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192586
Model code: NZMN3-PX250-NA

Eaton Moeller series NZMN3 PXR25 circuit breaker, 250 A, 3-pole, Screw terminal, UL/CSA

Product specifications
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General specifications

Product Name
Eaton Moeller series NZM molded case circuit breaker electronic
Catalog Number
192586
EAN
4015081933143
Product Length/Depth
166 mm
Product Height
297 mm
Product Width
140 mm
Product Weight
6.34 kg
Compliances
RoHS conform
Certifications
CSA certified
CSA (File No. 22086)
UL listed
CSA (Class No. 1432-01)
CSA-C22.2 No. 5-09
CE marking
UL/CSA
UL (Category Control Number DIVQ)
UL 489
IEC/EN 60947
Specially designed for North America
IEC 60947-2
IEC
UL (File No. E31593)
Model Code
NZMN3-PX250-NA

Product specifications

Amperage Rating
250 A
Voltage rating
690 V - 690 V
Circuit breaker frame type
NZM3
Features
Protection unit
Motor drive optional
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.
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.
Pollution degree
3
Lifespan, mechanical
15000 operations
Utilization category
A (IEC/EN 60947-2)
Mounting Method
Fixed
Built-in device fixed built-in technique
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Equipment heat dissipation, current-dependent
18.75 W
Isolation
500 V AC (between auxiliary contacts and main contacts)
300 V AC (between the auxiliary contacts)
Ambient operating temperature - max
70 °C
Ambient operating temperature - min
-25 °C
Ambient storage temperature - max
70 °C
Ambient storage temperature - min
40 °C
Number of auxiliary contacts (change-over contacts)
0
Number of auxiliary contacts (normally closed contacts)
0
Number of auxiliary contacts (normally open contacts)
0
Protection against direct contact
Finger and back-of-hand proof to DIN EN 50274/VDE 0106 part 110
Degree of protection
IP20 (basic degree of protection, in the operating controls area)
IP20
Direction of incoming supply
As required
Electrical connection type of main circuit
Screw connection
Overvoltage category
III
Rated operational current
630 A (380/400 V AC-1, making and breaking capacity)
630 A (690 V AC-1, making and breaking capacity)
450 A (660-690 V AC-3, making and breaking capacity)
500 A (415 V AC-1, making and breaking capacity)
Degree of protection (IP), front side
IP40 (with insulating surround)
IP66 (with door coupling rotary handle)
Degree of protection (terminations)
IP00 (terminations, phase isolator and strip terminal)
IP10 (tunnel terminal)
Number of poles
Three-pole
Lifespan, electrical
2000 operations at 690 V AC-3
2000 operations at 400 V AC-3
2000 operations at 415 V AC-3
5000 operations at 400 V AC-1
3000 operations at 690 V AC-1
Functions
Systems, cable, selectivity and generator protection
Type
  • 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.
Special features
Circuit breaker
Application
  • Branch circuits, feeder circuits
  • Use in unearthed supply systems at 690 V
Shock resistance
20 g (half-sinusoidal shock 20 ms)
Position of connection for main current circuit
Front side
Rated operational current for specified heat dissipation (In)
250 A
Release system
Electronic release
Short-circuit total breaktime
< 10 ms
Rated short-time withstand current (t = 0.3 s)
3.3 kA
Rated short-time withstand current (t = 1 s)
3.3 kA
Short-circuit release delayed setting - max
2500 A
Short-circuit release delayed setting - min
200 A
Short-circuit release non-delayed setting - max
4500 A
Short-circuit release non-delayed setting - min
500 A
Terminal capacity (copper busbar)
M10 at rear-side screw connection
Handle type
Rocker lever
Short delay current setting (Isd) - max
2500 A
Short delay current setting (Isd) - min
500 A
Instantaneous current setting (Ii) - max
18 A
Instantaneous current setting (Ii) - min
2 A
Number of operations per hour - max
60
Overload current setting (Ir) - max
250 A
Overload current setting (Ir) - min
100 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 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
Standard terminals
Screw terminal
Rated operating voltage Ue (UL) - max
600 V
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
187 kA
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Rated impulse withstand voltage (Uimp) at main contacts
8000 V
Rated insulation voltage (Ui)
690 V AC

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