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18/28 IZM circuit-breakers, IN switch-disconnectors
IZMX16 circuit-breakers
2010 CA08103002Z-EN
www.eaton.comIZMX16 circuit-breakers
IZMX16B…06…
IZMX16B…08…
IZMX16B…10…
General
Standards
IEC/EN 60947
IEC/EN 60947
IEC/EN 60947
Ambient temperature
Storage
°C
-40 - +70 (devices with LCD display -20 - +70)
Operation (open)
°C
-25 - +70 (devices with LCD display -20 - +70)
Mounting position
Utilization category
B
B
B
Protection type
IP20, IP54 with protective cover
Direction of incoming supply
Any
Any
Any
Main contacts
Rated operational current = Rated uninterrupted
current
I
n
= I
u
A
630
800
1000
Rated uninterrupted current at 50 °C
1)
I
u
A
599
760
950
Rated uninterrupted current at 60 °C
1)
I
u
A
567
720
900
Rated uninterrupted current at 70 °C
1)
I
u
A
504
640
800
Rated impulse withstand voltage
U
imp
V AC 8000
8000
8000
Rated operational voltage
U
e
V AC 690
690
690
Use in IT electrical power networks up to U = 440 V I
IT
kA 21
21
21
Use in IT electrical power networks up to U = 690 V I
IT
kA -
-
-
Overvoltage category/pollution degree
III/3
III/3
III/3
Rated insulation voltage
U
i
V
1000
1000
1000
Switching capacity
Rated short-circuitmaking
capacity
Up to 440 V50/60 Hz
I
cm
kA 88
88
88
Up to 690 V 50/60 Hz
I
cm
kA 88
88
88
Rated short-time withstand
current 50/60 Hz
t = 1 s
I
cw
kA 42
42
42
t = 3 s
I
cw
kA -
-
-
Rated short-circuit breaking capacity I
cn
IEC/EN 60947 Operating sequence I
cu
O-t-CO
Up to 240 V 50/60 Hz
I
cu
kA 42
42
42
Up to 440 V 50/60 Hz
I
cu
kA 42
42
42
Up to 690 V 50/60 Hz
I
cu
kA 42
42
42
Up to 1100 V 50/60 Hz
I
cu
kA -
-
-
IEC/EN60947OperatingsequenceI
cs
O-t-CO-t-CO
Up to 240 V 50/60 Hz
I
cs
kA 42
42
42
Up to 440 V 50/60 Hz
I
cs
kA 42
42
42
Up to 690 V 50/60 Hz
I
cs
kA 42
42
42
Up to 1100 V 50/60 Hz
I
cs
kA -
-
-
Switching times
Total opening delay
ms
20
20
20
Closing delay
ms
25
25
25
Closing delay electrical (via closing release)
ms
30
30
30
Opening delay electrical ( via shunt release /
undervoltage release)
ms
25/50
25/50
25/50
Opening delay via trip electronics
(non-delayed short-circuit release)
ms
25
25
25
Lifespan
Mechanical, without maintenance Operations
12500
12500
12500
Mechanical, with maintenance Operations
20000
20000
20000
Electrical, without maintenance Operations
10000
10000
10000
Electrical, with maintenance
Operations
10000
10000
10000
Maximum operating frequency
Operations/h
60
60
60
Heat dissipation at rated
operational current I
n
3-phase symmetric loading
Fixed
W 36
59
92
Withdrawable
W 50
80
125
Weight
Fixed
3 pole
kg
15
15
15
4 pole
kg
20
20
20
Withdrawable
3 pole
kg
39
39
39
4 pole
kg
47
47
47
Empty cassette
3 pole
kg
18
18
18
4 pole
kg
21
21
21
Notes
1)
Permissible continuous current for circuit-breakers used at different temperatures within a switchgear assembly.
The expected internal temperatures can be estimated according to the applicable IEC Standards.
30˚ 30˚
30˚ 30˚
IZMX16...