Table of Contents
What does kAIC mean on Breakers?
Also known as KAIC (Kilo Ampere Interrupting Capacity), this is the maximum the breaker is rated to which means it’s important to ensure that your maximum available fault current is less than this rating of the equipment at the point of installation.
How are kAIC ratings calculated?
kAIC Rating of Circuit Breakers: Fused Circuit Breakers 13, the basis of the rated short-circuit current of a fused circuit breakers is the rms symmetrical current value at a power factor of 20\% lagging (X/Rtest ratio of 4.9). The kAIC rating for circuit breakers depends on the manufacturer test power factor.
What is the AIC rating of a panel?
AIC: Ampere Interrupting Capacity The AIC rating indicates the maximum available fault current (in amps) that an overcurrent protection device (circuit breaker, fuse, etc.) will safely clear when a fault is applied at the load side of the overcurrent protection device.
What does 10kA mean on a circuit breaker?
The 10 kA you see on a circuit breaker is the interrupting rating of the circuit breaker, that is, the largest current that it can safely open. It is usually written as 10 kA rms symmetrical. The rms indicates that it is rated to interrupt 10 kA root mean square current.
What is the use of Kaic?
It stands for Kilo Ampere Interrupting Capacity and is sometimes referred to as Thousand Ampere Interrupting Capacity. KAIC in electricity refers to refers to measurements of the ability of a circuit breaker to withstand a short circuit or overload. Amperes is the unit used to measure electric current.
What does 22k AIC mean?
A breaker marked 22k AIC will protect anything it supplies so that the equipment never sees more than 22,000 amps of fault current.
How many amp is 10kA?
“10KA” means 10,000 amps.
What is the interrupting capacity of a breaker?
The interrupting capacity of a circuit breaker is the maximum current a circuit breaker is rated to safely interrupt at a specific voltage. This short-circuit current rating is normally expressed in rms symmetrical amperes and is specified by current magnitude only.
Will a breaker trip at 80\%?
Circuit breakers (CBs) are designed to carry 100\% of their rated current, yet the National Electric Code (NEC) dictates an 80\% application.