Selection guide for 3-stage helical gearboxes:
With 2-pole, 3-phase motor
| 3-stage gearbox type 3G90/71 to 3G180/100 |
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| 3-stage gearbox type 3G200/132 to 3G250/160 |
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| With 4-pole, 3-phase motor 3-stage gearbox type 3G90/71 to 3G180/100 |
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| 3-stage gearbox type 3G200/132 to 3G250/160 |
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