Product name
Eaton Moeller series NZM - Molded Case Circuit Breaker
Product Length/Depth
401 millimetre
Product height
207 millimetre
Product width
210 millimetre
Product weight
21 kilogram
Certifications
IEC
IEC/EN 60947
Product Type
Molded Case Circuit Breaker
Application
Use in unearthed supply systems at 525 V
Circuit breaker frame type
NZM4
Number of poles
Three-pole
Release system
Electronic release
Special features
IEC/EN 60947-4-1, IEC/EN 60947-2
The circuit-breaker fulfills all requirements for AC-3 switching category.
R.m.s. value measurement and “thermal memory”
Adjustable time delay setting to overcome current peaks tr at 6 x Ir also infinity (without overload releases)
All AC-3 rating data applies to direct switching by the circuit-breaker under normal operating conditions. If, for example, a contactor takes over AC-3 switching under normal operating conditions, the full rated uninterrupted current applies to the circuit-breaker, In = Iu.
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: 1400 A
Fitted with:
Thermal protection
Technical Data - Electrical
Voltage rating
690 V - 690 V
Rated insulation voltage (Ui)
1000 V
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Rated operational current
1066 A (400 V AC-3)
588 A (690 V AC-3)
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
1400 A
Instantaneous current setting (Ii) - max
19600 A
Overload current setting (Ir) - min
700 A
Overload current setting (Ir) - max
1400 A
Short-circuit release non-delayed setting - min
2800 A
Short-circuit release non-delayed setting - max
19600 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
43 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
43 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz
49 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
220 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
105 kA
Rated operating power at AC-3, 230 V
450 kW
Rated operating power at AC-3, 400 V
800 kW
Short-circuit total breaktime
< 25 ms (≦ 415 V); < 35 ms (> 415 V)
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
B (IEC/EN 60947-2)
Lifespan, electrical
2000 operations at 415 V AC-3
1000 operations at 690 V AC-3
3000 operations at 415 V AC-1
2000 operations at 400 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
IP20 (basic degree of protection, in the operating controls area)
Degree of protection (IP), front side
IP40 (with insulating surround)
IP66 (with door coupling rotary handle)
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 VDE 0106 part 100
Shock resistance
15 g (half-sinusoidal shock 11 ms)
Switch off technique
Electronic
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Special features
IEC/EN 60947-4-1, IEC/EN 60947-2
The circuit-breaker fulfills all requirements for AC-3 switching category.
R.m.s. value measurement and “thermal memory”
Adjustable time delay setting to overcome current peaks tr at 6 x Ir also infinity (without overload releases)
All AC-3 rating data applies to direct switching by the circuit-breaker under normal operating conditions. If, for example, a contactor takes over AC-3 switching under normal operating conditions, the full rated uninterrupted current applies to the circuit-breaker, In = Iu.
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: 1400 A
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 stranded conductor/cable)
50 mm² - 240 mm² (4x) at 4-hole tunnel terminal
Terminal capacity (copper busbar)
Max. 50 mm x 10 mm (2x) at rear-side 1-hole module plate
Min. 25 mm x 5 mm at rear-side 1-hole module plate
Max. 80 mm x 10 mm (2x) at rear-side width extension
M10 at rear-side screw connection
Max. 50 mm x 10 mm (2x) direct at switch rear-side connection
50 mm x 10 mm (2x) at rear-side 2-hole module plate
Min. 60 mm x 10 mm at rear-side width extension
Min. 25 mm x 5 mm direct at switch rear-side connection
Terminal capacity (copper solid conductor/cable)
120 mm² - 300 mm² (1x) at rear-side 1-hole module plate
95 mm² - 300 mm² (2x) at rear-side 1-hole module plate
300 mm² (4x) at rear-side width extension
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
35 mm² - 185 mm² (4x) at rear-side 2-hole module plate
Terminal capacity (copper stranded conductor/cable)
50 mm² - 185 mm² (4x) direct at switch rear-side connection
120 mm² - 185 mm² (1x) direct at switch rear-side connection
Terminal capacity (copper strip)
10 segments of 50 mm x 1 mm (2x) at 1-hole module plate
10 segments of 80 mm x 1 mm (2x) at rear-side width extension
Max. 10 segments of 50 mm x 1 mm (2x) at rear-side connection (punched)
Min. 5 segments of 25 mm x 1 mm at rear-side connection (punched)
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
Design verification as per IEC/EN 61439 - technical data
Rated operational current for specified heat dissipation (In)
1400 A
Equipment heat dissipation, current-dependent
217.56 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
Phase failure sensitive
Motor protection