Product name
Eaton Moeller series NZM molded case circuit breaker electronic
Product Length/Depth
401 millimetre
Product height
207 millimetre
Product width
280 millimetre
Product weight
27 kilogram
Certifications
IEC/EN 60947
IEC
Product Type
Molded case circuit breaker
Product Sub Type
Electronic
Application
Use in unearthed supply systems at 525 V
Circuit breaker frame type
NZM4
Number of poles
Four-pole
Release system
Electronic release
Features
Motor drive optional
Protection unit
Special features
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit breaker (Rated short-circuit breaking capacity Icn)
Rated current = rated uninterrupted current: 1250 A
Set value in neutral conductor is synchronous with set value Ir of main pole.
R.m.s. value measurement and “thermal memory”
Technical Data - Electrical
Voltage rating
690 V - 690 V
Rated insulation voltage (Ui)
1000 V AC
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Current rating of neutral conductor
200% of phase conductor
Rated short-time withstand current (t = 0.3 s)
19.2 kA
Rated short-time withstand current (t = 1 s)
19.2 kA
Instantaneous current setting (Ii) - min
2500 A
Instantaneous current setting (Ii) - max
15000 A
Overload current setting (Ir)
630 A - 1250 A
Overload current setting (Ir) - min
630 A
Overload current setting (Ir) - max
1250 A
Short delay current setting (Isd) - min
0 A
Short delay current setting (Isd) - max
0 A
Short-circuit release non-delayed setting - min
2500 A
Short-circuit release non-delayed setting - max
15000 A
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
63 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
50 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
50 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz
50 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 690 V, 50/60 Hz
37 kA
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
275 kA
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
187 kA
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
187 kA
Rated short-circuit making capacity Icm at 525 V, 50/60 Hz
143 kA
Rated short-circuit making capacity Icm at 690 V, 50/60 Hz
100 kA
Short-circuit total breaktime
< 25 ms (≦ 415 V); < 35 ms (> 415 V)
Electrical connection type of main circuit
Screw connection
Isolation
500 V AC (between auxiliary contacts and main contacts)
300 V AC (between the auxiliary contacts)
Number of operations per hour - max
60
Utilization category
A (IEC/EN 60947-2)
Lifespan, electrical
2000 operations at 400 V AC-3
1000 operations at 690 V AC-3
3000 operations at 415 V AC-1
2000 operations at 415 V AC-3
2000 operations at 690 V AC-1
3000 operations at 400 V AC-1
Direction of incoming supply
As required
Technical Data - Mechanical
Mounting Method
Built-in device fixed built-in technique
Fixed
Degree of protection
IP20 (basic degree of protection, in the operating controls area)
IP20
Degree of protection (IP), front side
IP66 (with door coupling rotary handle)
IP40 (with insulating surround)
Degree of protection (terminations)
IP10 (tunnel terminal)
IP00 (terminations, phase isolator and strip terminal)
Protection against direct contact
Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110
Shock resistance
15 g (half-sinusoidal shock 11 ms)
Number of auxiliary contacts (change-over contacts)
0
Number of auxiliary contacts (normally closed contacts)
0
Number of auxiliary contacts (normally open contacts)
0
Position of connection for main current circuit
Front side
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Special features
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit breaker (Rated short-circuit breaking capacity Icn)
Rated current = rated uninterrupted current: 1250 A
Set value in neutral conductor is synchronous with set value Ir of main pole.
R.m.s. value measurement and “thermal memory”
Lifespan, mechanical
10000 operations
Technical Data - Mechanical - Terminals
Standard terminals
Screw terminal
Optional terminals
Connection on rear. Strip terminal. Tunnel terminal
Terminal capacity (control cable)
0.75 mm² - 1.5 mm² (2x)
0.75 mm² - 2.5 mm² (1x)
Terminal capacity (aluminum solid conductor/cable)
70 mm² - 185 mm² (2x) at rear-side 1-hole module plate
185 mm² - 240 mm² (1x) at rear-side 1-hole module plate
50 mm² (4x) at rear-side 2-hole module plate
70 mm² - 240 mm² (6x) at rear-side width extension
240 mm² (2x) at rear-side width extension
Terminal capacity (aluminum stranded conductor/cable)
50 mm² - 240 mm² (4x) at 4-hole tunnel terminal
Terminal capacity (copper busbar)
Min. 25 mm x 5 mm direct at switch rear-side connection
Max. 50 mm x 10 mm (2x) direct at switch rear-side connection
Min. 25 mm x 5 mm at rear-side 1-hole module plate
50 mm x 10 mm (2x) at rear-side 2-hole module plate
M10 at rear-side screw connection
Max. 80 mm x 10 mm (2x) at rear-side width extension
Min. 60 mm x 10 mm at rear-side width extension
Max. 50 mm x 10 mm (2x) at rear-side 1-hole module plate
Terminal capacity (copper solid conductor/cable)
35 mm² - 185 mm² (4x) at rear-side 2-hole module plate
95 mm² - 185 mm² (2x) at rear-side 2-hole module plate
95 mm² - 240 mm² (6x) at rear-side width extension
50 mm² - 240 mm² (4x) at 4-hole tunnel terminal
300 mm² (4x) at rear-side width extension
120 mm² - 300 mm² (1x) at rear-side 1-hole module plate
95 mm² - 300 mm² (2x) at rear-side 1-hole module plate
Terminal capacity (copper stranded conductor/cable)
120 mm² - 185 mm² (1x) direct at switch rear-side connection
50 mm² - 185 mm² (4x) direct at switch rear-side connection
Terminal capacity (copper strip)
Max. 10 segments of 32 mm x 1 mm (2x) at flat conductor terminal
Min. 6 segments of 16 mm x 0.8 mm at flat conductor terminal
Min. 5 segments of 25 mm x 1 mm at rear-side connection (punched)
10 segments of 80 mm x 1 mm (2x) at rear-side width extension
10 segments of 50 mm x 1 mm (2x) at 1-hole module plate
Max. 10 segments of 50 mm x 1 mm (2x) at rear-side connection (punched)
Design verification as per IEC/EN 61439 - technical data
Rated operational current for specified heat dissipation (In)
1250 A
Equipment heat dissipation, current-dependent
173.44 W
Ambient operating temperature - min
-25 °C
Ambient operating temperature - max
70 °C
Ambient storage temperature - min
40 °C
Ambient storage temperature - max
70 °C
Design verification as per IEC/EN 61439
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2.3.3 Resist. of insul. mat. to abnormal heat/fire by internal elect. effects
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2.7 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.
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9.4 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.
Functions
System and cable protection
