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IZMX40N4-A12F 149887 RES8134B22-NMNN2MN1X EATON ELECTRIC Circuit-breaker, 4p, 1250 A, fixed
IZMX40N4-A12F
149887
RES8134B22-NMNN2MN1X
EATON - MOELLER
1 Pcs.
Circuit-breaker, 4p, 1250 A, fixed
Circuit-breaker IZMX40 ( Air circuit-breakers/switch-disconnectors), 4 pole, Current Range: Up to 4000 A, Rated current = rated uninterrupted current( In = Iu): 1250 A, Rated ultimate short-circuit breaking capacity up to 440V/690V 42/42( Icu): 85 kA, Rated service short-circuit breaking capacity up to 440V/690V 42/42( Ics): 85 kA, Overload release, min.( Ir): 625 A, Overload release, max.( Ir): 1250 A, Installation type: Fixed, Standard/Approval: IEC, Protective function: System protection
Automation > Power circuit-breaker for trafo/generator/installation protection
Product condition, packaging, certifications and applicable manufacturer warranty terms are confirmed with the quotation.
More info
▲Circuit-breaker, 4p, 1250A, fixed
Circuit-breaker IZMX40 ( Air circuit-breakers/switch-disconnectors), 4 pole, Current Range: Up to 4000 A, Rated current = rated uninterrupted current( In = Iu): 1250 A, Rated ultimate short-circuit breaking capacity up to 440V/690V 42/42( Icu): 85 kA, Rated service short-circuit breaking capacity up to 440V/690V 42/42( Ics): 85 kA, Overload release, min.( Ir): 625 A, Overload release, max.( Ir): 1250 A, Installation type: Fixed, Standard/Approval: IEC, Protective function: System protection
Delivery program
Product range
Air circuit-breakers/switch-disconnectors
Product range
Open circuit-breakers
Current Range
Up to 4000 A
Protective function
System protection
Installation type
Fixed
Construction size
IZMX40
Release system
Electronic release
Standard/Approval
IEC
Number of poles
4 pole
Degree of Protection
IP20, IP55 with protective cover, IP41 door sealing frame
optionally fittable by user with comprehensive accessories
Rated current = rated uninterrupted current [In= Iu]
1250 A
Rated ultimate short-circuit breaking capacity up to 440V/690V 42/42 [Icu]
85 kA
Rated service short-circuit breaking capacity up to 440V/690V 42/42 [Ics]
85 kA
Overload release, min. [Ir]
625 A
Overload release, max. [Ir]
1250 A
Non-delayed
[Ii= Inx …]
[Ii= Inx …]2 - 12
Notes
Main terminals must be separately ordered.
Technical data
General
Standards
IEC/EN 60947
Ambient temperatureStorage [ϑ]
-40 - +70 °C
Ambient temperatureOperating (open)
-25 - +70 °C
Mounting position
Utilization category
B
Degree of Protection
IP20, IP55 with protective cover, IP41 door sealing frame
Direction of incoming supply
as required
Main conducting paths
Rated current = rated uninterrupted current [In= Iu]
1250 A
Rated uninterrupted current at 50 °C [Iu]
1250 A
Rated uninterrupted current at 60 °C [Iu]
1250 A
Rated uninterrupted current at 70 °C [Iu]
1250 A
Rated impulse withstand voltage [Uimp]
12000 V AC
Rated operational voltage [Ue]
690 V AC
Use in IT electrical power networks up to U = 440 V [IIT]
57.6 kA
Overvoltage category/pollution degree
III/3
Rated insulation voltage [Ui]
1000 V
Switching capacity
Rated short-circuit making capacity [Icm]up to 440 V 50/60 Hz [Icm]
187 kA
Rated short-circuit making capacity [Icm]up to 690 V 50/60 Hz [Icm]
166 kA
Rated short-time withstand current 50/60 Hzt = 1 s [Icw]
85 kA
Rated short-time withstand current 50/60 Hzt = 3 s [Icw]
66 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcuO-t-COup to 240 V 50/60 Hz [Icu]
85 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcuO-t-COup to 440 V 50/60 Hz [Icu]
85 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcuO-t-COup to 690 V 50/60 Hz [Icu]
75 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcsO-t-CO-t-COup to 240 V 50/60 Hz [Ics]
85 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcsO-t-CO-t-COup to 440 V 50/60 Hz [Ics]
85 kA
Rated short-circuit breaking capacity Icn[Icn]IEC/EN 60947 operating sequence IcsO-t-CO-t-COup to 690 V 50/60 Hz [Ics]
75 kA
Operating timesClosing delay via spring release
35 ms
Operating timesTotal opening delay via shunt release
22 ms
Operating timesTotal opening delay via undervoltage release
37 ms
Operating timesTotal opening delay on non-delayed short-circuit release (up to complete arc quenching)
45 ms
Maximum operating frequency [Operations/h]
60
Heat dissipation at rated current InFixed mounting
60 W
Weight
Fixed mounting3-pole
43 kg
Fixed mounting4-pole
56 kg
Terminal capacities
Copper barFixed mountingBlack
1 x 60 x 10 mm
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.
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.
Design verification as per IEC/EN 61439
Technical data for design verification
Rated operational current for specified heat dissipation [In]
1250 A
Equipment heat dissipation, current-dependent [Pvid]
60 W
Operating ambient temperature min.
-25 °C
Operating ambient temperature max.
+70 °C
IEC/EN 61439 design verification
10.2 Strength of materials and parts10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts10.2.7 Inscriptions
Meets the product standard's requirements.
10.3 Degree of protection of ASSEMBLIES
Does not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
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
Is the panel builder's responsibility.
10.8 Connections for external conductors
Is the panel builder's responsibility.
10.9 Insulation properties10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9 Insulation properties10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9 Insulation properties10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
Technical data ETIM 7.0
Low-voltage industrial components (EG000017) / Power circuit-breaker for trafo/generator/installation protection (EC000228)
Electric engineering, automation, process control engineering / Low-voltage switch technology / Circuit breaker (LV < 1 kV) / Circuit breaker for power transformer, generator and system protection ([email protected] [AJZ716013])
Rated permanent current Iu
1250 A
Rated voltage
690 - 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz
85 kA
Overload release current setting
625 - 1250 A
Adjustment range short-term delayed short-circuit release
0 - 0 A
Adjustment range undelayed short-circuit release
2500 - 15000 A
Integrated earth fault protection
No
Type of electrical connection of main circuit
Rail connection
Device construction
Built-in device fixed built-in technique
Suitable for DIN rail (top hat rail) mounting
No
DIN rail (top hat rail) mounting optional
No
Number of auxiliary contacts as normally closed contact
0
Number of auxiliary contacts as normally open contact
0
Number of auxiliary contacts as change-over contact
2
With switched-off indicator
Yes
With under voltage release
No
Number of poles
4
Position of connection for main current circuit
Back side
Type of control element
Push button
Complete device with protection unit
Yes
Motor drive integrated
No
Motor drive optional
Yes
Degree of protection (IP)
IP20
| Feature Name | Feature Value |
|---|---|
| Rated permanent current Iu (EF001389) | 1250 A |
| Rated voltage (EF003977) | 690 V |
| Rated short-circuit breaking capacity Icu at 400 V, 50 Hz (EF007048) | 85 kA |
| Overload release current setting (EF002336) | 625 A |
| Adjustment range short-term delayed short-circuit release (EF007129) | 0 A |
| Adjustment range undelayed short-circuit release (EF007131) | 2500 A |
| Device construction (EF008240) | Built-in device fixed built-in technique |
| Integrated earth fault protection (EF007296) | No |
| Type of electrical connection of main circuit (EF006819) | Rail connection |
| Suitable for DIN rail (top hat rail) mounting (EF007250) | No |
| DIN rail (top hat rail) mounting optional (EF008904) | No |
| Number of auxiliary contacts as normally closed contact (EF001377) | 0 |
| Number of auxiliary contacts as normally open contact (EF001376) | 0 |
| Number of auxiliary contacts as change-over contact (EF003531) | 2 |
| With switched-off indicator (EF007006) | Yes |
| With integrated under voltage release (EF001390) | No |
| Number of poles (EF001391) | 4 |
| Position of connection for main current circuit (EF006671) | Back |
| Type of control element (EF006976) | Push button |
| Complete device with protection unit (EF008906) | Yes |
| Motor drive integrated (EF006697) | No |
| Motor drive optional (EF007386) | Yes |
| Degree of protection (IP) (EF005474) | IP20 |