The AutomationDirect Soft Starter Selector

The AutomationDirect Soft Starter Selector is the definitive resource
to research, find and select soft start products for all types of design projects

Version 4.0.1 (Sept 2016)
Automation Direct Soft Starter Selector
Choose your product
 

Please select the size of your AC Induction Motor in Amps, kW or HP.

Table 430.250 of the NEC "NFPA 70"

Please select whether the Soft Starter is wired In Line or In The Delta.
When the Soft Starter is wired In The Delta, a smaller unit can often be selected.

In-line/normal
In-delta/6 wire

Please select the number of soft starts and soft stops per hour.

Please select the ambient temperature around the Soft Starter.

Please select the altitude the Soft Starter will be used at.

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Derived from: UL-508A "Standard for Safety: Industrial Control Panels" Table 50.1
Copyright © 2013 Underwriters Laboratories Inc.
AND from: NFPA 70-2017 National Electric Code (NEC) Table 430.250
"Full-Load Current, Three-Phase Alternating-Current Motors"
Copyright © 2016 National Fire Protection Association
AC Motor Horsepower Ratings vs
Full-load Motor Current
(For Induction-Type Squirrel Cage and Wound Rotor AC Motors)
Horsepower
(HP)
280 Volts
Three Phase
(Amps)
220-240 Volts
Three Phase
(Amps)
440-480 Volts
Three Phase
(Amps)
0.5 2.4 2.2 1.1
0.75 3.5 3.2 1.6
1 4.6 4.2 2.1
1.5 6.6 6 3
2 7.5 6.8 3.4
3 10.6 9.6 4.8
5 16.7 15.2 7.6
7.5 24.2 22 11
10 30.8 28 14
15 46.2 42 21
20 59.4 54 27
25 74.8 68 34
30 88 80 40
40 114 104 52
50 143 130 65
60 169 154 77
75 211 192 96
100 273 248 124
125 343 312 156
150 396 360 180
200 528 480 240
250 604 302
300 722 361
350 828 414
400 954 477
450 1030 515
500 1180 590