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. 851-7638
Mfr. Part No.1SFA896107R1100
BrandABB
€223.12
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. 505-5910
Mfr. Part No.ATSU01N222LT
€211.65
Each
units
3 200 480 V 22 A 480 V 24 V dc 11 kW IP20 113mm 45mm 154mm -10°C +40°C - ATSU01
RS Stock No. 505-5803
Mfr. Part No.ATS01N103FT
€148.55
Each
units
3 110 480 V 3 A 480 V 110 240 V ac, 24 V dc 1.1 kW IP20 100.4mm 22.5mm 100mm -10°C +40°C - ATS01
RS Stock No. 820-0986
Mfr. Part No.ATS01N125FT
€162.47
Each
units
1, 3 110 → 480 V 25 A 110 → 480 V 240 V ac 11 kW IP20 124mm 45mm 131mm +40 (With Derating) °C, -10 (Without Derating) °C +40 (Without Derating) °C, +50 (With Derating) °C - ATS01
RS Stock No. 418-6883
Mfr. Part No.150-C3NBR
€308.10
Each
units
3 200 460 V ac 3 A 460 V ac 24 V ac/dc 1.1 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - SMC-3
RS Stock No. 746-4962
Mfr. Part No.3RW4038-1TB04
BrandSiemens
€940.86
Each
units
3 - 72 A 400 V 24 V ac/dc 37 kW IP00 170mm 55mm 170mm - - - 3RW40
RS Stock No. 505-5819
Mfr. Part No.ATS01N109FT
€159.79
Each
units
3 110 480 V 9 A 480 V 24 V dc, 110 240 V ac 4 kW IP20 130.7mm 45mm 145mm -10°C +40°C - ATS01
RS Stock No. 375-3791
Mfr. Part No.BL9025 3AC200-480V 50/60Hz 11kW
BrandDold
€439.15
Each
units
3 200 → 480 V ac 25 A 480 V ac 24 → 480 V ac/dc 15 kW IP20, IP40 121mm 90mm 85mm 0°C +40°C - BL9025
RS Stock No. 440-8981
Mfr. Part No.3RW3003-1CB54
BrandSiemens
€186.82
Each
units
3 200 → 400 V ac 3 A 400 V ac 24 → 230 V ac/dc 1.1 kW IP20 120mm 22.5mm 100mm -25°C +60°C - 3RW30
RS Stock No. 732-8346
Mfr. Part No.1SFA897105R7000
BrandABB
€810.40
Each
units
3 - 45 A 600 V 100 250 V 18.5 kW IP00, IP20 245mm 90mm 185.5mm -25°C +60°C - PSE
RS Stock No. 418-6899
Mfr. Part No.150-C9NBR
€332.80
Each
units
3 200 460 V ac 9 A 460 V ac 24 V ac/dc 4 kW IP2X 100mm 44.8mm 139.7mm -5°C +50°C - SMC-3
RS Stock No. 732-8349
Mfr. Part No.1SFA897103R7000
BrandABB
€567.07
Each
units
3 - 30 A 600 V 100 250 V 11 kW IP00, IP20 245mm 90mm 185.5mm -25°C +60°C - PSE
RS Stock No. 420-502
Mfr. Part No.3RW4026-1BB14
BrandSiemens
€349.09
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. 766-2513
Mfr. Part No.DS7-340SX009N0-N
BrandEaton
€274.04
Each
units
3 230 → 460 V ac 9 A 460 V ac 24 V ac/dc 4 kW IP20 45mm 95mm 130mm 0°C +40°C - DS7
RS Stock No. 746-4940
Mfr. Part No.3RW4026-1BB04
BrandSiemens
€363.53
Each
units
3 - 25 A 400 V 24 V ac/dc 11 kW IP20 154mm 45mm 125mm - - - 3RW40
RS Stock No. 710-6363
Mfr. Part No.ATS22D17Q
€391.07
Each
units
3 230 → 440 V 17 A 440 V 220 → 230 V 7.5 kW IP20 209mm 130mm 265mm -10°C +40°C - ATS22
RS Stock No. 820-0700
Mfr. Part No.ATS01N232LU
€388.88
Each
units
3 200 240 V ac 32 A 230 V ac 120 V ac 7.5 kW IP20 45mm 154mm 135mm -10°C +40 (Without Derating) °C, +50 (With Derating) °C - ATS01
RS Stock No. 746-4919
Mfr. Part No.3RW3026-1BB04
BrandSiemens
€277.81
Each
units
3 - 25 A 400 V 24 V ac/dc 11 kW IP20 151mm 45mm 125mm - - - 3RW30
RS Stock No. 766-2526
Mfr. Part No.DS7-340SX016N0-N
BrandEaton
€358.67
Each
units
3 230 → 460 V ac 16 A 460 V ac 24 V ac/dc 7.5 kW IP20 45mm 118mm 150mm 0°C +40°C - DS7
RS Stock No. 766-2532
Mfr. Part No.DS7-342SX004N0-N
BrandEaton
€241.80
Each
units
3 230 → 460 V ac 4 A 460 V ac 110 → 230 V ac 1.5 kW IP20 45mm 95mm 130mm 0°C +40°C - DS7
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