Product range |
Air circuit-breakers/switch-disconnectors |
Product range |
Open circuit-breakers |
Current Range |
Up to 4000 A |
Protective function |
Selective operation |
Installation type |
Withdrawable |
Construction size |
Cassette must be separately ordered. |
Release system |
Main terminals must be separately ordered. |
Standard/Approval |
IZMX16 |
Number of poles |
Electronic release |
Degree of Protection |
IEC |
Rated current = rated uninterrupted current [In = Iu] |
3 pole |
up to 440 V 50/60 Hz [Icu
] |
IP31 with door seals, IP55 with protective cover |
up to 440 V 50/60 Hz [Ics
] |
suitable for zone selectivity optionally fittable by user with comprehensive accessories |
Overload release, min. [Ir
] |
1000 A |
Overload release, max. [Ir
] |
66 kA |
Non-delayed [Ii = In x …] |
50 kA |
Delayed [Isd = Ir x …] |
400 A |
Standards |
1000 A |
Ambient temperature >Storage [ϑ] |
2 - 15, OFF |
Ambient temperature >Ambient temperature |
1,5 - 10 |
Mounting position |
IEC/EN 60947 |
Utilization category |
-20 - +70 °C |
Degree of Protection |
-20 - +70 °C |
Direction of incoming supply |
|
Rated current = rated uninterrupted current [In = Iu] |
|
Rated uninterrupted current at 50 °C [Iu] |
B |
Rated uninterrupted current at 60 °C [Iu] |
IP31 with door seals, IP55 with protective cover |
Rated uninterrupted current at 70 °C [Iu] |
as required |
Rated impulse withstand voltage [Uimp] |
1000 A |
Rated operational voltage [Ue] |
1000 A |
Use in IT electrical power networks up to [U] |
1000 A |
Overvoltage category/pollution degree |
1000 A |
Rated insulation voltage [Ui
] |
12000 V AC |
Rated short-circuit making capacity [Icm
] >up to 440 V 50/60 Hz [Icm
] |
690 V AC |
Rated short-circuit making capacity [Icm
] >up to 690 V 50/60 Hz [Icm
] |
440 V |
Rated short-time withstand current 50/60 Hz >t = 1 s [Icw
] |
III/3 |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Icu O-t-CO >up to 240 V 50/60 Hz [Icu
] |
1000 V |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Icu O-t-CO >up to 440 V 50/60 Hz [Icu
] |
145 kA |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Icu O-t-CO >up to 690 V 50/60 Hz [Icu
] |
88 kA |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Ics O-t-CO-t-CO >up to 240 V 50/60 Hz [Ics
] |
42 kA |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Ics O-t-CO-t-CO >up to 440 V 50/60 Hz [Ics
] |
85 kA |
Rated short-circuit breaking capacity Icn [Icn
] >IEC/EN 60947 operating sequence Ics O-t-CO-t-CO >up to 690 V 50/60 Hz [Ics
] |
66 kA |
Operating times >Closing delay via spring release |
42 kA |
Operating times >Total opening delay via shunt release |
50 kA |
Operating times >Total opening delay via undervoltage release |
50 kA |
Operating times >Total opening delay on non-delayed short-circuit release (up to complete arc quenching) |
42 kA |
Lifespan >Lifespan, mechanical [Switching cycles (ON/OFF)] |
30 ms |
Lifespan >Lifespan, mechanical with maintenance [Switching cycles (ON/OFF)] |
30 ms |
Lifespan >Lifespan, electrical [Switching cycles (ON/OFF)] |
50 ms |
Lifespan >Lifespan, electrical with maintenance [Switching cycles (ON/OFF)] |
27 ms |
Maximum operating frequency [Operations/h] |
12500 |
Heat dissipation at rated current In >Withdrawable units (switch with cassette) |
25000. |
Withdrawable >3-pole |
10000 |
Cassette >3 pole |
20000. |
Copper bar >Withdrawable units >Black |
60 |
Rated operational current for specified heat dissipation [In] |
125 W |
Equipment heat dissipation, current-dependent [Pvid] |
28 kg |
Operating ambient temperature min. |
18 kg |
Operating ambient temperature max. |
2 x 5 x 60 mm |
10.2 Strength of materials and parts >10.2.2 Corrosion resistance |
These are values used in separate switchgear. The actual values will depend on the temperature around the circuit-breaker, which is influenced by the ambient temperature, the degree of protection (IP), the mounting height, the partitions, and any external ventilation. Depending on the specific switchgear design, this may result in derating, which can then be compensated for by increasing the cross-sectional area. Temperature rise tests in the specific switchgear can provide specific and detailed information. |
10.2 Strength of materials and parts >10.2.3.1 Verification of thermal stability of enclosures |
Permissible continuous current for circuit‐breakers operating in switchboards at various internal ambient temperatures. The switchboard’s internal ambient temperature should be estimated using the calculation methods of IEC regulation. |
10.2 Strength of materials and parts >10.2.3.2 Verification of resistance of insulating materials to normal heat |
1000 A |
10.2 Strength of materials and parts >10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects |
125 W |
10.2 Strength of materials and parts >10.2.4 Resistance to ultra-violet (UV) radiation |
-20 °C |
10.2 Strength of materials and parts >10.2.5 Lifting |
+70 °C |
10.2 Strength of materials and parts >10.2.6 Mechanical impact |
Meets the product standard´s requirements. |
10.2 Strength of materials and parts >10.2.7 Inscriptions |
Meets the product standard´s requirements. |
10.3 Degree of protection of ASSEMBLIES |
Meets the product standard´s requirements. |
10.4 Clearances and creepage distances |
Meets the product standard´s requirements. |
10.5 Protection against electric shock |
Meets the product standard´s requirements. |
10.6 Incorporation of switching devices and components |
Does not apply, since the entire switchgear needs to be evaluated. |
10.7 Internal electrical circuits and connections |
Does not apply, since the entire switchgear needs to be evaluated. |
10.8 Connections for external conductors |
Meets the product standard´s requirements. |
10.9 Insulation properties >10.9.2 Power-frequency electric strength |
Does not apply, since the entire switchgear needs to be evaluated. |
10.9 Insulation properties >10.9.3 Impulse withstand voltage |
Meets the product standard´s requirements. |
10.9 Insulation properties >10.9.4 Testing of enclosures made of insulating material |
Does not apply, since the entire switchgear needs to be evaluated. |
10.10 Temperature rise |
Does not apply, since the entire switchgear needs to be evaluated. |
10.11 Short-circuit rating |
Is the panel builder´s responsibility. |
10.12 Electromagnetic compatibility |
Is the panel builder´s responsibility. |
10.13 Mechanical function |
Is the panel builder´s responsibility. |
Rated permanent current Iu |
Is the panel builder´s responsibility. |
Rated voltage |
Is the panel builder´s responsibility. |
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz |
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices. |
Overload release current setting |
Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Adjustment range short-term delayed short-circuit release |
Is the panel builder´s responsibility. The specifications for the switchgear must be observed. |
Adjustment range undelayed short-circuit release |
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed. |
Integrated earth fault protection |
1000 A |
Type of electrical connection of main circuit |
690 - 690 V |
Device construction |
65 kA |
Suitable for DIN rail (top hat rail) mounting |
500 - 1000 A |
DIN rail (top hat rail) mounting optional |
2000 - 10000 A |
Number of auxiliary contacts as normally closed contact |
2000 - 12000 A |
Number of auxiliary contacts as normally open contact |
No |
Number of auxiliary contacts as change-over contact |
Rail connection |
With switched-off indicator |
Built-in device slide-in technique (withdrawable) |
With under voltage release |
No |
Number of poles |
No |
Position of connection for main current circuit |
0 |
Type of control element |
0 |
Complete device with protection unit |
2 |
Motor drive integrated |
Yes |
Motor drive optional |
No |
Degree of protection (IP) |
3 |