Resistor Symbol on SEL Relay Output Contacts
Resistor Symbol on SEL Relay Output Contacts
(OP)
I'm looking at the rear connection diagram for a SEL-451 relay. Some of the output contacts have a form A along with a resistor symbol. What does this symbol represent? What are these commonly used for in a relay?
http://i.imgur.com/GqGC2.jpg
http://i.imgur.com/GqGC2.jpg






RE: Resistor Symbol on SEL Relay Output Contacts