Designing connections u 630 A
between a device and busbars
System M
Electrical characteristics
Compact NS630 to NS1600
Fixed
Compact circuit breakers
Fixed NS630b to NS1600
DD383544
Characteristics
1
Connection.
2
Horizontal link.
Using the data below, it is possible to determine the size of the copper bars and the
maximum permissible currents when making the connections to busbars for a
vertical, fixed Compact NS630b / NS1600, taking into account the ambient
temperature around the switchboard and the IP value.
Connection
Flat bars, 5 mm thick
Device
NS630b
NS800
NS1000
NS1250
NS1600(1)
Permissible current (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Average ambient temperature around the switchboard
25 °C
30 °C
35 °C
IP y 31
IP > 31
IP y 31
IP > 31
IP y 31
IP > 31
1b 50 x 5 1b 50 x 5 1b 50 x 5 1b 50 x 5 1b 50 x 5 1b 50 x 5
630
630
630
630
630
630
2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5
800
800
800
800
800
800
2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5 2b 50 x 5
1000
1000
1000
1000
1000
1000
3b 50 x 5 3b 50 x 5 3b 50 x 5 3b 50 x 5 3b 50 x 5 3b 50 x 5
1250
1250
1250
1250
1250
1250
4b 50 x 5 4b 50 x 5 4b 50 x 5 4b 50 x 5 4b 50 x 5 4b 50 x 5
1600
1550
1600
1500
1550
1450
40 °C
IP y 31
1b 50 x 5
630
2b 50 x 5
800
2b 50 x 5
1000
3b 50 x 5
1250
4b 50 x 5
1500
IP > 31
1b 50 x 5
630
2b 50 x 5
800
2b 50 x 5
1000
3b 50 x 5
1200
4b 50 x 5
1400
45 °C
IP y 31
1b 50 x 5
630
2b 50 x 5
800
2b 50 x 5
1000
3b 50 x 5
1250
4b 50 x 5
1450
IP > 31
1b 50 x 5
630
2b 50 x 5
800
2b 50 x 5
970
3b 50 x 5
1150
4b 50 x 5
1350
50 °C
IP y 31
1b 50 x 5
630
2b 50 x 5
800
2b 50 x 5
1000
3b 50 x 5
1200
4b 50 x 5
1400
IP > 31
1b 50 x 10
630
1b 50 x 10
800
1b 50 x 10
970
1b 50 x 10
1130
2b 50 x 10
1350
50 °C
IP y 31
1b 50 x 10
630
1b 50 x 10
800
1b 50 x 10
1000
1b 50 x 10
1180
2b 50 x 10
1400
IP > 31
bb
b
b
b
b
b connection not possible.
(1) Make the neutral connection with two bars, 50 x 5 mm.
Flat bars, 10 mm thick
Device
NS630b
NS800
NS1000
NS1250
NS1600 (1)
Permissible current (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Size per phase
I (A)
Average ambient temperature around the switchboard
25 °C
30 °C
35 °C
IP y 31
IP > 31
IP y 31
IP > 31
IP y 31
IP > 31
1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10
630
630
630
630
630
630
1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10
800
800
800
800
800
800
1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10
1000
1000
1000
1000
1000
1000
1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10 1b 50 x 10
1250
1250
1250
1250
1250
1250
2b 50 x 10 2b 50 x 10 2b 50 x 10 2b 50 x 10 2b 50 x 10 2b 50 x 10
1600
1550
1600
1500
1550
1450
40 °C
IP y 31
1b 50 x 10
630
1b 50 x 10
800
1b 50 x 10
1000
1b 50 x 10
1250
2b 50 x 10
1500
IP > 31
1b 50 x 10
630
1b 50 x 10
800
1b 50 x 10
1000
1b 50 x 10
1180
2b 50 x 10
1400
45 °C
IP y 31
1b 50 x 10
630
1b 50 x 10
800
1b 50 x 10
1000
1b 50 x 10
1230
2b 50 x 10
1450
b connection not possible.
(1) Make the neutral connection with 2 bars, 50 x 10 mm.
Note: The values indicated above have been validated for Prisma iPM switchboards.
E-18
IP > 31
bb
bb
bb
bb
bb