Product name
Eaton Moeller series NZM molded case circuit breaker thermo-magnetic
Product Length/Depth
166 millimetre
Product height
275 millimetre
Product width
140 millimetre
Product weight
6.095 kilogram
Certifications
IEC/EN 60947
IEC
Product Type
Molded case circuit breaker
Product Sub Type
Thermo-magnetic
Application
Use in unearthed supply systems at 690 V
Circuit breaker frame type
NZM3
Number of poles
Three-pole
Release system
Thermomagnetic 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: 320 A
Terminal capacity hint: Up to 240 mm² can be connected depending on the cable manufacturer.
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
Rated short-time withstand current (t = 0.3 s)
3.3 kA
Rated short-time withstand current (t = 1 s)
3.3 kA
Instantaneous current setting (Ii) - min
1920 A
Instantaneous current setting (Ii) - max
3200 A
Overload current setting (Ir) - min
250 A
Overload current setting (Ir) - max
320 A
Short delay current setting (Isd) - min
0 A
Short delay current setting (Isd) - max
0 A
Short-circuit release non-delayed setting - min
1920 A
Short-circuit release non-delayed setting - max
3200 A
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
85 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
35 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz
13 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 500 V DC
30 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 750 V DC
30 kA
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
187 kA
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
105 kA
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
74 kA
Rated short-circuit making capacity Icm at 525 V, 50/60 Hz
53 kA
Rated short-circuit making capacity Icm at 690 V, 50/60 Hz
40 kA
Short-circuit total breaktime
< 10 ms
Electrical connection type of main circuit
Screw connection
Isolation
300 V AC (between the auxiliary contacts)
500 V AC (between auxiliary contacts and main contacts)
Number of operations per hour - max
60
Utilization category
A (IEC/EN 60947-2)
Lifespan, electrical
2000 operations at 690 V AC-3
2000 operations at 500 V DC-3
3000 operations at 690 V AC-1
5000 operations at 750 V DC-1
5000 operations at 415 V AC-1
2000 operations at 415 V AC-3
5000 operations at 400 V AC-1
5000 operations at 500 V DC-1
2000 operations at 750 V DC-3
2000 operations at 400 V AC-3
Direction of incoming supply
As required
Technical Data - Mechanical
Mounting Method
Fixed
Built-in device fixed built-in technique
Degree of protection
IP20
IP20 (basic degree of protection, in the operating controls area)
Degree of protection (IP), front side
IP66 (with door coupling rotary handle)
IP40 (with insulating surround)
Degree of protection (terminations)
IP00 (terminations, phase isolator and strip terminal)
IP10 (tunnel terminal)
Protection against direct contact
Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110
Shock resistance
20 g (half-sinusoidal shock 20 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, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
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: 320 A
Terminal capacity hint: Up to 240 mm² can be connected depending on the cable manufacturer.
Lifespan, mechanical
15000 operations
Technical Data - Mechanical - Terminals
Standard terminals
Screw terminal
Optional terminals
Box terminal. Connection on rear. Tunnel terminal
Terminal capacity (control cable)
0.75 mm² - 2.5 mm² (1x)
0.75 mm² - 1.5 mm² (2x)
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
50 mm² - 240 mm² (1x) at 2-hole tunnel terminal
50 mm² - 240 mm² (2x) at 2-hole tunnel terminal
Terminal capacity (copper busbar)
Max. 30 mm x 10 mm + 30 mm x 5 mm direct at switch rear-side connection
Max. 10 mm x 50 mm (2x) at rear-side width extension
Min. 20 mm x 5 mm direct at switch rear-side connection
M10 at rear-side screw connection
Terminal capacity (copper solid conductor/cable)
16 mm² (2x) at box terminal
16 mm² (1x) at tunnel terminal
16 mm² (2x) direct at switch rear-side connection
16 mm² (1x) direct at switch rear-side connection
300 mm² (2x) at rear-side width extension
Terminal capacity (copper stranded conductor/cable)
25 mm² - 120 mm² (2x) at box terminal
25 mm² - 240 mm² (2x) direct at switch rear-side connection
16 mm² - 185 mm² (1x) at 1-hole tunnel terminal
25 mm² - 240 mm² (1x) direct at switch rear-side connection
35 mm² - 240 mm² (1x) at box terminal
Terminal capacity (copper strip)
Max. 10 segments of 24 mm x 1 mm + 5 segments of 24 mm x 1 mm
Min. 6 segments of 16 mm x 0.8 mm at box terminal
10 segments of 50 mm x 1 mm (2x) at rear-side width extension
Max. 10 segments of 32 mm x 1 mm + 5 segments of 32 mm x 1 mm at rear-side connection (punched)
Max. 8 segments of 24 mm x 1 mm (2x) at box terminal
Min. 6 segments of 16 mm x 0.8 mm at rear-side connection (punched)
Design verification as per IEC/EN 61439 - technical data
Rated operational current for specified heat dissipation (In)
320 A
Equipment heat dissipation, current-dependent
78.64 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
