Technical data

74 IZMX circuit-breakers, INX switch-disconnectors
Selectivity: incoming circuit-breaker, outgoing circuit-breaker
CA01305001Z-EN www.eaton.com CA01305001Z-EN www.eaton.com
IZMX circuit-breakers, INX switch-disconnectors
Selectivity: incoming circuit-breaker, outgoing circuit-breaker
I
n
: Rated operational current
I
u
: Rated uninterrupted current
I
Icu
: Rated short-circuit breaking
capacity
I
i
: Set value non-delayed short-circuit
releases
Selectivity 415 V AC
Selectivity exists between incoming circuit-
breaker 1 and outgoing circuit-breaker 2 if,
only outgoing breaker 2 trips at position 2 -
during a short-circuit.
System sections 3 and 4 remain operational.
Selection:
Provided that the short-circuit current does not exceed those -
values specified (I
cc rms
).
These details represent the limits of selectivity.
Both circuit-breakers will switch off with higher short-circuit -cur-
rents.
On IZM circuit-breakers with V, U, P releases, the delay time t
sd
must be at least 100 ms longer than the delay time of the next
downstream levels (2, 3, 4).
2
1
34
Incoming
circuit-
breaker (1)
IZMX16...-V...(-U...)(-P...) IZMX40...–V...(-U...)(-P...)
I
n
[A] 630 630 630 800 800 800 1.000 1.000 1.000 1.250 1.250 1.250 1.600 1.600 1.600 800 800 800 1.000 1.000 1.000 1.250 1.250 1.250 1.600 1.600 1.600 2.000 2.000 2.000 2.500 2.500 2.500 3.200 3.200 3.200 4.000 4.000 4.000
I
cu
[kA] 42 50 65 42 50 65 42 50 65 42 50 65 42 50 65 66 85 105 66 85 105 66 85 105 66 85 105 66 85 105 66 85 105 66 85 105 66 85 105
I
i
[A] 7.560 7.560 7.560 9.600 9.600 9.600 12.000 12.000 12.000 15.000 15.000 15.000 19.200 19.200 19.200 11200 11200 11200 14000 14000 14000 17500 17500 17500 19200 19200 19200 24000 24000 24000 30000 30000 30000 32000 32000 32000 40000 40000 40000
Outgoing
circuit-breaker (2)
I
u
[A]
I
cu2(415V)
[kA]
B N H B N H B N H B N H B N H BNHBNHBNHBNHBNHBNHBNHBNH
Prospective short-circuit current (I
cc rms
in kA) Prospective short-circuit current (I
cc rms
in kA)
NZMB(C)(N)
(H)1-A(M)...
20 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
25 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
32 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
40 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
50 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
63 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
80 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
100 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
125 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
160 25 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
NZMB(C)(N)
(H)2-A(M)(V)...
20 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
25 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
32 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
40 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
50 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
63 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
80 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
90 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
100 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
125 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
140 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
160 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
200 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
220 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
250 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
300 25 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
NZMC(N)(H)
3-A(M)(V)...
220 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
250 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
320 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
350 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
400 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
450 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
500 36 - 150
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
630 36 - 150
– – – T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
NZMN(H)
4-A(M)(V)...
550 50 - 100
T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
630 50 - 100
– – – T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T T
800 50 - 100
– – – – – – T T T T T T T T T – – – T T T T T T T T T T T T T T T T T T T T T
875 50 - 100
– – – – – – T T T T T T T T T – – – T T T T T T T T T T T T T T T T T T T T T
1000 50 - 100
– – – – – – – – – T T T T T T – – – – – – T T T T T T T T T T T T T T T T T T
1250 50 - 100
– – – – – – – – – – – – T T T – – – – – – – – – T T T T T T T T T T T T T T T
1400 50 - 100
– – – – – – – – – – – – T T T – – – – – – – – – T T T T T T T T T T T T T T T
1600 50 - 100
– – – – – – – – – – – – – – – – – – – – – – – – – – – T T T T T T T T T T T T
Notes B = Basic switching capacity, N = Normal switching capacity, H = High switching capacity, T = Total selectivity
75
IZMX16... IZMX40...