Mfr. Part No.3RW4036-1BB04
BrandSiemens
R 9,540.00
Each
units
3 - 45 A 400 V 24 V ac/dc 22 kW IP00 170mm 55mm 170mm - - - 3RW40
RS stock no. 608-6993
Mfr. Part No.ATS48C11Q
R 34,497.07
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. 505-5881
Mfr. Part No.ATSU01N206LT
R 2,540.25
Each
units
3 200 → 480 V 6 A 480 V 24 V dc 3 kW IP20 113mm 45mm 154mm -10°C +40°C - ATSU01
RS stock no. 746-4975
Mfr. Part No.3RW4074-6BB44
BrandSiemens
R 24,046.29
Each
units
3 - 280 A 400 V 230 V ac 160 kW IP00 278mm 160mm 230mm - - - 3RW40
RS stock no. 212-8699
BrandRS PRO
R 3,917.95
Each
units
3 380 → 460 V ac 12 A 460 V ac - 5.5 kW - - - - - - DIN Rail -
RS stock no. 608-7081
Mfr. Part No.ATS48D38Q
R 22,096.66
Each
units
3 230 → 415 V 38 A 415 V 220 → 415 V 18.5 kW IP20 190mm 160mm 275mm -10°C +40°C - ATS48
RS stock no. 478-4730
Mfr. Part No.ATS01N222QN
R 4,198.68
Each
units
3 380 → 415 V 22 A 415 V - 11 kW IP20 130.7mm 45mm 175mm -10°C +40°C - ATS01