Which is not considered as a type of overload relay?

The correct answer is option 1
Directional relays are not overload relays.
Concept:

• Thermal Relay: thermal overload relay is a protective device and is mainly designed to cut the power whenever the motor uses too much current for an extended time period.
• Magnetic Relay: magnetic overload can be operated by detecting the magnetic field strength which is generated by the flow of current towards motors. This relay can be built with a variable magnetic field within a coil that holds the motor current.
• Solid state overload Relay: solid state relays are the semiconductor equivalent of electromechanical relays and can be used to control the electrical load without using moving parts.