China Cheap price Miniature Circuit Breaker FTB1 for Portugal Manufacturer
Exterior and dimensions
We are also focusing on improving the stuff management and QC system so that we could keep great advantage in the fiercely-competitive business for China Cheap price Miniature Circuit Breaker FTB1 for Portugal Manufacturer, We are always looking forward to forming successful business relationships with new clients around the world.
|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|
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.
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.
|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)|
The FTB1 series operates selectively with respect to the combination with MCBs
|MCB(B,C characteristic) FTB1(Characteristic E)|
Note: T represents total selectivity
Exterior and dimensions
Watch this brief video with product manager Marty Trivette as he shows the major system components and user interfaces of the Arc Vault™ Protection System — GE’s latest technology in arc flash mitigation which can be mounted to and protect switchgear, MCCs, switchboards, panel boards, and anything virtually 480 volts with a 3-phase system.
How does this innovative protection system work? It doesn’t exhaust the arc flash; it extinguishes it. Arc Vault™ can stop an arcing fault in less than eight milliseconds — a fraction of the time that traditional systems need to stop a flash. A few features and benefits include:
• The GE Arc Vault™ protection system will contain an arc fault in less than 8ms, resulting in incident energy in accordance with IEEE 1584 at 18″ from the arc event of less than 1.2 cal/cm², with the circuit breaker compartment doors open in a 480V 65kAIC system.
• The system reduces building construction costs, when compared to traditional arc resistant switchgear, because it does not require exhaust chimneys or plenums to direct the arc flash energy outside of the building.
• If an arc flash incident occurs during maintenance, the low voltage switchgear can be operational again within a working day, assuming appropriate replacement parts are available. This improves your overall system uptime when compared to traditional arc resistant switchgear.
Arc flash protection is just another way GE uses technology to add value to your business. To learn more about how this innovation “Makes it Easier,” visit: http://www.geindustrial.com/cwc/Dispatcher?REQUEST=PRODUCTS&pnlid=5&famid=40&catid=82&id=arcvaultPS, and watch the in-depth tour of this system here: http://www.geindustrial.com/cwc/videos-media/?video_uuid=o8bl5eho&v=o8bl5eho&catid=13841.