Product name
Eaton Moeller series NZM molded case circuit breaker thermo-magnetic
Part no.
NZMB2-A250-KCU-NA
Product Length/Depth
184 millimetre
Product height
149 millimetre
Product width
105 millimetre
Product weight
2.652 kilogram
Certifications
CSA certified
UL (File No. E31593)
UL489
Specially designed for North America
CSA-C22.2 No. 5-09
CSA (Class No. 1432-01)
IEC60947-2
CE marking
CSA (File No. 22086)
DIVQ
UL listed
Product Type
Molded case circuit breaker
Product Sub Type
Thermo-magnetic
Application
Feeder circuits, branch circuits
Number of poles
Three-pole
Features
Protection unit
Motor drive optional
Technical Data - Electrical
Voltage rating
440 V - 440 V
Rated operating voltage Ue (UL) - max
600Y/347 V, 480 V
Instantaneous current setting (Ii) - min
200 A
Instantaneous current setting (Ii) - max
250 A
Overload current setting (Ir) - min
200 A
Overload current setting (Ir) - max
250 A
Short delay current setting (Isd) - min
0 A
Short delay current setting (Isd) - max
0 A
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
25 kA
Electrical connection type of main circuit
Other
Technical Data - Mechanical
Mounting Method
DIN rail (top hat rail) mounting optional
Built-in device fixed built-in technique
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
Design verification as per IEC/EN 61439 - technical data
Equipment heat dissipation, current-dependent
58.13 W
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
Current limiting circuit breaker