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
SGD257.36
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. 135-9721
BrandRS PRO
SGD381.50
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. 418-3610
BrandRS PRO
SGD171.13
Each
units
- - 24 A 24 V dc - - - 84mm 79mm 48mm - - Panel -
RS Stock No. 212-8683
BrandRS PRO
SGD403.08
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. 135-9718
BrandRS PRO
SGD418.53
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. 209-6356
BrandRS PRO
SGD233.64
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. 212-8699
BrandRS PRO
SGD420.99
Each
units
3 380 → 460 V ac 12 A 460 V ac - 5.5 kW - - - - - - DIN Rail -
RS Stock No. 135-9717
BrandRS PRO
SGD299.14
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. 135-9716
BrandRS PRO
SGD272.49
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. 418-3626
BrandRS PRO
SGD228.08
Each
units
- - 24 A 12 V dc - - - 122mm 79mm 48mm - - Panel -
RS Stock No. 209-6362
BrandRS PRO
SGD315.58
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
SGD216.22
Each
units
- - 24 A 24 V dc - - - 122mm 79mm 48mm - - Panel -
RS Stock No. 135-9720
BrandRS PRO
SGD694.47
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. 135-9715
BrandRS PRO
SGD255.30
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. 135-9719
BrandRS PRO
SGD569.51
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. 478-4730
Mfr. Part No.ATS01N222QN
SGD467.45
Each
units
3 380 → 415 V 22 A 415 V - 11 kW IP20 130.7mm 45mm 175mm -10°C +40°C Screw Fixing ATS01
RS Stock No. 505-5825
Mfr. Part No.ATS01N209QN
SGD349.42
Each
units
3 380 → 415 V 9 A 415 V 110 → 240 V ac, 24 V dc 4 kW IP20 130.7mm 45mm 145mm -10°C +40°C - ATS01
RS Stock No. 746-4943
Mfr. Part No.3RW4027-1BB04
BrandSiemens
SGD644.88
Each
units
3 - 32 A 400 V 24 V ac/dc 15 kW IP20 154mm 45mm 125mm - - - 3RW40
RS Stock No. 608-7097
Mfr. Part No.ATS48D47Q
SGD1,416.84
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. 820-1009
Mfr. Part No.ATS48C41Y
SGD8,306.15
Each
units
3 208 → 690 V ac 410 A 208 → 690 V ac 110 → 230 V ac 400 kW IP00, IP20 400mm 670mm 300mm -10°C +40°C - ATS48
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