Trade Price
£1,898.96
Per
1
Unit
EACH
Pack Quantity
1
Eaton Moeller series NZM - Molded Case Circuit Breaker. Circuit-breaker, 3p, 250A, N3-AE250-NA
Product Length/Depth
166 mm
Product Height
297 mm
Product Width
140 mm
Product Weight
6.34 kg
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Compliances
RoHS conform
Certifications
IEC/EN 60947
CE marking
CSA (Class No. 1432-01)
CSA-C22.2 No. 5-09
Specially designed for North America
CSA (File No. 22086)
UL listed
UL/CSA
UL (Category Control Number DIVQ)
CSA certified
IEC 60947-2
UL 489
IEC
UL (File No. E31593)
Rated operational current for specified heat dissipation (In)
250 A
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 690 V, 50/60 Hz
5 kA
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
Mounting Method
Fixed
Built-in device fixed built-in technique
Amperage Rating
250 A
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
Terminal capacity (copper strip)
10 segments of 50 mm x 1 mm (2x) at rear-side width extension
Min. 6 segments of 16 mm x 0.8 mm at box terminal
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)
Max. 10 segments of 32 mm x 1 mm + 5 segments of 32 mm x 1 mm at rear-side connection (punched)
Max. 10 segments of 24 mm x 1 mm + 5 segments of 24 mm x 1 mm
Handle type
Rocker lever
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
Ambient storage temperature - min
40 °C
Protection against direct contact
Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110
Terminal capacity (copper busbar)
Min. 20 mm x 5 mm direct at switch rear-side connection
Max. 10 mm x 50 mm (2x) at rear-side width extension
M10 at rear-side screw connection
10.8 Connections for external conductors
Is the panel builder's responsibility.
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: 250 A
Switches conform to UL/CSA as well as the IEC regulations. IEC switching performance values are contained on the rating plate.
Adjustable overload releases Ir
R.m.s. value measurement and “thermal memory”
Ambient operating temperature - max
70 °C
Position of connection for main current circuit
Front side
Rated insulation voltage (Ui)
1000 V AC
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Terminal capacity (copper stranded conductor/cable)
4 mm² - 350 mm² (1x) at tunnel terminal
2 mm² - 500 mm² (1x) at box terminal
4 mm² - 350 mm² (1x) direct at switch rear-side connection
350 mm² (2x) direct at switch rear-side connection
Features
Protection unit
Motor drive optional
Low-voltage HBC fuse - max
400 A gG/gL
Lifespan, electrical
2000 operations at 400 V AC-3
2000 operations at 415 V AC-3
3000 operations at 690 V AC-1
5000 operations at 400 V AC-1
2000 operations at 690 V AC-3
Electrical connection type of main circuit
Screw connection
Short-circuit total breaktime
< 10 ms
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
50 kA
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
Utilization category
A (IEC/EN 60947-2)
Number of poles
Three-pole
Ambient operating temperature - min
-25 °C
10.6 Incorporation of switching devices and components
Does not apply, since the entire switchgear needs to be evaluated.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
Terminal capacity (control cable)
14 mm² - 18 mm² (1x)
16 mm² - 18 mm² (2x)
Equipment heat dissipation, current-dependent
18.75 W
Class
Distribution circuit protection
Instantaneous current setting (Ii) - min
500 A
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
Rated operational current
630 A (380/400 V AC-1, making and breaking capacity)
250 A (660-690 V AC-3, making and breaking capacity)
250 A (690 V AC-1, making and breaking capacity)
500 A (415 V AC-1, making and breaking capacity)
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
85 kA
Application
Branch circuits, feeder circuits
Use in unearthed supply systems at 690 V
10.3 Degree of protection of assemblies
Does not apply, since the entire switchgear needs to be evaluated.
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
187 kA
Frame
NZM3
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
35 kA
Degree of protection (IP), front side
IP40 (with insulating surround)
IP66 (with door coupling rotary handle)
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
Instantaneous current setting (Ii) - max
2750 A
Overload current setting (Ir) - min
125 A
Short delay current setting (Isd) - min
0 A
Number of auxiliary contacts (normally closed contacts)
0
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.
Lifespan, mechanical
15000 operations
Overload current setting (Ir) - max
250 A
Voltage rating
690 V - 690 V
Terminal capacity (copper solid conductor/cable)
6 mm² (1x) at tunnel terminal
500 mm² (2x) at rear-side width extension
Degree of protection (terminations)
IP10 (tunnel terminal)
IP00 (terminations, phase isolator and strip terminal)
Terminal capacity (aluminum stranded conductor/cable)
Max. 500 mm² (2x) at 2-hole tunnel terminal
Max. 500 mm² (1x) at 2-hole tunnel terminal
Rated operating voltage Ue (UL) - max
600 V
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
Short-circuit release non-delayed setting - min
500 A
Degree of protection
IP20
IP20 (basic degree of protection, in the operating controls area)
Overvoltage category
III
Rated short-time withstand current (t = 1 s)
3.3 kA
Short delay current setting (Isd) - max
0 A
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Number of auxiliary contacts (change-over contacts)
0
Rated short-time withstand current (t = 0.3 s)
3.3 kA
Ambient storage temperature - max
70 °C
Release system
Electronic release
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 525 V, 50/60 Hz
13 kA
Pollution degree
3
10.7 Internal electrical circuits and connections
Is the panel builder's responsibility.
Connection
Front screw
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Functions
Current limiting circuit breaker
System and cable protection
Short-circuit release non-delayed setting - max
2750 A
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
105 kA
Standard terminals
Screw terminal
Type
Circuit breaker
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.7 Inscriptions
Meets the product standard's requirements.
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
74 kA
Number of auxiliary contacts (normally open contacts)
0
Isolation
300 V AC (between the auxiliary contacts)
500 V AC (between auxiliary contacts and main contacts)
Number of operations per hour - max
60
Circuit breaker frame type
NZM3
Direction of incoming supply
As required
Shock resistance
20 g (half-sinusoidal shock 20 ms)
Terminal capacity (aluminum solid conductor/cable)
16 mm² (1x) at tunnel terminal
Datasheet