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# What is a switch that automatically opens if the current is to high?

Updated: 9/15/2023

Wiki User

14y ago

That would be a circuit breaker.

Wiki User

14y ago

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Q: What is a switch that automatically opens if the current is to high?
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Circuit Breaker.

### What is a switch that automatically opens if a current is too high?

Where I'm from, it's called a "circuit breaker".A circuit breaker.

### What is switch that automatically opens if the current is too high?

Where I'm from, it's called a "circuit breaker".A circuit breaker.

### What happens when a switch in a current is opened?

current through the switch become 0.and switch become a high value resistor.

### What happens when a switch a current is opened?

current through the switch become 0.and switch become a high value resistor.

### How do you high 5 scientists in jet pack joyride?

Just run into them. They automatically high five you if that is a current challenge

### What can a relay be used?

A relay is an electrical switch. It allows a low current &quot;switch&quot; circuit to control the electricity flow of a high-current circuit load

### Can Crystal Diode acts as a Automatic Switch?

A diode typically has low resistance for current in one direction, and high resistance for current in the other direction. This is not really the description of anything that could be called a 'switch'.

### Is a resistor and a relay the same thing?

No, they are not the same. A resistor is a current reducer and a relay is essentially a switch (using low voltage to switch high voltage on/off)

### How a 12v relay works?

A DC relay is a relatively simple device that uses a single coil, normally wound round an iron core. When a voltage is applied, current flows through the coil and generates a magnetic field. As the magnetic field increases, a spring loaded lever is attracted to the core and moves the switch contacts from an "off" state to an "on" state. The lever will be held in place as long as the current flows in the coil. When the coil current drops to zero, the magnetic field decays and the lever is released, the spring then pulls it back to it's off position.

### Why don't brights work on 2002 grand am?

Check to see if the foglight switch is on. Brights (high-beams) are automatically disengaged when fog lights are being used.

### Does a 20 amp breaker deliver 20 amps on the wire?

The breaker's function is to protect the circuit so that no more than 20 amps flow. The ability to create the 20 amp flow comes from the voltage supplied by the power company and the load you connect to the supply through the breaker. The breaker is just a switch that "opens" if the current flowing through it is to high. It has no role in generating the current.