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Home  >> Products >> Low Voltage >> Mini Circuit Breaker >> Mini Circuit Breaker With High Breaking Capacity (DC circuit)
   
1. Aplication

 

It's applied for the overload, short circuit protection in DC circuit, esp. in the communication, electricity, engine etc.

Rated breaking capacity 6000, C curve, instantaneous tripping 5~10In
Rated voltage(A)
Type
Type

 
1
DB7-1/1/1-/C-DC
DB7-1/2/1-/C-DC
2
DB7-2/1/1-/C-DC
DB7-2/2/1-/C-DC
3
DB7-3/1/1-/C-DC
DB7-3/2/1-/C-DC
4
DB7-4/1/1-/C-DC
DB7-4/2/1-/C-DC
6
DB7-6/1/1-/C-DC
DB7-6/2/1-/C-DC
10
DB7-10/1/1-/C-DC
DB7-10/2/1-/C-DC
16
DB7-16/1/1-/C-DC
DB7-16/2/1-/C-DC
20
DB7-20/1/1-/C-DC
DB7-20/2/1-/C-DC
25
DB7-25/1/1-/C-DC
DB7-25/2/1-/C-DC
32
DB7-32/1/1-/C-DC
DB7-32/2/1-/C-DC
40
DB7-40/1/1-/C-DC
DB7-40/2/1-/C-DC
50
DB7-50/1/1-/C-DC
DB7-50/2/1-/C-DC
63
DB7-63/1/1-/C-DC
DB7-63/2/1-/C-DC
Rate voltage of single pole 250V T=4ms rate voltage of couple pole. 250V T=4ms
 
 
2. Overload current tripping characteristic
 
Code
Rated current In(A)
Start state
Testing current (A)
Limited current
Appointed resalt
a
B,C,D
≤63
cold state
1.13In
≤1h
non-trip
b
B,C,D
≤63
following up the A type test
1.45In
<1h
trip
c
B,C,D
≤63
cold state
2.55In
>1s~<60s
trip
>32
>1s~<120s
d
B
all
cold state
3In
≥0.1s
non-trip
C
5In
D
10In
e
B
alls
cold state
5In
0.1s
trip
C
10In
D
20In
 
 
3. Tripping characteristic curve
 
  B characteristic C characteristic D characteristic  
 
 
loading capacity curve ( for example 1 pole)
loading ability value

the allowed load in the operating state for the related temperature controller and n switches: IDL=InKT(T)Kn(N).

 
 
4. Circuit break of energy consumptipn

the current of short circuit

the current of short circuit
the max energy consumption of B characteristic single pole
the max energy consumption of C characteristic single pole

 

 
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