Q: What is a fusible switch?

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		Bus Plugs: Fusible Switch The fusible switch is a type of bus plug typically found in older homes or apartments. When electricity passes through the system, there is always a danger of overload. With no protection from overloads, your appliances would be destroyed and there is great potential for fires as a result. The fusible switch contains a fuse to protect the home. In the fusible switch bus plug, the fuses are designed with an element which is destroyed in the event of a power overload. When the fuse is intact, the circuit is complete and energy can pass through. When the fuse element is melted, the circuit is broken and electricity does not flow. This keeps the overload from reaching your appliances. Once the element is melted, that fuse must be replaced. This type of bus plug is replaced in newer buildings by the more efficient circuit breaker system, which requires no replacement of burnt-out fuses.

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Circuit Breakers Frequently Asked Questions

What is a fusible switch?

What is a circuit breaker?

What are specialty bus plugs?

How does an electrical surge work?

What is a whole house surge protector?

Can I install a whole house surge protector myself?

What should I do with my old circuit breakers?

Can I padlock my circuit breakers?

What should I know about circuit breaker locking systems?

What is a dual-pole circuit breaker?

Why does a dual pole circuit breaker work?

How many circuit breakers can I add to my breaker box?

What can I do if I am running out of room in my breaker box?

What is an FPE air circuit breaker?

What are "mains"?

Is there still an electrocution hazard with the mains turned off?

Why do my new circuit breakers keep tripping?

What is a low voltage circuit breaker?

How do I reset my GE circuit breakers?

Can I use a different brand for replacement circuit breakers?

Why does my circuit breaker keep tripping?

What information do I need to purchase a replacement motor starter?

Why is my motor starter noisy?

Why does my motor starter click but not turn on?

Why does my motor starter turn over slowly?

How can I tell if my motor starter is bad?

Can I use a manual motor starter as a disconnect switch for maintenance purposes?

What is an AFCI circuit breaker?

Why do I need AFCI Circuit Breakers?

What is a counterfeit Square D circuit breaker?

What is the National Electrical Code?

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Where can I get electrical code training?

What is electrical grounding?

How dangerous is electrical wiring?

My mains are off. Am I safe from electrocution?

What should I know about high voltage electrical safety?

Do I really need an upgraded circuit breaker panel?

Can a damaged appliance cause my Seimens breakers to trip?

Will installing a circuit breaker other than the type specified in the manual void my warranty?

Can I recycle my circuit breakers?

What is an electric switchboard?

What is an electronics fuse?

What is a fuse holder?

What is an LED toggle switch?

What are momentary switches?

What is a semiconductor fuse?

What is a snap switch?

What should I do if I have counterfeit electrical supplies?

Where can I find more information on counterfeit electrical products?

Should I buy re-certified power circuit breakers?

What happens to re-certified or re-conditioned circuit breakers?

What is retrofitting?

What happens to my old gear?

How do I install a transformer?

What is an industrial transformer?

What should I do when taking delivery of a large transformer?

What issues should I be aware of for large transformers?

What is a linear transformer?

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How can I test a wall socket to see if it is causing my circuit breaker to trip?

What are used circuit breakers good for?

Should I buy reconditioned circuit breakers?

Can I use a flashlight to see my circuit breaker panel during installation of new breakers?

What would happen if my circuit breaker did not trip?

What are "replacement only" circuit breakers?

What should I do to protect my electrical system in case of a flood?

What should I do if the area near my breaker panel is flooded?

I smell something burning and see sparks. Is this my electrical system?

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