What is the maximum size of a three-phase, 240-volt motor that can be controlled using a size 2 nema contactor?

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28-07-2022
Physics

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What is the maximum size of a three-phase, 240-volt motor that can be controlled using a size 2 nema contactor?

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okpalawalter8 okpalawalter8 · Answer 1 · 2022-08-03T19:17:34+02:00

15 HP at 240 V is the maximum size of a three-phase, 240-volt motor that can be controlled using a size 2 NEMA contactor

This is further explained below.

What is a NEMA contactor?

Generally, Size 2 NEMA contactors can only handle three-phase, 240-volt motors up to 15 horsepower at 240 volts.

In conclusion, Contactors and motor starters produced by NEMA (National Electrical Manufacturers Association) are graded according to their sizes. These sizes are categorized according to the current and power ratings that they carry.