Form A, Form C contacts
Form A, Form C contacts
(OP)
Dear ANSI EE.
Could you please give short explanation, what is a different between Form A and Form C contact.
What need use for the trip and close commands,
Additional, what is a From A with current control contact.
Sorry for Q, Im never work with ANSI relay.
Thanks in advance.
Best Regards.
Slava
Could you please give short explanation, what is a different between Form A and Form C contact.
What need use for the trip and close commands,
Additional, what is a From A with current control contact.
Sorry for Q, Im never work with ANSI relay.
Thanks in advance.
Best Regards.
Slava






RE: Form A, Form C contacts
Form C is one normally open contact and one normally closed contact with a "common" terminal between them. Form C contact assembly has three terminals. NO-Comm-NC.
They can be part of any type of a relay or auxiliary switch.
Normally open contacts are commonly used to trip and closing commands,but really it depends on the control circuit.
Rafiq Bulsara
http://www.srengineersct.com
RE: Form A, Form C contacts
Form B - Contact closed in the rest/deenergized/shelf state of the device.
Form C - Two contacts, one A and one B, with a single common.
CODE
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A B C
RE: Form A, Form C contacts
RE: Form A, Form C contacts
It's more simple, that I think
NO, NC, CO in the IEC world.
Best Regards.
Slava