Best Price on Miniature circuit breaker-FTB2LE to Morocco Factory

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

Related video

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Product illustration:

ftb2le

 Technical Data

Model FTB2LE Miniature circuit-breaker
Number of poles IP+N,2P,3P,3P+N,4P
Rated frequency: AC 50/60Hz
Rated voltage (V) AC 230/400
Rated current (A) C

D

6, 10, 16, 20, 25, 32, 40, 50, 63

6,10,16,20,25,32,40

Rated residual operating current(mA) AC A 30

30,50,100

Rated residual non-operating current(mA) AC

A

15

15,25,50

Residual current breaking time 30mA≦0.1s  250mA≦0.04s
Max. breaking time(s) 0.1
Rated short-circuit breaking capacity(KA) 6.5
Rated residual current breaking capacity(KA) 4.5
Mechanical & electrical life: 20,000 operations
Protection rating IP20
Installation  
Installation On DIN rail 35mm according to JB6525
Connection capacity: Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm²,reversibility of connections
Tightening torque 2 Nm
Ambient temperature (°C) - 5°C ~ +40°C
Altitude (m) ≤2000m
Relative air humidity no more than 95%
Pollution degree
Installation condition Used in place without obvious shock and vibration
Weight (g) 340 420 530 630 710

 

Exterior and dimensions

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Number of poles Width(mm) Modules
1 / 2 54 3
2 / 2 72 4
3 / 3 100 5.5
3 / 4 112.5 6.25
4 / 4 130.5 7.25

 

 

 





  • This device is called an isolator. It’s a mechanical disconnect that opens and closes a 500,000 volt electrical transmission line at the El Dorado electrical substation near Boulder City, Nevada. Another device called a switcher is supposed to open the circuit first, then the isolator opens to physically disconnect the circuit. The switcher has had a history of one of the three phases failing to open. When this happens, the isolator opens with one phase still energized. Since the isolator isn’t designed to open hot, there’s no arc suppression, and the result is quite spectacular. Because of the history of periodic failures when the switcher has been opened, a video camera had been set up to try and record the event should it happen again. They were in luck and caught it. The arc ends when an upstream circuit breaker is opened. Full credit goes to Neil Brady who captured this amazing sight. The “wow” at the end of the video says it all.

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