General specifications
Product name
Eaton Moeller series NZM switch-disconnector
Part no.
N2-4-250
EAN
4015082660161
Product Length/Depth
142 millimetre
Product height
185 millimetre
Product width
140 millimetre
Product weight
2.442 kilogram
Compliances
RoHS conform
Certifications
IEC
IEC/EN 60947
Product Tradename
NZM
Product Type
Switch-disconnector
Product Sub Type
None
Delivery program
Application
Use in unearthed supply systems at 690 V
Type
Switch-disconnector
Circuit breaker frame type
N2
Number of poles
Four-pole
Amperage Rating
250 A
Features
Version as emergency stop installation
Motor drive optional
Version as maintenance-/service switch
Version as main switch
Special features
The rated short-time withstand current for PN2/N2 in conjunction with earth-fault release NZM2-4-XFI...Icw = 1.5 kA
Rated current = rated uninterrupted current: 250 A
Busbar tag shroud to VDE 0160 Part 100.
Isolating characteristics to IEC/EN 60947-3 and VDE 0660.
Main switch characteristics including positive drive to IEC/EN 60204 and VDE 0113.
Technical Data - Electrical
Voltage rating
690 V - 690 V
Rated operating voltage (Ue) at AC - max
690 V
Rated insulation voltage (Ui)
690 V
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Rated conditional short-circuit current (Iq)
0 kA
Rated operational current
250 A (690 V AC-22/23A, making and breaking capacity)
250 A (415 V AC-22/23A, making and breaking capacity)
Rated permanent current at AC-21, 400 V
0 A
Rated permanent current at AC-23, 400 V
0 A
Rated conditional short-circuit current with back-up fuse
100 kA at 400/415 V
PN2(N2)-160…250: 250 AgGgL
80 kA at 690 V
Rated conditional short-circuit current with downstream fuse
80 kA at 690 V
100 kA at 400/415 V
PN2(N2)-160…250: 250 AgGgL
Rated short-time withstand current (Icw)
3.5 kA
Rated short-time withstand current (t = 0.3 s)
3.5 kA
Rated short-time withstand current (t = 1 s)
3.5 kA
Rated operating frequency
50 Hz
Rated short-circuit making capacity Icm at 690 V, 50/60 Hz
5.5 kA
Rated operating power at AC-3, 400 V
0 kW
Rated operating power at AC-23, 400 V
132 kW
Switching power at 400 V
0 kW
Short-circuit protective device fuses - max
250 A gL
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
120
Handle type
Rocker lever
Overvoltage category
III
Pollution degree
3
Lifespan, electrical
7500 operations at 415 V AC-1
6000 operations at 415 V AC-3
6000 operations at 400 V AC-3
5000 operations at 690 V AC-1
4000 operations at 690 V AC-3
7500 operations at 400 V AC-1
Direction of incoming supply
As required
Technical Data - Mechanical
Mounting Method
Ground mounting
Intermediate mounting
Distribution board installation
Fixed
Built-in device fixed built-in technique
Degree of protection
Other
IP20 (basic protection type, in the area of the HMI devices)
Degree of protection (IP), front side
IP66 (with door coupling rotary handle)
IP20
IP40 (with insulating surround)
Degree of protection (terminations)
IP10 (tunnel terminal)
IP00 (terminations, phase isolator and band 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
Number of switches
1
Handle color
Black
Switch positions
I, +, 0
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Special features
The rated short-time withstand current for PN2/N2 in conjunction with earth-fault release NZM2-4-XFI...Icw = 1.5 kA
Rated current = rated uninterrupted current: 250 A
Busbar tag shroud to VDE 0160 Part 100.
Isolating characteristics to IEC/EN 60947-3 and VDE 0660.
Main switch characteristics including positive drive to IEC/EN 60204 and VDE 0113.
Lifespan, mechanical
20000 operations
Technical Data - Mechanical - Terminals
Standard terminals
Screw terminal
Optional terminals
Box terminal. Connection on rear. Tunnel terminal
Terminal capacity (aluminum solid conductor/cable)
16 mm² (1x) at tunnel terminal
10 mm² - 16 mm² (1x) direct at switch rear-side connection
10 mm² - 16 mm² (2x) direct at switch rear-side connection
Terminal capacity (aluminum stranded conductor/cable)
25 mm² - 185 mm² (1x) at 1-hole tunnel terminal
Terminal capacity (copper busbar)
Min. 16 mm x 5 mm direct at switch rear-side connection
Max. 24 mm x 8 mm direct at switch rear-side connection
M8 at rear-side screw connection
Terminal capacity (copper solid conductor/cable)
6 mm² - 16 mm² (2x) direct at switch rear-side connection
6 mm² - 16 mm² (2x) at box terminal
10 mm² - 16 mm² (1x) direct at switch rear-side connection
16 mm² (1x) at tunnel terminal
10 mm² - 16 mm² (1x) at box terminal
Terminal capacity (copper stranded conductor/cable)
25 mm² - 185 mm² (1x) direct at switch rear-side connection
25 mm² - 70 mm² (2x) at box terminal
25 mm² - 70 mm² (2x) direct at switch rear-side connection
25 mm² - 185 mm² (1x) at 1-hole tunnel terminal
25 mm² - 185 mm² (1x) at box terminal
Terminal capacity (copper strip)
Max. 8 segments of 15.5 mm x 0.8 mm (2x) at box terminal
Max. 10 segments of 16 mm x 0.8 mm at box terminal
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Min. 2 segements of 16 mm x 0.8 mm at rear-side connection (punched)
Max. 10 segments of 24 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)
250 A
Equipment heat dissipation, current-dependent
48 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.
Additional information
Functions
Voltage release optional
Interlockable
Disconnectors/main switches

Technical data ETIM 9.0

Low-voltage industrial components (EG000017) / Switch disconnector (low voltage) (EC000216)
Electric engineering, automation, process control engineering / Low-voltage switch technology / Off-load switch, circuit breaker, control switch / Switch disconnector (ecl@ss13-27-37-14-03 [AKF060018])
Version as main switch
Yes
Version as maintenance-/service switch
Yes
Version as safety switch
No
Version as emergency stop installation
Yes
Version as reversing switch
No
Number of switches
1
Max. rated operation voltage Ue AC
690 V
Rated operating voltage
690 - 690 V
Rated permanent current Iu
250 A
Rated permanent current at AC-23, 400 V
0 A
Rated permanent current at AC-21, 400 V
0 A
Rated operation power at AC-3, 400 V
0 kW
Rated short-time withstand current lcw
3.5 kA
Rated operation power at AC-23, 400 V
132 kW
Switching power at 400 V
0 kW
Conditioned rated short-circuit current Iq
0 kA
Number of poles
4
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
0
Motor drive optional
Yes
Motor drive integrated
No
Voltage release optional
Yes
Device construction
Built-in device fixed built-in technique
Suitable for floor mounting
Yes
Suitable for front mounting 4-hole
No
Suitable for front mounting centre
No
Suitable for distribution board installation
Yes
Suitable for intermediate mounting
Yes
Colour control element
Black
Type of control element
Rocker lever
Interlockable
Yes
Type of electrical connection of main circuit
Screw connection
With pre-assembled cabling
No
Degree of protection (IP), front side
IP20
Degree of protection (NEMA)
Other
Width
140 mm
Height
185 mm
Depth
142 mm
Width in number of modular spacings