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NZMB1-S8-CNA

Circuit Breaker

NZMB1-S8-CNA

Circuit Breaker

NZMB1-S8-CNA

Circuit Breaker

NZMB1-S8-CNA Circuit Breaker
  • Short-Circuit Protection
  • Thermomagnetic Release
  • Conforms to UL/CSA & IEC Regulations
  • 4 Compact Sizes
  • 3 Poles

Description:

NZMB1-S8-CNA circuit-breakers cover all application cases with just four compact sizes and are suitable for use in the worldwide market. Modular function groups always make mounting flexible. With magnetic short-circuit release in connection with overload relay. With short-circuit release lacking overload trip. Notes: Switches conform to UL/CSA as well as IEC regulations. The rating plate contains IEC switching performance values.

NZMB1-S8-CNA

Technical Specifications

Main Specifications

DescriptionNZMB1-S8-CNA Base Unit
Product rangeCircuit-breaker
Protective functionShort-circuit protection
Standard/ApprovalUL
Installation typeFixed
Release systemThermomagnetic release
DescriptionMotor protection in conjunction with contactor and overload relay
With short-circuit release
Without overload release Ir
Number of poles3 pole
Standard equipmentBox terminal
Rated current = rated uninterrupted current [In = Iu]8 A
DescriptionNZMB1-S8-CNA Base Unit
StandardsUL/CSA
Protection against direct contactFinger and back of hand proof to VDE 0106 Part 100
Climatic proofingDamp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperature
Ambient temperature, storage
- 40 - + 70 °C
Ambient temperature
Operation
-25 - +70 °C
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-2720 (half-sinusoidal shock 20 ms) g
Safe isolation to EN 61140
Between auxiliary contacts and main contacts
500 V AC
Safe isolation to EN 61140
between the auxiliary contacts
300 V AC
Mounting position Mounting Position
Vertical and 90° in all directions With XFI earth-fault release: - NZM1, N1, NZM2, N2: vertical and 90° in all directions with plug-in unit - NZM1, N1, NZM2, N2: vertical, 90° right/left with withdrawable unit: - NZM3, N3: vertical, 90° right/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 supplyas required
Degree of protection
Device
In the operating controls area: IP20 (basic degree of protection)
Degree of protection
Enclosures
With insulating surround: IP40
With door coupling rotary handle: IP66
Degree of protection
Terminations
Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)Weight
Temperature dependency, Derating
Effective power loss
DescriptionNZMB1-S8-CNA Base Unit
Short-circuit releases [Irm ]
Non-delayed [Ii = In x …]
6 - 11
DescriptionNZMB1-S8-CNA Base Unit
Rated surge voltage invariability [Uimp ]
Main contacts
6000 V
Rated surge voltage invariability [Uimp ]
Auxiliary contacts
6000 V
Rated operational voltage [Ue]440 V AC
Overvoltage category/pollution degreeIII/3
Rated insulation voltage [Ui ]690 V
DescriptionNZMB1-S8-CNA Base Unit
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]20000
Lifespan, electrical
AC--3
415 V 50/60 Hz [Operations]
7500
Lifespan, electrical
Max. operating frequency
120 Ops/h
Total break time at short-circuit< 10 ms
DescriptionNZMB1-S8-CNA Base Unit
Standard equipmentBox terminal
Round copper conductor
Box terminal
Solid
1 x (12 … 6) mm2
Round copper conductor
Box terminal
Stranded
1 x (4 … 2/0) mm2
Round copper conductor
Tunnel terminal
Solid
1 x 6 mm2
Round copper conductor
Tunnel terminal
Stranded
Stranded
1 x (4 … 3/0) mm2
Round copper conductor
Bolt terminal and rear-side connection
Direct on the switch
Solid
1 x (12 … 6)
2 x (9 … 6) mm2
Round copper conductor
Bolt terminal and rear-side connection
Direct on the switch
Stranded
1 x (4 … 2/0) mm2
Al conductors, Cu cable
Tunnel terminal
Solid
1 x 16 mm2
Cu strip (number of segments x width x segment thickness)
Box terminal [min.]
2 x 9 x 0.8 mm
Cu strip (number of segments x width x segment thickness)
Box terminal [max.]
9 x 9 x 0.8 mm
Copper busbar (width x thickness) [mm]
Bolt terminal and rear-side connection
Screw connection
M6
Copper busbar (width x thickness) [mm]
Bolt terminal and rear-side connection
Direct on the switch [min.]
12 x 5 mm
Copper busbar (width x thickness) [mm]
Bolt terminal and rear-side connection
Direct on the switch [max.]
16 x 5 mm
Control cables1 x (18 … 14)
2 x (18 … 16) mm2
DescriptionNZMB1-S8-CNA Base Unit
Rated operational current for specified heat dissipation [In]8 A
Equipment heat dissipation, current-dependent [Pvid]1.76 W
Operating ambient temperature min.-25 °C
Operating ambient temperature max.+70 °C
DescriptionNZMB1-S8-CNA Base Unit
10.2 Strength of materials and parts
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2 Strength of materials and parts
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2 Strength of materials and parts
10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2 Strength of materials and parts
10.2.3.3 Verification of resistance of insulating materials to abnormal heat and fire due to internal electric effects
Meets the product standard's requirements.
10.2 Strength of materials and parts
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2 Strength of materials and parts
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts
10.2.7 Inscriptions
Meets the product standard's requirements.
10.3 Degree of protection of ASSEMBLIESDoes not apply, since the entire switchgear needs to be evaluated.
10.4 Clearances and creepage distancesMeets the product standard's requirements.
10.5 Protection against electric shockDoes not apply, since the entire switchgear needs to be evaluated.
10.6 Incorporation of switching devices and componentsDoes not apply, since the entire switchgear needs to be evaluated.
10.7 Internal electrical circuits and connectionsIs the panel builder's responsibility.
10.8 Connections for external conductorsIs the panel builder's responsibility.
10.9 Insulation properties
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9 Insulation properties
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9 Insulation properties
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
10.10 Temperature riseThe panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.11 Short-circuit ratingIs the panel builder's responsibility. The specifications for the switchgear must be observed.
10.12 Electromagnetic compatibilityIs the panel builder's responsibility. The specifications for the switchgear must be observed.
10.13 Mechanical functionThe device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
DescriptionNZMB1-S8-CNA Base Unit
Low-voltage industrial components (EG000017) / Motor protection circuit-breaker (EC000074)
Electric engineering, automation, process control engineering / Low-voltage switch technology / Circuit breaker (LV < 1 kV) / Motor protection circuit-breaker (ecl@ss10.0.1-27-37-04-01 [AGZ529016])
Overload release current setting0 - 0 A
Adjustment range undelayed short-circuit release6 - 11 A
With thermal protectionNo
Phase failure sensitiveNo
Switch off techniqueMagnetic
Rated operating voltage440 - 440 V
Rated permanent current Iu8 A
Rated operation power at AC-3, 230 V1.5 kW
Rated operation power at AC-3, 400 V3 kW
Type of electrical connection of main circuitOther
Type of control elementRocker lever
Device constructionBuilt-in device fixed built-in technique
With integrated auxiliary switchNo
With integrated under voltage releaseNo
Number of poles3
Rated short-circuit breaking capacity lcu at 400 V, AC25 kA
Degree of protection (IP)IP20
Height165.5 mm
Width90 mm
Depth88 mm
DescriptionNZMB1-S8-CNA Base Unit
Product Standards UL 489
UL File No. E31593
UL Category Control No. DKPU2
North America Certification UL recognized
Conditions of Acceptability Only used in motor circuits in conjunction with suitable contactor and overload relay. SCCR value applies for complete combination starter only, consisting of instantaneous trip circuit breaker, contactor and overload relay.
Specially designed for North America Yes
Suitable for Branch circuits, feeder circuits
Current Limiting Circuit-Breaker No
Max. Voltage Rating 480Y/277 V
Degree of Protection UL/CSA Type: -
DescriptionNZMB1-S8-CNA Base Unit
Characteristic curve NZMB1-S8-CNA Characteristic Curve
Short-circuit protection only!
Characteristic curve NZMB1-S8-CNA Characteristic Curve
  
Characteristic curve NZMB1-S8-CNA Characteristic Curve
DescriptionNZMB1-S8-CNA Base Unit
NZMB1-S8-CNA Dimensions
① Blow out area, minimum clearance to adjacent parts
NZMB1-S8-CNA Dimensions