kA rating of an MCB or an MCCB is the maximum current it can safely interrupt in case of a short circuit. If the current goes beyond this value, the circuit breaker could be damaged. kA rating is known as the short circuit withstand capacity or ultimate breaking capacity of a circuit breaker.
What is meaning of kA in electrical?
A kiloampere (kA), is a decimal multiple of the ampere, the SI unit of electric current. An ampere (A), is the SI unit of electric current and is one of the seven SI base units. The ampere is often shortened to amp (plural amps).
What does kA mean on a circuit breaker?
kA rating of an MCB or an MCCB is the maximum current it can safely interrupt in case of a short circuit. If the current goes beyond this value, the circuit breaker could be damaged. kA rating is known as the short circuit withstand capacity or ultimate breaking capacity of a circuit breaker.
What does 20KA mean?
20KA is the amount of short circuit current that the breaker can withstand for 3 seconds without any damage . 12.5KA is the amount of short circuit current that the breaker can withstand for 1 sec without any damage.
What is 10k MCB?
MCB Breaking Capacity: Breaking capacity can be defined as the maximum level of fault current which can be safely cleared. It is written as in numerals like in in example it is 10000. It means it 10000A = 10kA . ... It means that it does not allow fault to get it’s peak and trip before that.
What is the difference between 6kA and 10ka MCB?
The main difference between the two is their capacity, with the MCB rated under 100 amps with an interrupting rating of under 18,000 amps .
What is the breaking capacity of circuit breaker?
Breaking capacity or interrupting rating is the current that a fuse, circuit breaker, or other electrical apparatus is able to interrupt without being destroyed or causing an electric arc with unacceptable duration.
What is kA for time?
Kiloannus , abbreviated ka, a period of 1000 Julian years, equal to 365,250 days.
How is MCCB calculated?
Convert KW to HP (KW/0.75), multiply it by 1.5 gives you the rated current . Multiply it by 1.5 for breaker value. Here we provide coordination chart link for required rating and model of MCCB.
How many amps are in a kA?
| Kiloampere [kA] Ampere [A] | 1 kA 1000 A | 2 kA 2000 A | 3 kA 3000 A | 5 kA 5000 A |
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What does kA mean on fuses?
The kA ( kilo amps ) rating of any circuit breaker is the absolute maximum amount of current it can safely interrupt at its rated voltage. This is also known as AIC (Amps Interrupting Current).
What does 3ka mean?
Miniature Circuit Breaker is a product protecting the relevant electrical installation against short circuits and over current besides controlling the system.
Is there a 10 amp circuit breaker?
10 Amp Single-Pole Type QP Circuit Breaker.
What is MCB full form?
MCB stands for Miniature Circuit Breaker . It automatically switches OFF electrical circuit during any abnormal condition in the electrical network such as overload & short circuitconditions. ... When it comes to house applications, MCB is the most preferred choice for overload and short circuit protection.
What is C63 in MCB?
Catalog Description: S804B-C63 High Performance MCB. Long Description: The S804B-C63 is a 4-pole High Performance Circuit breaker with C-characteristic , with cage terminal and a rated current of 63 A. It is a current limiting device with a maximum breaking capacity of 16kA at 230/400V.
What is B16 in MCB?
The S802N-B16 is a 2-pole High Performance Circuit breaker with B-characteristic , with cage terminal and a rated current of 16 A. ... It has two different tripping mechanisms, the thermal tripping mechanism for overload protection and the electromechanic tripping mechanism for short circuit protection.
