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What is difference between vacuum circuit breaker and vacuum contactor?
Wiki User
∙ 12y ago
First thing, there is nothing like vacuum circuit contactor. It is a vacuum contactor. It has hrc fuse for protection against short circuit and have vacuum bottles in which contacts move to get close and open. It will never trip bcas it does not have tripping mechanism, it does not have operating mechanism. It's contacts are made only to make and break normal current. It is used to start and stop a motor only. It does not have ka rating for fault current.
Vacuum circuit breaker is a real fault current breaker which trips during a fault like short circuit, earth fault, under or over voltage or any one. It encompasses the operating mechanism to break the contacts at a very high speed and also need a spring charging mechanism to turn the breaker on. It has very highly rated contacts inside a heavy capacity vacuum bottles. It has realese ( something like solenoid ) which pulls the plunger after it get signals from various protection relays in case of fault. It is not meant to operate for day to day start and stop operation of motor. It has ka rating for fault current.
Analogus to ordinary home circuit, vcb is like a circuit breaker at home inside a panel and vc is a relay in our any of instruments at home.
Analogus to low voltage situation, vcb is like a fault current ( air, or bulk oil or minimum oil ) circut breaker and vc is like an ordinary contactor
Wiki User
∙ 11y ago
Wiki User
∙ 12y agoA contactor is typically smaller, cheaper, and made to close more often. Breakers are made to interrupt faults, so they are heavier duty, but may wear faster when many operations are needed (starting and stopping of a motor, for instance).
Wiki User
∙ 14y agoa circuit breaker is an "On Load" device while a contactor is an "Off Load" device.
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What is the difference between rated short circuit duration 3 seconds and 1 second circuit breaker?
The energy dissipated.
What is the difference between ITE and FPE circuit breaker?
The connection blades and how they connect into the distribution panel's bus.
What is the difference between 16A TP and 16A TPN isolator?
The difference between 16A TP and 16A TPN isolator is the type of the circuit breaker that is used. The terminal design is the other difference.
How is a Blowout coil connected?
A blowout coil connected in series with contactor's auxiliary contacts that shunt around the main contactor contacts. The coil is out of the circuit when the main contactor contacts are closed and in the circuit when the main contactor contacts are open.
What is a difference between 10KA and 22KA circuit breakers?
The previous answer is incorrect, and I would advise that user to not give out information if they are going to give completely misguided information. The interrupting rating of a breaker is the maximum current that the breaker is designed to handle, at the breaker's rated voltage, before damage will occur to the breaker. A breaker will trip at FAR LESS than the interrupting rating, but it is extremely dangerous to expose the breaker to any situation where it will have more than the rated interruption current. the breaker is designed for. The reason some breakers are rated at 22kA instead of 10kA is because they typically have far larger conductors hooked up to them, so with the lowered impedance on the circuit there is more of a chance for the breaker to experience a higher fault current at the breaker. So electricians install 22kA breakers to handle the higher "available fault current."
What is the difference between fuse and MCB?
what is the difference between miniature circuit breaker and fuse
What is the Difference between circuit breaker and a relay?
A circuit breaker is designed to break a circuit which is carrying current at the time. Where large currents and/or voltages are present, the opening of the circuit may induce dangerous arcing, so means such as air blast must be used to "blow out" the arc. Air breakers are being phased out and replaced with vacuum or SF6 breakers. An isolator is only designed to isolate a circuit or other component after the current has already ceased, so it doesn't need to have any means to stop the arc. Thus in high voltage/high current installations such as in power stations or grid switching stations, the initial operation to isolate the circuit, whether planned or as a result of a fault, is by the circuit breaker, the isolator is then used to isolate the circuit breaker for maintenance or repair. The difference between a circuit breaker and a contactor is that a circuit breaker can break fault current while a contactor cannot. A contactor is typically implemented in series with a fuse which serves to interrupt fault current. An isolator and a contactor are not synonymous.
What is the difference between rated short circuit duration 3 seconds and 1 second circuit breaker?
The energy dissipated.
What is difference between VCB and ACB?
VCB (vacuum circuit breaker) is used in HV (high voltage) applications. ACB (air circuit breaker) is used in LV (low votage) applications.
What is the difference between ITE and FPE circuit breaker?
The connection blades and how they connect into the distribution panel's bus.
What is the difference between a run and a circuit?
run in a electrical system means a wiring & conduit runs coming from Panel Board Circuit Breaker to its branch circuit loads in a circuit. while circuit is a designated number of branch breaker in a panel board where power load was individual connected.
What is the difference between 16A TP and 16A TPN isolator?
The difference between 16A TP and 16A TPN isolator is the type of the circuit breaker that is used. The terminal design is the other difference.
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 thermal magnetic release circuit breaker microprocessor based release circuit beraker?
As far my knowledge goes the only difference i found in a thermal magnetic relase & microprocessor based was in a microprocessor based Circuit breaker we have a additional protection i.e. for Earth fault. Aparts that the range of fault setting in a microprocessor based circuit breaker is more than in a thermal magnetic trip unit.
How is a Blowout coil connected?
A blowout coil connected in series with contactor's auxiliary contacts that shunt around the main contactor contacts. The coil is out of the circuit when the main contactor contacts are closed and in the circuit when the main contactor contacts are open.
What is the difference between Draw-out and Fixed-air circuit breaker?
A drawout breaker has two parts (base and breaker). The base is wired to the load frame and bolted in. The breaker slides in and out of the base, and connects physically and electrically to the base (so it's easy to rack out for maintenance). A fixed mounted circuit breaker is bolted directly to the enclosure and wired to the load frame.
How does magnetic contactor operate?
explain me about the contactor works with examples. if i want to control a motor with contactor. and how i can use contactor in loops with over load and circuit breakers.
