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18/104 IZM circuit-breakers, IN switch-disconnectors
Circuit-breaker IZM26
2010 CA08103002Z-EN
www.eaton.comIZM32N…16… IZM32N…20… IZM32N…25…
General
Standards
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)
Built-in position
Utility category
B
B
B
Protection type
IP20, IP54 with protective cover
Direction of incoming supply
Any
Main contacts
Rated operational current = Rated uninterrupted current
I
n
= I
u
A
1600
2000
2500
Rated uninterrupted current at 50 °C
1)
I
u
A
1600
2000
2500
Rated uninterrupted current at 60 °C
1)
I
u
A
1600
2000
2500
Rated uninterrupted current at 70 °C
1)
I
u
A
1600
2000
2500
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 23
28
39
Use in IT electrical power networks up to U = 690 V
I
IT
kA 23
28
39
Overvoltage category/pollution degree
III/3
III/3
III/3
Rated insulation voltage
U
i
V
1000
1000
1000
Switching capacity
Rated short-circuit making capacity
Upto 440V 50/60Hz I
cm
kA 179
179
179
Upto 690V 50/60Hz I
cm
kA 179
179
179
Rated short-time withstand current 50/60 Hz t = 1 s
I
cw
kA 85
85
85
t = 3 s
I
cw
kA 65
65
65
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 85
85
85
Up to 440 V 50/60 Hz
I
cu
kA 85
85
85
Up to 690 V 50/60 Hz
I
cu
kA 85
85
85
Up to 1100 V 50/60 Hz
I
cu
kA –
–
–
IEC/EN 60947 Operating sequence I
cs
O-t-CO-t-CO
Up to 240 V 50/60 Hz
I
cs
kA 85
85
85
Up to 440 V 50/60 Hz
I
cs
kA 85
85
85
Up to 690 V 50/60 Hz
I
cs
kA 85
85
85
Up to 1100 V 50/60 Hz
I
cs
kA –
–
–
Switching times
Total opening delay
ms
30
30
30
Closing delay
ms
35
35
35
Closing delay electrical (via closing release)
ms
40
40
40
Opening delay electrical ( via shunt release / undervoltage release)
ms
35/70
35/70
35/70
Opening delay via trip electronics (non-delayed short-circuit release)
ms
35
35
35
Durability
Mechanical, without maintenance
Operations
10000
10000
8000
Mechanical, with maintenance
Operations
16000
16000
12800
Electrical, without maintenance
Operations
10000
10000
8000
Electrical, with maintenance
Operations
10000
10000
8000
Maximum operating frequency
Operations/h
60
60
60
Heat dissipation at rated operational current I
n
3-phase symmetric loading
Fixed
W 120
190
200
Withdrawable
W 240
380
500
Weight
Fixed
3 pole
kg
68
68
70
4 pole
kg
86
86
89
Withdrawable
3 pole
kg
80
80
88
4 pole
kg
102
102
115
Empty cassette
3 pole
kg
34
34
58
4 pole
kg
38
38
60
Notes
1)
Permissible continuous current for circuit-breakers used at different temperatures within switchgear.
The expected internal temperatures can be estimated according to the applicable IEC regulations.
30˚ 30˚
30˚ 30˚
IZM…