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 CAD Drawing Mounting Type
RS Stock No. 505-5847
Mfr. Part No.ATS01N232QN
£264.00
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 - -
RS Stock No. 209-6340
BrandRS PRO
£147.85
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. 420-479
Mfr. Part No.3RW4047-1BB14
BrandSiemens
£748.93
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 - -
RS Stock No. 418-6877
Mfr. Part No.150-C37NBD
£526.00
Each
Units
3 200 → 460 V ac 37 A 460 V ac 100 → 240 V ac 18.5 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - -
RS Stock No. 420-514
Mfr. Part No.3RW4037-1BB14
BrandSiemens
£525.57
Each
Units
3 200 → 480 V ac 63 A 480 V ac 110 → 230 V ac/dc 30 kW IP00 170mm 55mm 170mm -25°C +60°C - -
RS Stock No. 420-495
Mfr. Part No.3RW4028-1BB14
BrandSiemens
£372.00
Each
Units
3 200 → 480 V ac 38 A 480 V ac 110 → 230 V ac/dc 18.5 kW IP20 125mm 45mm 154mm -25°C +60°C - -
RS Stock No. 330-5358
Mfr. Part No.SSC-25
£36.44
Each
Units
1 230 V ac 25 A 230 V - - - - - - -20°C +85°C - -
RS Stock No. 478-4730
Mfr. Part No.ATS01N222QN
£211.00
Each
Units
3 380 → 415 V 22 A 415 V - 11 kW IP20 130.7mm 45mm 175mm -10°C +40°C - -
RS Stock No. 477-4935
Mfr. Part No.150-C85NBD
£1,140.00
Each
Units
3 200 → 460 V ac 85 A 460 V ac 100 → 240 V ac 45 kW IP2X 130mm 72mm 206mm -5°C +50°C - -
RS Stock No. 608-6993
Mfr. Part No.ATS48C11Q
£1,201.00
Each
Units
3 230 → 415 V 110 A 415 V 220 → 415 V 55 kW IP20 235mm 190mm 290mm -10°C +40°C - -
RS Stock No. 746-4965
Mfr. Part No.3RW4055-6BB44
BrandSiemens
£793.28
Each
Units
3 - 134 A 400 V 230 V ac 75 kW IP00 250mm 120mm 198mm - - - -
RS Stock No. 478-4768
Mfr. Part No.ATS01N206QN
£152.00
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 - -
RS Stock No. 420-524
Mfr. Part No.3RW4038-1BB14
BrandSiemens
£610.15
Each
Units
3 200 → 480 V ac 72 A 480 V ac 110 → 230 V ac/dc 37 kW IP00 170mm 55mm 170mm -25°C +60°C - -
RS Stock No. 608-7003
Mfr. Part No.ATS48C14Q
£1,439.00
Each
Units
3 230 → 415 V 140 A 415 V 220 → 415 V 75 kW IP00 265mm 200mm 340mm -10°C +40°C - -
RS Stock No. 477-4929
Mfr. Part No.150-C60NBD
£873.00
Each
Units
3 200 → 460 V ac 60 A 460 V ac 100 → 240 V ac 30 kW IP2X 130mm 72mm 206mm -5°C +50°C - -
RS Stock No. 418-6906
Mfr. Part No.150-C16NBR
£313.00
Each
Units
3 200 → 460 V ac 16 A 460 V ac 24 V ac/dc 7.5 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - -
RS Stock No. 418-6855
Mfr. Part No.150-C25NBD
£348.00
Each
Units
3 200 → 460 V ac 25 A 460 V ac 100 → 240 V ac 11 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - -
RS Stock No. 418-6934
Mfr. Part No.150-C30NBR
£425.00
Each
Units
3 200 → 460 V ac 30 A 460 V ac 24 V ac/dc 15 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - -
RS Stock No. 420-518
Mfr. Part No.3RW4036-1BB14
BrandSiemens
£442.63
Each
Units
3 200 → 480 V ac 45 A 480 V ac 110 → 230 V ac/dc 22 kW IP00 170mm 55mm 170mm -25°C +60°C - -
RS Stock No. 478-4780
Mfr. Part No.ATS01N212QN
£190.00
Each
Units
3 380 → 415 V 12 A 415 V 24 V dc, 110 → 240 V ac 5.5 kW IP20 130.7mm 45mm 145mm -10°C +40°C - -
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