Functions of Basic Electrical Control Components

Which device only provides isolation, without control or protection?

• Fuse
• Switch
• Isolator
• Contactor

Which component is used for control but not for protection or isolation?

• ELCB
• Contactor
• Breaker
• Switch

Which component provides protection?

• Fuse
• Contactor
• Isolator
• Switch

Which of the following components cannot provide control?

• Switch
• Breaker
• ELCB
• Contactor

Which of the following provides isolation and protection but not control?

• Isolator
• Fuse
• Contactor
• Switch

Which component provides all three functions: control, isolation, and protection?

• Breaker
• Fuse
• Contactor
• ELCB

Which component cannot isolate the circuit?

• Isolator
• Fuse
• Contactor
• Breaker

Which of the following components can provide both control and isolation but not protection?

• Contactor

• Breaker

• ELCB

• Switch

Which component is specifically designed for protection against overloads and short circuits?

• Fuse

• Contactor

• Isolator

• Switch

Which device symbol is shown?

• Switch

• Fuse

• Isolator

• ELCB