Molded Case Circuit Breaker. Circuit-breaker, 3p, 320A, busbar terminal for CU N, frame 3, A320

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Wyłącznik NZMN3-A320

Program
Range
     Circuit-breaker
Protective function
     System and cable protection
Photovoltaic applications
Standard/Approval
     IEC
Installation type
     Fixed mounted
Release system
     Thermomagnetic release
Construction size
     NZM3
Number of conductors
     3 pole
Standard equipment
     Screw connection
Switching capacity
      
400/415 V 50/60 Hz
 Icu kA 50
Rated current = rated uninterrupted current
      
Rated current = rated uninterrupted current
 In= Iu A 320
Setting range
      
Overload trip
      
Overload releases
 Ir A 250- 320
Short-circuit releases
      
Non-delayed
 Ii= Inx …   6 - 10
 
General
Standards
     IEC/EN 60947
Protection against direct contact
     Finger and back of hand proof to VDE 0106 Part 100
Climatic proofing
     Damp heat, constant to IEC 60068-2-78
Damp heat, cyclic to IEC 60068-2-30
Ambient temperature
   °C  
Ambient temperature, storage
   °C -40- +80
Operation
   °C -25… +70
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27
   g 20 (half-sinusoidal shock 20 ms)
Safe isolation to VDE 0106 Part 101 and Part 101/A1
      
Between auxiliary contacts and main contacts
   V AC 500
between the auxiliary contacts
   V AC 300
Weight
   kg 6.34
Mounting position
      
Mounting position
    
Vertical and 90° in all directions
With residual-current release XFI:
- NZM1, N1, NZM2, N2: vertical and 90° in all directions
with plug-in adapter elements
- NZM1, N1, NZM2, N2: vertical, 90° right/left
with withdrawable unit:
- NZM3, N3: vertical, 90 ° left
- NZM4, N4: vertical
with remote operator:
- NZM2, N(S)2, NZM3, N(S)3, NZM4, N(S)4: vertical and 90° in all directions

 
Direction of incoming supply
     As required
Degree of protection
      
Device
     In the operating controls area: IP20 (basic degree of protection)
Enclosures
     With insulating surround: IP40, with door coupling rotary handle: IP66
Terminations
     Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)
     Weight
Temperature dependency, Derating
Effective power loss
Circuit-breakers
Rated current = rated uninterrupted current
 In= Iu A 320
Rated surge voltage invariability
 Uimp    
Main contacts
   V 8000
Auxiliary contacts
   V 6000
Rated operational voltage
 Ue V AC 690
Overvoltage category/pollution degree
     III/3
Rated insulation voltage
 Ui V 1000
For use in IT electrical power networks
   V 690
Switching capacity
Rated short-circuit making capacity
 Icm    
240 V
 Icm kA 187
400/415 V
 Icm kA 105
440 V 50/60 Hz
 Icm kA 74
525 V 50/60 Hz
 Icm kA 53
690 V 50/60 H
 Ic kA 40
Rated short-circuit breaking capacity Icn
 Icn    
Icu to IEC/EN 60947 test cycle O-t-CO
 Icu kA  
240 V 50/60 Hz
 Icu kA 85
400/415 V 50/60 Hz
 Icu kA 50
440 V 50/60 Hz
 Icu kA 35
525 V 50/60 Hz
 Icu kA 25
690 V 50/60 Hz
 Icu kA 20
500 V DC
 Icu kA 30
750 V DC
 Icu kA 30
Ics to IEC/EN 60947 test cycle O-t-CO-t-CO
 Ics kA  
240 V 50/60 Hz
 Ics kA 85
400/415 V 50/60 Hz
 Ics kA 50
440 V 50/60 Hz
 Ics kA 35
525 V 50/60 Hz
 Ics kA 13
690 V 50/60 Hz
 Ics kA 5
 
     Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Rated short-time withstand current
      
t = 0.3 s
 Icw kA 3.3
t = 1 s
 Icw kA 3.3
Utilization category to IEC/EN 60947-2
     A
Rated making and breaking capacity
      
Rated operational current
 Ie A  
AC-1
      
400 V
 Ie A 630
415 V
 Ie A 500
690 V
 Ie A 630
AC--3
      
400 V
 Ie A 320
415 V
 Ie A 320
690 V
 Ie A 320
DC - -1
      
500 V DC
 Ie CSA 500
750 V DC
 Ie CSA 500
DC - 3
      
500 V DC
 Ie CSA 500
750 V DC
 Ie CSA 500
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release)
 Operations   15000
Lifespan, electrical
      
AC-1
      
400 V V 50/60 Hz
 Operations   5000
415 V V 50/60 Hz
 Operations   5000
690 V 50/60 Hz
 Operations   3000
AC--3
      
400 V 50/60 Hz
 Operations   2000
415 V 50/60 Hz
 Operations   2000
690 V 50/60 Hz
 Operations   2000
DC - -1
      
500 V DC
   Operations 5000
750 V DC
   Operations 5000
DC - 3
      
500 V DC
 Operations   2000
750 V DC
 Operations   2000
Max. operating frequency
   Ops/h 60
Current heat losses per pole at Iuare based on the maximum rated operational current of the frame size.
   W 31
 
     For current heat loss per pole the specification refers to the maximum rated operational current of the frame size.
Total downtime in a short-circuit
   ms < 10
Terminal capacity
Standard equipment
     Screw connection
Round copper conductor
      
Tunnel terminal
      
Solid
   mm2 1 x (16 - 185)
Copper busbar (width x thickness)
 mm    
Bolt terminal and rear-side connection
      
Screw connection
     M10
Technical data according to ETIM 4.0
Number of poles
     3
Rated uninterrupted current Iu
   A 320
Number of auxiliary contacts as N/Cs
     0
Number of auxiliary contacts as N/Os
     0
Device construction
     Built-in device fixed built-in technique
With under voltage release
     No
Motor operator optional
     YES
Integrated earth fault protection
     No
Suitable for DIN rail (top hat rail) mounting
     No
Setting range non-delayed short-circuit release
   A 3200
Setting range short-term delayed short-circuit release
   A 0
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz
   kA 50
Switched-off indicator available
     No
Type of control element
     Toggle lever
Connection type main current circuit
     Screw connection
Motor operator integrated
     No
Position of connection for main circuit
     Front connection
Protection type (IP)
     IP20
Number of auxiliary contacts as changeover contact
     0
Setting range of overload releases
   A 320
Characteristics
Dimensions
Blow out area, minimum clearance to adjacent parts
Minimum clearance to adjacent parts

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