Product name
Eaton Moeller series NZM molded case circuit breaker electronic
Product Length/Depth
149 millimetre
Product height
184 millimetre
Product width
105 millimetre
Product weight
2.46 kilogram
Product Type
Molded case circuit breaker
Product Sub Type
Electronic
Circuit breaker frame type
NZM2
Number of poles
Three-pole
Release system
Electronic release
Features
Motor drive optional
Protection unit
Special features
Lifespan, mechanical: of which max. 50 % trip by shunt/undervoltage release
R.m.s. value measurement and “thermal memory”
adjustable time delay setting to overcome current peaks tr: 2 – 20 s at 6 x Ir also infinity (without overload releases)
Adjustable delay time tsd: Steps: 0, 20, 60, 100, 200, 300, 500, 750, 1000 ms
i²t constant function: fixed OFF
NZM...S1 terminal type: NZM...XKSA cover required
Rated current = rated uninterrupted current: 250 A
Terminal capacity hint: Up to 240 mm² can be connected depending on the cable manufacturer.
Technical Data - Electrical
Voltage rating
1000 V - 1000 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
Rated short-time withstand current (t = 0.3 s)
1.9 kA
Rated short-time withstand current (t = 1 s)
1.9 kA
Instantaneous current setting (Ii) - min
3000 A
Instantaneous current setting (Ii) - max
3000 A
Overload current setting (Ir) - min
125 A
Overload current setting (Ir) - max
250 A
Short delay current setting (Isd) - min
250 A
Short delay current setting (Isd) - max
2500 A
Short-circuit release delayed setting - min
250 A
Short-circuit release delayed setting - max
2500 A
Short-circuit release non-delayed setting - min
3000 A
Short-circuit release non-delayed setting - max
3000 A
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
150 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
150 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
130 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz
37.5 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 690 V, 50/60 Hz
5 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 1000 V, 50/60 Hz
3 kA
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
330 kA
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
330 kA
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
286 kA
Rated short-circuit making capacity Icm at 525 V, 50/60 Hz
105 kA
Rated short-circuit making capacity Icm at 690 V, 50/60 Hz
40 kA
Rated short-circuit making capacity Icm at 1000 V, 50/60 Hz
17 kA
Electrical connection type of main circuit
Screw connection
Number of operations per hour - max
120
Lifespan, electrical
3000 operations at 1000 V AC-1
Technical Data - Mechanical
Mounting Method
Fixed
DIN rail (top hat rail) mounting optional
Built-in device fixed built-in technique
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
Special features
Lifespan, mechanical: of which max. 50 % trip by shunt/undervoltage release
R.m.s. value measurement and “thermal memory”
adjustable time delay setting to overcome current peaks tr: 2 – 20 s at 6 x Ir also infinity (without overload releases)
Adjustable delay time tsd: Steps: 0, 20, 60, 100, 200, 300, 500, 750, 1000 ms
i²t constant function: fixed OFF
NZM...S1 terminal type: NZM...XKSA cover required
Rated current = rated uninterrupted current: 250 A
Terminal capacity hint: Up to 240 mm² can be connected depending on the cable manufacturer.
Lifespan, mechanical
20000 operations
Technical Data - Mechanical - Terminals
Standard terminals
Screw 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)
16 mm² (1x) at tunnel terminal
Terminal capacity (aluminum stranded conductor/cable)
25 mm² - 185 mm² (1x) at tunnel terminal
Terminal capacity (copper busbar)
Max. 24 mm x 8 mm direct at switch rear-side connection
M8 at rear-side screw connection
Min. 16 mm x 5 mm direct at switch rear-side connection
Terminal capacity (copper solid conductor/cable)
10 mm² - 16 mm² (1x) direct at switch rear-side connection
10 mm² - 16 mm² (2x) direct at switch rear-side connection
16 mm² (1x) at tunnel terminal
10 mm² - 16 mm² (1x) at box terminal
6 mm² - 16 mm² (2x) at box terminal
Terminal capacity (copper stranded conductor/cable)
25 mm² - 70 mm² (2x) at box terminal
25 mm² - 185 mm² (1x) at box terminal
25 mm² - 185 mm² (1x) at tunnel terminal
25 mm² - 50 mm² (2x) direct at switch rear-side connection
Terminal capacity (copper strip)
Max. 8 segments of 24 mm x 1 mm (2x) at box terminal
Max. 10 segments of 24 mm x 0.8 mm at rear-side connection (punched)
Max. 10 segments of 16 mm x 0.8 mm at box terminal
Min. 2 segements of 16 mm x 0.8 mm at rear-side connection (punched)
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Design verification as per IEC/EN 61439 - technical data
Rated operational current for specified heat dissipation (In)
250 A
Equipment heat dissipation, current-dependent
51.56 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
Systems, cable, selectivity and generator protection