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The ampere frame rating for a circuit breaker designates how the circuit breaker should be configured. It also states the trip unit of the amp.

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Q: What are the breaker ampere trip ratings?
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Related questions

What is the difference of Ampere Frame and Ampere Trip of Circuit Breaker?

Hi AF Ampere Frame Maximum Long Time current available in the physical package of CB AT - Ampere Tripping long time trip setting of the CB Nishantha DCL


What meaning circuit breaker 400af 300 at?

The "AF" stands for the Frame Ampere rating, so in this case will be 400 Amp Frame. The "AT" stands for Trip Ampere rating, and in this question will be 300 Amp Trip.


What is the ampere frame for 40 ampere trip?

depends on the product, which you are using


For circuit breaker what does it mean by AF AT?

AF refers to the ampere rating of the breaker frame and AT refers to the breaker trip rating in amps. These are not breakers that you would find in your home but industrial molded case breakers. The current trips can be changed out to different values all within the same frame size.


If a shunt trip occurs does breaker go to off or trip position?

the breaker goes to trip position


What is the meaning of 200AT-250AF in circuit breaker?

250AF refers to the ampere rating of the breaker frame and 200AT refers to the breaker trip rating in amps. These are not breakers that you would find in your home but industrial molded case breakers. The current trips can be changed out to different values all within the same frame size.


What is the meaning of 200AT 250AF in circuit breaker?

250AF refers to the ampere rating of the breaker frame and 200AT refers to the breaker trip rating in amps. These are not breakers that you would find in your home but industrial molded case breakers. The current trips can be changed out to different values all within the same frame size.


What is the proper ampere rating of circuit breaker for electric arc welder?

The proper ampere rating of a circuit breaker for an electric arc welder depends on the arc welder. Each is different. Look at the nameplate on the arc welder and choose the circuit breaker and wiring accordingly.


Can a shunt trip breaker be tripped from to different emergency buttons?

Yes a shunt trip breaker can be activated manually.


How do you detect if a shunt trip breaker is malfunctioning?

The way to detect if a shunt trip breaker is malfunctioning is to manually trip the breaker. The shunt is usually wired through a auxiliary relay. Make sure that before you trip the breaker that the load can be shut off without taking a production line etc. off line. Trip the auxiliary relay using a test jumper to activate the relays coil. The breaker's handle will move to mid throw and the load will disconnect from the supply power. If the breaker trips then it is working properly. If the breaker does not trip trouble shoot the circuitry that is used to trip the breaker. Usual problem is an open circuit.


How much does a shunt trip breaker cost?

The cost of a shunt trip breaker depends on the amperage and number of poles the circuit connected to it needs. The cost of the shunt trip over a conventional breaker is substantially more.


Does a hot day trip a circuit breaker?

The ambient temperature does have an effect on the tripping point of a breaker. If a breaker is operating at near capacity the additional ambient temperature will lower the breaker trip set point.