Difference Between B Curve & C Curve in MCB.
Answers were Sorted based on User's Feedback
Answer / raghavendran
MCB's have tripping curves like B,Cand D.
Curve B type of MCB's are used where maximum sensitivity is
needed and the initial starting current is 3 to 5 times the
rated current.
curve c MCB's are used where close protection is not
required and the starting current is 5 to 10 times the rated
current.these may be used while tripping the circuit due to
high starting inrush current.
curve D MCB's are used where the starting current is very
high 10 to 20 times the rated current, like high capacity
motor installation where initial starting voltage dip may be
very high.
Is This Answer Correct ? | 98 Yes | 4 No |
Answer / anil tandon
The MCBs are classified as per the Holding Currents and thus their usage are define accordingly,
B-Curve MCB:- They have a Holding current of 2 times of rated current and are used for Lighting Loads
C-Curve MCB:- They have a Holding current of 5 times of rated current and are used for motoring Loads.
The MCBs are classified as per the Holding Currents and thus their usage are define accordingly,
B-Curve MCB:- They have a Holding current of 2 times of rated current and are used for Lighting Loads
D-Curve MCB:- They have a Holding current of 10 times of rated current and are used for High Inrush currents E.g -Control Transformer etc
Is This Answer Correct ? | 47 Yes | 6 No |
Answer / arshath
B curve using for domestic
C curve using for industrial
Is This Answer Correct ? | 23 Yes | 5 No |
what will happen if we use earthing inplace of neutral for domestic energy meter
5 Answers Polyplex Corporation Limited,
why the iron chains were hanged at the back or front of the trucks earlier which were touching the earth?
Can I parallel 1 MVA generator with 1kVA Generator? if V, F, Ph Seq and Ph angles are same
please describe the Transformer setting, Motor setting, I/C setting, Tie setting
what is the effect of power factor in electrical circuit ? if we mainten power factor near about unity (0.999) our energy consumption Units increase or decrease?
11 Answers Piramal Healthcare,
ct connection of energy meter
in three phase with neutral connection, what will happen,if the neutral is in open condition with single phase distribution panel
Current chopping mainly occurs in air blast circuit breaker.why?
What are the common sources of energy?
about transformer oil material & Test name for the measurement of its dielectric strength & wht will u do if its dielectric strength goes low ?
What is the Surge suppresor? Why using in a UDB's and How it works?
Why we use a H.T. Fuse from a thick wire, on other side we use high rating of cables? & Why we use less Sq. mm Cable on H.T. side , on other side we use Large Sq. mm cable?