24 Years Factory Miniature Circuit Breaker FTBD-PV Wholesale to Greek

Overview:



Technical data

Product illustration

Tripping characteristic

Exterior and dimensions

Related video

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Product illustration:

FTBD-PV

Technical Data

Model

FTBD-PV miniature circuit-breaker

Picture

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Number of poles

1P

2P

3P

4P

Rated operating voltage (V)

DC 3. 00

DC 600

DC 900

DC 1200

Rated current (A)

6、10、16、20、25、32、40、50、63
Rated short-circuit breaking capacity(KA)

10

10

7.5

7.5
Rated impulse withstand voltage Uimp(KV)

4

Mechanical and   electrical life:

20000

Protection rating

IP20

Installation

On DIN rail 35mm according to GB/T 19334-2003

Connection capacity:

Cross-section of conductors up to 25mm², Cross-section of busbar from 0.8-2mm²

Ambient temperature (°C)

-25°C ~ +45°C

Altitude (m)

≦2000m

Temperature derating

FTBD-PV Derating of load capability of MCBs
Ambient temperature T (°C)

10°C

20°C

30°C

40°C

50°C

60°C

70°C

In(A)

1.17 In 1.12 In 1.07 In

In

0.93 In 0.86 In 0.81 In

Tripping characteristic

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Connection capacity

121123

Exterior and dimensions

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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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