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CB MCB
(i) Mechanism of CB is tripping relay. (i) Mechanism of MCB is tripping release
(ii) It is used in HV system. (ii) It is used in LV system.
(iii) Rupturing capacity is high . (iii) Rupturing capacity is low.
Wiki User
∙ 10y ago
Wiki User
∙ 8y agoMCBs are miniature circuit breakers with optimum protection facilities of overcurrent only.These are manufactured for fault level of up to 10KA only with operating current range of 0.5 to 63 Amps (the ranges are fixed), single,double and three pole verson.These are used for smaller loads -electronic circuits,house wiring etc.
MCCBs are Moulded case Circuit breakers,with protection facilities of overcurrent, earth fault.it has a variable range of 50% to 100% operating current.They can be wired for remote as well as local operation both.They are manufactured for fault levels of 16KA to 50KA and operating current range of 25A to 630Amps.They are used for aplication related with larger power flow requirement.
Wiki User
∙ 8y ago*MPCB (Motor Protection Circuit Breaker) is a combination protection unit comprising the functions of a switch, a short circuit protective device and an over load relay. They are designed for various current rating to suit different capacity motors. Their quality is defined as per IS 13947 / IEC 947
MCB is only a simple circuit breaker which has only limited capability of overcurrent and short circuit current protection.
*Miniature circuit breakers (MCBs) are fitted as protection units in place of fuses. They have the advantage that they can be manually reset without having to replace wire as in the case of the traditional fuse. The MCBs have either a button or lever that can be flicked to reset it. The MCB tripping is an indication either that the circuit has been overloaded or that a short circuit has occurred somewhere in the system. Depending on their type they can rated for different applications-
B type - General Domestic Consumer Unit use
C type - Motor Rated
And others - Inductive, Capacitance, Reactive loads, etc.
The Motor Protection Circuit Breakers (MPCBs) provide short circuit protection, overload protection, and motor disconnect functions.
The MPCBs may be combined with a magnetic contactor to provide 2 component combination starters and with the addition of an overload relay. They generally provide contacts to indicate position (Trip, Not Tripped) and also axillaries contacts normally open closed - Operational range usually from 0.11 A to 100 A and this is usually adjustable from the front of the unit as opposed to MCB which are generally set. They are also more expensive.
Wiki User
∙ 9y agoA circuit breaker is designed to protect circuits, while a contactor is designed to close or open circuit.
Wiki User
∙ 15y agompcb has an inbuilt contactor and relay.so need for external contaectors and relays. mccb ther is no contactor and relays, we have to provide.
Wiki User
∙ 6y agoVCB (Vacuum circuit breaker) is generally used for higher voltage and higher current systems. MCCB is used for lower and lower current ranges.
Wiki User
∙ 12y agofuse & mcb
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What is difference between spn and tpn mcb db?
TPN MCB means Triple pole Neutral Miniature Circuit Breaker where as SPN MCB means single phase Neutral MCB.
What is the c curve and d curve in MCB?
c curve & d curve mcb difference
What is the difference in icu mcb and ics mcb?
pl all my friend explain icu and ics of mccb as there is so many confussion
What is the full form of MCB?
The definition of MCB is a miniature circuit breaker, it trips if there is a line to natural fault. Ill add some extra information about the different types. RCD - residual current device = This is what you could separate you're circuits up with by inserting 1 of these in you're consumer unit (if you have lets say 10 circuits it goes like this... rcd-mcb-mcb-mcb-mcb-mcb-rcd-mcb-mcb-mcb-mcb-mcb-main switch. you see the rcd's control 5 circuits each, if 1 of these circuits had an earth fault on it, the rcd will trip and 5 of them circuits will go off, which means you have to keep tripping in you're rcd with an mcb 1 at a time to see which circuit the fault is on. RCBO - residual current breaker with overload protection- These can be installed in place of mcb's and rcd's, the rcbo is an mcb and rcd in 1 breaker. For example, i have installed a consumer unit full of these, in this case if a circuit forms a fault then its only that circuit that goes off. I hope this extra piece of information helps you along and best of luck. <<>> In electrical terminology MCB stands for Miniature Circuit Breaker.
Technical specifications for selection and calculation of ratings of mccb acb vcb mcb fuse?
thokka thotakoora
What is the difference between fuse and MCB?
what is the difference between miniature circuit breaker and fuse
What is diff between fuse and mcb?
both are same dont wrry. be happy.
What is difference between spn and tpn mcb db?
TPN MCB means Triple pole Neutral Miniature Circuit Breaker where as SPN MCB means single phase Neutral MCB.
What are the difference MCB and CB?
The main difference between MCB, RCCB, and Isolators Isolators are generally used in power system while on the other hand, MCB is the circuit breaker. Isolators are manually-operated device, and on the contrary, the circuit breaker is the automatically-operated device.
What is the difference between ELR and ELCB?
elcb is the daughter of ELR ,mcb is their one onlyn son
What is the c curve and d curve in MCB?
c curve & d curve mcb difference
What are the differences between a MCB and a CB.?
mcb but cb has 2 and the other one has 3
What is the difference in icu mcb and ics mcb?
pl all my friend explain icu and ics of mccb as there is so many confussion
What device is often used to protect a business machine from excessive current?
Fuse or MCB
What are the advantages of MCBs over traditional fuse carriers?
If an MCB trips you can simply close it and be done. If a fuse blows you need to replace the fuse /fuse wire, not so convenient.
What is difference between the mcb and rcb?
MCB stands for miniature circuit breaker , which provides protection against over current. the setting is not adjustable. RCB stands for residual circuit breaker which provides protection against earth fault as well as over current. It monitors the current difference between phase and neutral and if the difference is more than rated value say 200 milli amps it will trip.
What is the full form of MCB?
The definition of MCB is a miniature circuit breaker, it trips if there is a line to natural fault. Ill add some extra information about the different types. RCD - residual current device = This is what you could separate you're circuits up with by inserting 1 of these in you're consumer unit (if you have lets say 10 circuits it goes like this... rcd-mcb-mcb-mcb-mcb-mcb-rcd-mcb-mcb-mcb-mcb-mcb-main switch. you see the rcd's control 5 circuits each, if 1 of these circuits had an earth fault on it, the rcd will trip and 5 of them circuits will go off, which means you have to keep tripping in you're rcd with an mcb 1 at a time to see which circuit the fault is on. RCBO - residual current breaker with overload protection- These can be installed in place of mcb's and rcd's, the rcbo is an mcb and rcd in 1 breaker. For example, i have installed a consumer unit full of these, in this case if a circuit forms a fault then its only that circuit that goes off. I hope this extra piece of information helps you along and best of luck. <<>> In electrical terminology MCB stands for Miniature Circuit Breaker.
