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Help CenterDirect-current Moulded-case Circuit Breaker-FTM2DC
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It can be used in distribution network for AC 50Hz, rated working voltage not more than AC1000V, rated current to 630A or less.
All series circuit breakers can also be used as motor protector. The rated insulation voltage of the circuit breaker is 1000V, which is used for distributing electric energy and protecting undervoltage and short circuit of power line and power supply equipment.
Model & Spec |
FTM2DC |
||||||||
Frame size current (A) |
160 |
250 |
400 |
630 |
|||||
Rated current ln(A) |
20, 25, 32, 40, 50, 63, 80, 100, 125, 160 |
160, 180, 200, 225, 250 |
250, 315, 350, 400 |
400, 500, 630 |
|||||
Electrical property |
|||||||||
Rated operating voltage Ue(V) |
DC250, DC500, DC750, DC1000 |
||||||||
Rated insulation voltage Ui (V) |
1000 |
1000 |
1000 |
1000 |
|||||
Rated impulse withstand voltage Uimp(kV) |
8000 |
8000 |
8000 |
8000 |
|||||
Flashover distance (mm) |
≯50 |
≯50 |
≯50 |
≯50 |
|||||
Use cat. |
A |
||||||||
Pole number |
3 |
4 |
3 |
4 |
3 |
4 |
3 |
4 |
|
Service life |
Electrical |
3000 |
3000 |
1000 |
1000 |
||||
Mechanical |
10000 |
10000 |
5000 |
5000 |
|||||
Breaking capacity |
|||||||||
Rated ultimate short-circuit breaking capacity lcu(kA) |
DC250V |
30 |
/ |
30 |
/ |
30 |
/ |
30 |
/ |
DC500V |
25 |
/ |
25 |
/ |
25 |
/ |
25 |
/ |
|
DC750V |
15 |
15 |
15 |
20 |
15 |
20 |
15 |
20 |
|
DC1000V |
/ |
10 |
/ |
20 |
/ |
20 |
/ |
20 |
|
Rated service short-circuit breaking capacity lcs(kA) |
DC250V |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
/ |
DC500V |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
/ |
|
DC750V |
75%lcu |
75%lcu |
75%lcu |
75%lcu |
75%lcu |
75%lcu |
75%lcu |
||
DC1000V |
/ |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
/ |
75%lcu |
|
Outline dim. (mm) |
Height |
155 |
165 |
257 |
275 |
||||
Width |
90 |
120 |
105 |
140 |
140 |
184 |
210 |
280 |
|
Depth |
100 |
105 |
154 |
154 |
|||||
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