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. 418-3610
BrandRS PRO
$187.61
Each
units
- - 24 A 24 V dc - - - 84mm 79mm 48mm - - Panel -
RS Stock No. 703-5135
Mfr. Part No.1SFA896115R7000
BrandABB
$1,215.09
Each
units
3 208 → 600 V 105 A 600 V 100 → 240 V ac 55 kW IP10, IP20 180mm 70mm 220mm -25°C +60°C - PSR
RS Stock No. 505-5803
Mfr. Part No.ATS01N103FT
$208.86
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. 327-7809
Mfr. Part No.IL9017 AC230V 1.5kW
BrandDold
$212.80
Each
units
1 230 V ac 10 A 230 V - 1.5 kW IP20, IP40 61mm 35mm 90mm 0°C +55°C - -
RS Stock No. 478-4780
Mfr. Part No.ATS01N212QN
$881.00
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 - ATS01
RS Stock No. 505-5819
Mfr. Part No.ATS01N109FT
$207.65
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. 325-479
Mfr. Part No.1SFA896106R7000
BrandABB
$380.02
Each
units
3 208 → 600 V 12 A 600 V 100 → 240 V ac 5.5 kW IP20 113.5mm 45mm 140mm -25°C +60°C - PSR
RS Stock No. 608-7081
Mfr. Part No.ATS48D38Q
$1,638.92
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. 710-6405
Mfr. Part No.ATS22D75Q
$1,226.48
Each
units
3 230 → 440 V 75 A 440 V 220 → 230 V 37 kW IP20 247mm 145mm 295mm -10°C +40°C - ATS22
RS Stock No. 608-7126
Mfr. Part No.ATS48D88Q
$2,501.93
Each
units
3 230 → 415 V 88 A 415 V 220 → 415 V 45 kW IP20 235mm 190mm 290mm -10°C +40°C - ATS48
RS Stock No. 710-6394
Mfr. Part No.ATS22D62Q
$1,167.87
Each
units
3 230 → 440 V 62 A 440 V 220 → 230 V 30 kW IP20 247mm 145mm 295mm -10°C +40°C - ATS22
RS Stock No. 746-4912
Mfr. Part No.3RW3018-1BB04
BrandSiemens
$544.95
Each
units
3 - 17.6 A 400 V 24 V ac/dc 7.5 kW IP20 151mm 45mm 95mm - - - 3RW30
RS Stock No. 420-514
Mfr. Part No.3RW4037-1BB14
BrandSiemens
$1,432.68
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. 851-7644
Mfr. Part No.1SFA896110R1100
BrandABB
$712.18
Each
units
3 600 V 37 A 208 → 600 V ac 24 V ac/dc 18.5 kW IP10 54mm 153mm 187mm -20°C +60°C - PSR
RS Stock No. 746-4975
Mfr. Part No.3RW4074-6BB44
BrandSiemens
$3,979.53
Each
units
3 - 280 A 400 V 230 V ac 160 kW IP00 278mm 160mm 230mm - - - 3RW40
RS Stock No. 152-772
Mfr. Part No.1SFA896109R7000
BrandABB
$536.45
Each
units
3 208 → 600 V 30 A 600 V 100 → 240 V ac 15 kW IP20 128mm 45mm 160mm -25°C +60°C - PSR
RS Stock No. 420-495
Mfr. Part No.3RW4028-1BB14
BrandSiemens
$1,013.13
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
RS Stock No. 746-4915
Mfr. Part No.3RW3018-1BB14
BrandSiemens
$477.26
Each
units
3 - 17.6 A 400 V 110 → 230 V ac/dc 7.5 kW IP20 151mm 45mm 95mm - - - 3RW30
RS Stock No. 608-7003
Mfr. Part No.ATS48C14Q
$2,536.43
Each
units
3 230 → 415 V 140 A 415 V 220 → 415 V 75 kW IP00 265mm 200mm 340mm -10°C +40°C - ATS48
RS Stock No. 710-6451
Mfr. Part No.ATS22C21Q
$4,429.26
Each
units
3 230 → 440 V 210 A 440 V 220 → 230 V 110 kW IP00 299mm 206mm 425mm -10°C +40°C - ATS22
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