DB25/25A ABB, DB25/25A Datasheet - Page 29

• Manufacturer Part Number: DB25/25A
• Description: MOUNTING BASE, TA25DU
• Manufacturer: ABB

Specifications of DB25/25A

• Svhc: No SVHC (18-Jun-2010)

Electrical Durability for AC-1 Utilization Category U
Switching non-inductive or slightly inductive loads. The breaking current I
Example:
I
Using the AC-1 curves above select the AL 26 contactor at intersection " " (35 A / 560 000 cycles).
Electrical Durability for AC-3 Utilization Category - U
Switching cage motors: starting and switching off running motors. The breaking current I
(I
Example:
Motor power 9 kW for AC-3 - U
9 kW, 400 V corresponds to I
3 - U
Low Voltage Products
0.56
c
2.3
0.5
0.3
0.2
0.5
0.3
e
10
/ AC-1 = 35 A – Electrical durability required = 560 000 cycles.
Millions of
cycles
Millions of
cycles
= motor full load current).
5
3
2
1
5
3
2
1
e
2
< 500 V).
2
1 3 5 7 9
9
7
5
3
1
9
7
5
3
1
3
3
9
7
5
3
1
9
7
5
3
1
9
7
5
3
1
5
5
e
= 18.3 A. For AC-3: I
e
= 400 V utilization – Electrical durability required = 2.3 million cycles.
AL.. Contactors
Electrical Durability
10
10
1
3
5
c
= I
7
18.3
20
e
20
9
. Select the AL 26 contactor at intersection " " (18.3 A / 2.3 million cycles) on the curves (AC-
1 3 5 7 9
1 3 5 7 9
30
30
35
50
50
c
for AC-1 is equal to the rated operational current of the load.
e
e
< 690 V.
< 500 V.
100
100
1
c
for AC-3 is equal to the rated operational current I
Ambient Temperature < 55 °C
3
Ambient Temperature < 55 °C
5
7
200
200
9
1 3 5 7 9
1 3 5 7 9
300
300
500
500
Breaking current I
Breaking current I
1SBC101139C0201
1000
1000
c
c
(A)
(A)
27
e