IEC - NEMA Electric Motors Standard Torques

NEMA (National Electrical Manufacturers Association) has classified electrical motors in four different NEMA designs where torque and starting-load inertia are important criteria.

Torques of the IEC Design N motors are in general close to NEMA Design B motors. IEC Design N and NEMA Design B are the most commonly used industrial types.

Torques of the IEC Design H are nearly identical to NEMA Design C.

• 1 lb ft = 1.356 Nm

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