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central mich | We are a pretty large switchgear and motor dealer. The $70 starter is an IEC starter while the $1000 Sq D is a NEMA labeled starter. In short IEC=European , NEMA= US.
NEMA rated are much more robust since each size is rated for several motors with different HP sizes. IEC basicly has a size for each motor HP.
IEC has won the popularity contest in the last decade. We have a large supply of used and new NEMA product but when we build large distribution systems we use IEC because of the cost and engineering advantages are huge. While IEC are not as heavy duty as NEMA , it does depend on the end user. On some oil rigs IEC perform as well as NEMA , it depends on the rig crew. While most large motors are soft started we have several 250 and 300HP motors across the line with IEC starters and they do fine.
Edited by jimgen 1/17/2017 19:20
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educate me on mag motor starters
