Moeller NK1230-1045GB
IZM Circuit-Breakers
4-pole
Circuit-Breakers, Switch-Disconnectors
from 630 A to 6300 A
Circuit-Breakers, Switch-Disconnectors
from 630 A to 6300 A
Moeller NK1230-1045GB
IZM Circuit-Breakers
4-pole
Basic switching capacity (B) Normal switching capacity (N)
Icu = Ics = 50kA at 415 V 50/60 Hz Icu = Ics = 65kA at 415 V 50/60 Hz
Rating data Type
Article no. Price
See Price List Std. pack Type
Article no. Price
See Price List Std. pack Notes
Rated
current Setting range
Overload
release Short-circuit release
Delayed Non-delayed
InIrIsd Ii
AAA A
Frame size 1
Circuit-breakers for distribution circuit protection (A)
630 315 – 630 – 1260 – 5040 IZMB1-4-A630
229938 1 off IZMN1-4-A630
229943 1 off • Adjustable overload release Ir = 0.5 – 1 x In
• Delay time tr = 10s at 6 x Ir
• Adjustable non-delayed short-circuit release Ii = 2 – 8 x In
• Supplied without overload protection in the 4th pole
800 400 – 800 – 1600 – 6400 IZMB1-4-A800
229939 IZMN1-4-A800
229944
1000 500 – 1000 – 2000 – 8000 IZMB1-4-A1000
229940 IZMN1-4-A1000
229945
1250 625 – 1250 – 2500 – 10000 IZMB1-4-A1250
229941 IZMN1-4-A1250
229946
1600 800 – 1600 – 3200 – 12800 IZMB1-4-A1600
229942 IZMN1-4-A1600
229947
Circuit-breaker for selective operation (V) and motor protection
630 252 – 630 788 – 7560 12600 IZMB1-4-V630
229948 1 off IZMN1-4-V630
229953 1 off • Adjustable overload release Ir = 0.4 – 1 x In
• Delay time tr = 10s at 6 x Ir
• Adjustable delayed short-circuit release Isd = 1.25 – 12 x In
• Delay time tsd = 0,20 (motor protection), 100, 200, 300, 400 ms
• Non-delayed short-circuit release Ii f 20 x In
• without overload protection in 4th pole (optional with overload
protection in 4th pole: +IZM-XT additionally required)
800 320 – 800 1000 – 9600 16000 IZMB1-4-V800
229949 IZMN1-4-V800
229954
1000 400 – 1000 1250 – 12000 20000 IZMB1-4-V1000
229950 IZMN1-4-V1000
229955
1250 500 – 1250 1563 – 15000 25000 IZMB1-4-V1250
229951 IZMN1-4-V1250
229956
1600 640 – 1600 2000 – 19200 32000 IZMB1-4-V1600
229952 IZMN1-4-V1600
229957
Circuit-breaker for universal protection (U) and motor protection
630 252 – 630 788 – 7560 1.5 – 12 x In
OFF IZMB1-4-U630
229958 1 off IZMN1-4-U630
229963 1 off • Adjustable overload release Ir = 0.4 – 1 x In
• Delay time tr = 2 – 30 s with setting to J with 6 x Ir
tr = 1, 2, 3, 4, 5 s with setting to I
4
t
• Adjustable delayed short-circuit release Isd = 1.25 – 12 x In
• Delay time tsd = OFF, 20 (motor protection), 100, 200, 300, 400 ms
• Adjustable non-delayed short-circuit release Ii = 1.5 – 12 x In
max. permissible setting value: 0.8 x Ics
OFF: Ics = Icw
• with overload protection in 4
th
pole, can be set to OFF, 100 % or 50 % I
r
800 320 – 800 1000 – 9600 IZMB1-4-U800
229959 IZMN1-4-U800
229964
1000 400 – 1000 1250 – 12000 IZMB1-4-U1000
229960 IZMN1-4-U1000
229965
1250 500 – 1250 1563 – 15000 IZMB1-4-U1250
229961 IZMN1-4-U1250
229966
1600 640 – 1600 2000 – 19200 IZMB1-4-U1600
229962 IZMN1-4-U1600
229967
Digital circuit-breaker (D)
630 252 – 630 1.25 x In – 0.8 x Icw 1.5 x In – 0.8 x Ics IZMB1-4-D630
229968 please
enquire 1 off IZMN1-4-D630
229973 please
enquire 1 off • Adjustable overload release Ir = 0.4 – 1 x In
• Delay time tr = 2 – 30 s with setting to J
tr = 1, 2, 3, 4, 5 s with setting to I
4
t
• Adjustable non-delayed short-circuit release
Isd = 1.25 x In – 0.8 x Icw with max. permissible setting
of 0.8 x Icw is the setting of the delay time tsd only valid up
to a max. of 400 ms Icw see the technical data
• Delay time
tsd = OFF, 20, 100, 200, 300, 400, 500, 1000, 2000, 3000, 4000 ms
• Adjustable non-delayed short-circuit release
Ii = 1.5 x In – 0.8 x Ics
max. permissible setting value: 0.8 x Ics
OFF: Ics = Icw
• with overload protection in 4
th
pole, can be set to OFF, 100 % or 50 % I
r
800 320 – 800 IZMB1-4-D800
229969 IZMN1-4-D800
229975
1000 400 – 1000 IZMB1-4-D1000
229970 IZMN1-4-D1000
229976
1250 500 – 1250 IZMB1-4-D1250
229971 IZMN1-4-D1250
229977
1600 640 – 1600 IZMB1-4-D1600
229972 IZMN1-4-D1600
229978
I