What is the short-circuit isolator in the fire protection diagram? What role does it play? There may be many electrical personnel who are half-knowing. In fact, the commonly explained short-circuit isolator is a resettable fuse. Once a short circuit occurs, the fuse will automati

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2025-05-11

What is the short-circuit isolator in the fire protection diagram? What role does it play? There may be many electrical personnel who are half-knowing. In fact, the commonly explained short-circuit isolator is a resettable fuse. Once a short circuit occurs, the fuse will automatically jump away from the output voltage to protect the board of the host from burning due to excessive output current. Electrical design online teaching Teacher Di, adding an isolator to the circuit branch once the branch is short-circuited, only the problematic branches will not affect other branch equipment. So what are the specific principles, functions and settings requirements of short-circuit isolators in fire alarm systems? Let the editor take you to learn more about it!

(1) What is the principle of a short circuit isolator?

(2) What is the function of a short circuit isolator?

(3) What are the settings requirements for the bus short-circuit isolator of the fire automatic alarm system?