Wholesale Price Miniature circuit breaker-FTB2LE to Qatar Importers

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

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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

 

 

 





Why ELCB can’t work if N input of ELCB do not connect to ground? – Earth-leakage circuit breaker-https://www.electrical4u.com/working-principle-of-earth-leakage-circuit-breaker-elcb-voltage-current-elcb-rccb/
ELCB is used to detect earth leakage fault. Once the phase and neutral are connected in an ELCB, the current will flow through phase and that much current will have to return neutral so resultant current is zero. Once there is aground fault in the load side, current from phase will directly pass through earth and it will not return through neutral through ELCB. That means once side current is going and not returning and hence because of this difference in current ELCB will trip and it will safe guard the other circuits from faulty loads. If the neutral is not grounded, fault current will definitely high and that full fault current will come back through ELCB, and there will be no difference in current

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Please watch: “What is “pu” in electrical engineering?”

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