436 / 543
18/106 IZM circuit-breakers, IN switch-disconnectors
Circuit-breaker IZM26
2010 CA08103002Z-EN
www.eaton.comIZM32H…32… IZM32S…
IZM40N…40…
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 3200
3200
4000
Rated uninterrupted current at 50 °C
1)
I
u
A 3100
3100
4000
Rated uninterrupted current at 60 °C
1)
I
u
A 2800
2800
4000
Rated uninterrupted current at 70 °C
1)
I
u
A 2550
2550
3776
Rated impulse withstand voltage
U
imp
V AC 8000
8000
12000
Rated operational voltage
U
e
V AC 690
1100
690
Use in IT electrical power networks up to U = 440 V
I
IT
kA 39
–
48
Use in IT electrical power networks up to U = 690 V
I
IT
kA 39
39
–
Overvoltage category/pollution degree
III/3
III/3
III/3
Rated insulation voltage
U
i
V
1000
1100
1000
Switching capacity
Rated short-circuit making capacity
Up to 440 V 50/60 Hz I
cm
kA 210
210
179
Up to 690 V 50/60 Hz I
cm
kA 179
210
137
Rated short-time withstand current 50/60 Hz
t = 1 s
I
cw
kA 85
–
85
t = 3 s
I
cw
kA 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 100
–
85
Up to 440 V 50/60 Hz
I
cu
kA 100
–
85
Up to 690 V 50/60 Hz
I
cu
kA 85
–
65
Up to 1100 V 50/60 Hz
I
cu
kA –
25
–
IEC/EN 60947 Operating sequence I
cs
O-t-CO-t-CO
Up to 240 V 50/60 Hz
I
cs
kA 100
–
85
Up to 440 V 50/60 Hz
I
cs
kA 100
–
85
Up to 690 V 50/60 Hz
I
cs
kA 85
–
65
Up to 1100 V 50/60 Hz
I
cs
kA –
25
–
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
8000
8000
5000
Mechanical, with maintenance
Operations
12800
12800
8000
Electrical, without maintenance
Operations
8000
8000
3000
Electrical, with maintenance
Operations
8000
8000
3000
Maximum operating frequency
Operations/h
60
60
60
Heat dissipation at rated operational current I
n
3-phase symmetric loading
Fixed
W 320
320
560
Withdrawable
W 800
800
1100
Weight
Fixed
3 pole
kg
70
70
83
4 pole
kg
89
89
105
Withdrawable
3 pole
kg
88,
88
98
4 pole
kg
115
115
121
Empty cassette
3 pole
kg
60
60
60
4 pole
kg
73
73
73
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…