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. 209-6340
BrandRS PRO
£132.66
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. 418-3626
BrandRS PRO
£102.60
Each
Units
- - 24 A 12 V dc - - - 122mm 79mm 48mm - - Panel -
RS Stock No. 212-8683
BrandRS PRO
£175.64
Each
Units
3 380 → 460 V ac 5.5 A 460 V ac - 2.2 kW - 120mm 45mm 75mm 0°C +40°C DIN Rail -
RS Stock No. 209-6356
BrandRS PRO
£113.98
Each
Units
3 380 → 460 V ac 5.5 A 460 V ac - 2.2 kW IP20 120mm 45mm 75mm 0°C +40°C DIN Rail -
RS Stock No. 418-3610
BrandRS PRO
£76.00
Each
Units
- - 24 A 24 V dc - - - 84mm 79mm 48mm - - Panel -
RS Stock No. 212-8699
BrandRS PRO
£203.68
Each
Units
3 380 → 460 V ac 12 A 460 V ac - 5.5 kW - - - - - - DIN Rail -
RS Stock No. 209-6362
BrandRS PRO
£140.14
Each
Units
3 380 → 460 V ac 12 A 460 V ac - 5.5 kW IP20 120mm 45mm 75mm 0°C +40°C DIN Rail -
RS Stock No. 418-3632
BrandRS PRO
£102.60
Each
Units
- - 24 A 24 V dc - - - 122mm 79mm 48mm - - Panel -
RS Stock No. 135-9716
BrandRS PRO
£135.98
Each
Units
2 24 V dc 6.5 A 400 V ac 24 V dc 3 kW IP20 45mm 110mm 121mm 0°C +45°C DIN Rail, Snap-On -
RS Stock No. 135-9717
BrandRS PRO
£149.28
Each
Units
2 24 V dc 12 A 400 V ac 24 V dc 5.5 kW IP20 45mm 110mm 121mm 0°C +45°C DIN Rail, Snap-On -
RS Stock No. 135-9715
BrandRS PRO
£127.40
Each
Units
2 24 V dc 3.5 A 400 V ac 24 V dc 1.5 kW IP20 45mm 110mm 121mm 0°C +45°C DIN Rail, Snap-On -
RS Stock No. 135-9721
BrandRS PRO
£190.38
Each
Units
2 24 V dc 16 A 400 V ac 24 V dc 7.5 kW IP20 45mm 110mm 121mm 0°C +45°C DIN Rail, Snap-On -
RS Stock No. 135-9720
BrandRS PRO
£345.44
Each
Units
2 10 → 24 V dc 45 A 400 V ac 24 V dc 22 kW IP20 52.5mm 178mm 158mm 0°C +45°C Snap-On -
RS Stock No. 135-9719
BrandRS PRO
£284.20
Each
Units
2 10 → 24 V dc 32 A 400 V ac 24 V dc 15 kW IP20 45mm 173mm 158mm 0°C +45°C Snap-On -
RS Stock No. 135-9718
BrandRS PRO
£208.86
Each
Units
2 10 → 24 V dc 25 A 400 V ac 24 V dc 11 kW IP20 45mm 173mm 158mm 0°C +45°C Snap-On -
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 - ATS01
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 - 3RW40
RS Stock No. 418-6877
Mfr. Part No.150-C37NBD
£531.00
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 - SMC-3
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 - 3RW40
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 - 3RW40
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