The picture below is a power circuit for a direct-on-line starter, given in any ABB catalog for contactor. Q1 is a manual motor started with overcurrent protection. My question is
- What is the meaning of the "_F"-like symbol. Does it represent an edge trigger?
- What is the square after the "_F"-like symbol. Does it represent the coil of the contactor?
- What is the "/>" symbol? Does it represent overcurrent protection?
I presume that the pulse-like symbols are for thermal overload.