numbering convension for Motor starter controls and contacts
numbering convension for Motor starter controls and contacts
(OP)
is there a standard for the numbering convention for motor starters? like NO/NC contacts, 11-14,12-13, or coil ,A1-A2?
thanks in advance
thanks in advance





RE: numbering convension for Motor starter controls and contacts
David Castor
www.cvoes.com
RE: numbering convension for Motor starter controls and contacts
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If we learn from our mistakes I'm getting a great education!
RE: numbering convension for Motor starter controls and contacts
NEMA has no numbering convension for control terminals
IEC
NC Contact
11
12
first digit designate sequence of control terminal second designals NC contact
23
24
first digit disignates sequence of control terminal second designates NC contact
A1
A2
coil terminal markings
Anybody know the exact standard for IEC that specifies this?