System overview   
4.2 Key data 
  3VL molded-case circuit breakers 
30  System Manual, 03/2009, 110 0110 - 02 DS 01 
4.2  Key data 
4.2.1  General data - 3VL molded-case circuit breakers 
 
Type  VL160X 
3VL1 
VL160 
3VL2 
VL250 
3VL3 
VL400 
VL4 
VL630 
3VL5 
VL800 
VL6 
VL1250 
3VL7 
VL1600 
3VL8 
Max. rated current I
n 
 [A]  160  160  250  400  630  800  1250  1600 
N pole [A]  160  160  250  400  630  800  1250  1600 
Rated insulation voltage V
i 
in accordance with IEC 60947-2 
Main current paths [V AC]  800  800  800  800  800  800  800  800 
Auxiliary circuits [V AC]  690  690  690  690  690  690  690  690 
Rated impulse withstand voltage V
imp
 
Main current paths [kV]  8  8  8  8  8  8  8  8 
Auxiliary circuits [kV]  4 4 4 4 4 4 4 4 
Rated operating voltage U
e
 
IEC 50/60 Hz [V AC]  690  690  690  690  690  690  690  690 
IEC 50/60 Hz (V DC
2)
)  500  600  600  600  600  -
1)
 -
1)
 -
1)
 
NEMA 60 Hz (V AC)  600  600  600  600  600  600  600  600 
Utilization category 
(IEC 60947-2) 
A  A  A  A  A 
B
3)
 
A 
B
3)
 
A 
B
3)
 
A 
B
3)
 
Permissible ambient temperature 
4)
 
Operation [°C]  -25 to  
+70 
-25 to 
+70 
-25 to 
+70 
-25 to 
+70 
-25 to 
+70 
-25 to  
+70 
-25 to  
+70 
-25 to 
+70 
Storage [°C]  -40 to 
+80 
-40 to 
+80 
-40 to 
+80 
-40 to 
+80 
-40 to 
+80 
-40 to 
+80 
-40 to 
+80 
-40 to 
+80 
Permissible load at different ambient temperatures 
in the immediate vicinity of the circuit breaker, related to the rated current of the circuit breaker 
•  Circuit breaker for system protection 
TM/ETU up to 50 °C [%] 100 /-  100 / 100 100 / 100 100 / 100 100 / 100 - / 100  - / 100  - / 100 
TM/ETU up to 60 °C [%] 93 / -  93 / 95  93 / 95  93 / 95  93 / 95  - / 95  - / 95  - / 95 
TM/ETU up to 70 °C [%] 86 / -  86 / 80  86 / 80  86 / 80  86 / 80  - / 80  - / 80  - / 80 
•  Circuit breakers for motor protection 
Up to 50 °C [%] -  100  100  100  100  -  -  - 
At 60 °C [%] -  95  95  95  95  -  -  - 
At 70 °C [%] -  80  80  80  80  -  -  - 
•  Circuit breakers for starter combinations and non-automatic air circuit breakers 
up to 50 °C [%] 100  100  100  100  100  100  100  100 
At 60 °C [%] 93  93  93  93  93  93  93  93 
At 70 °C [%] 86  86  86  86  86  86  86  86