19 Years manufacturer Miniature Circuit Breaker FTB1 to Hungary Manufacturer

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

Related video

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Product illustration:

20170427170914

 

Accessories
 Auxiliary contact Auxiliary contact and alarm contact  Shunt release Shunt release and auxiliary contact  Under voltage release  Over voltage release  Busbar mounting base  Motor-driven operation
OF OF+SD MX MX+OF MQ MG MP CD

 

Product Features

Under normal condition, the working principle of main thermostic bimetal in FTB1 SMCB is the same to the usual circuit breakers, it is used for overload tripping. when there is a short-circuit on a branch circuit breaker, the magnet core in the main current path would tilt the moving contact away from the fixed contact to break the circuit,thus producing the electric arc, and limiting the short-circuit current effectively.

In the maintime,the short-circuit current flow to the supplementary current path, a selective resistor and a selective bimetal are connected in series of the supplementary curret path, limiting the short-circuit current to a few hundred amps.

When the downstream circuit-breaker has tripped because of a short-circuit, the contact tips reclose automatically through a simple spring-type system,ensuring other unaffected branch circuits continue in operation.If a short-circuit occur between the FTB1 and the downstream circuit-breaker, another bimetal release enables short-time delayed tripping,ensuring the contact tips remain in the open position enabling isolating.

a0170427173357

Scope of use

It is primarily used in critical installations,for instance, office buiding, laboratory, theatre, museum, hotel, shopping mall, telecommunication, coal mine and shipping, chemical industry and metallurgy, industrial plants,medical and health care, bank and securities exchange,airport, underground express way, military establishment and similar loads that requires non-interrupted and reliable power supply.

Technical Data

Model FTB1-100
Number of poles  ada
Rated frequency: AC 50(60)Hz
Rated voltage (V) AC 230/400
Rated current (A) 20, 25, 32, 40, 50, 63,80,100
Breaking capacity  Icn/Ics(KA) LH 15/7.525/12.5
Rated impulse withstand voltage (kV) 6
Tripping characteristic E
Electric arc distance(mm) ≤35
Mechanical life 10,000
Insulation function yes
Installation  
Pollution degree
Ambient temperature (°C) -5°C ~ +40°C
Altitude (m) Not higher than 2000m
Installation Mounted on DIN rail, busbar adaptor or by screw terminal
Connection capacity: Connection to cables,busbars or terminals
Weight (g) 313      617       932       1241

 

 Trippping behavior

 

Test Tripping characteristic Conventional non-tripping current Conventional tripping current Initial status Tripping time
a b E E 1.05In 1.2In Cold statusRight after test 1 ≧2h﹤2h
Test Tripping characteristic Delayed tripping current short-time delayed tripping current Initial status Tripping time
c E 5In   Cold status 0.05s<t<5s(In≦32A)   0.05s<t<10s(In>32A)
d E   6.25In Cold status 0.01s﹤t﹤0.3s

Coordination table

The FTB1 series operates selectively with respect to the combination with MCBs

MCB(B,C characteristic) FTB1(Characteristic E)
In A 20 25 32 40 50 63 80 100
10 T T T T T T T T
16 T T T T T T T
20 T T T T T T
25 T T T T T
32 T T T T
40 T T T
50 T T
63 T

Note: T represents total selectivity

Applications

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Tripping characteristic

adfa (3)

Exterior and dimensions

adfa (4)





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    Today I want to discuss with you the big controversy that’s going with dryers. This is a 120 volt dryer or 110 volt. Plugs into a regular one ten outlet. There is dryers that are made with a 220 volt outlet.

    So what’s the difference?

    Well what it is is manufacturers are able to reduce costs on the dryer by putting in a 220 volt dryer. The reason. The amount of copper that is in the winding of the copper motors. It takes a lot more copper to wrap the windings of a 110 motor. So for a 220 motor you have a lot less copper wrapped in the windings. Because you can get the drive power out of the 220 voltage. So a little bit different.

    220 is not necessarily better or faster drying. You still have your regular coils on the back here. It’s only how the dryer motor is able to spin. It still spins the same way. Heat is still exactly the same. All it is is the spinning of the motor. So once again the difference. The 110 voltage. The dryer motor the coils around the motor will be more windings more copper windings. So the copper adding the cost to the dryer itself. So a 220 volt dryer is cheaper. That’s the story on 220 vs 110 dryers.

    Of course 220 dryers will be wired different and you need a different plug. Larger plug outlet for the 220 end. Not every situation is run for that. Mine is not all though I do have empty slots in my breaker panel that I can take out here to add you know the larger 220 breaker for a dryer. As you can see mine is 110 right now. Not in any hurry to change that really because again it just reduces the cost of the machine itself but doesn’t really improve in efficiency or anything. Still got the same heater coil. Same amount of heat output. Just different in the way that it rotates.



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