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107660
Model code: NZMB2-S50-BT-CNA

Eaton Moeller series NZM - Molded Case Circuit Breaker. Circuit-breaker, 3p, 50A, box terminals, B2-S50-BT-CNA

Product specifications
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General specifications

Product Name
Eaton Moeller series NZM molded case circuit breaker magnetic
Catalog Number
107660
Model Code
NZMB2-S50-BT-CNA
EAN
4015081073269
Product Length/Depth
149 mm
Product Height
195 mm
Product Width
105 mm
Product Weight
2.345 kg
Compliances
RoHS conform
Certifications
IEC 60947-2
IEC/EN 60947
Specially designed for North America
CSA (Class No. 1432-01)
UL 489
UL (Category Control Number DKPU2)
UL listed
UL/CSA
CSA (File No. 22086)
CSA certified
CE marking
IEC
CSA-C22.2 No. 5-09
UL (File No. E31593)

Product specifications

Amperage Rating
50 A
Voltage rating
440 V - 440 V
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
20000 operations
Utilization category
A (IEC/EN 60947-2)
Mounting Method
DIN rail (top hat rail) mounting optional
Built-in device fixed built-in technique
Fixed
Climatic proofing
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Equipment heat dissipation, current-dependent
2.38 W
Isolation
500 V AC (between auxiliary contacts and main contacts)
300 V AC (between the auxiliary contacts)
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
Frame clamp
Overvoltage category
III
Rated operational current
300 A (415 V AC-1, making and breaking capacity)
50 A (660-690 V AC-3, making and breaking capacity)
300 A (380/400 V AC-1, making and breaking capacity)
Degree of protection (IP), front side
IP66 (with door coupling rotary handle)
IP40 (with insulating surround)
Degree of protection (terminations)
IP00 (terminations, phase isolator and strip terminal)
IP10 (tunnel terminal)
Number of poles
Three-pole
Terminal capacity (copper strip)
Min. 2 segements of 16 mm x 0.8 mm at rear-side connection (punched)
Max. 10 segments of 16 mm x 0.8 mm at box terminal
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Max. 10 segments of 16 mm x 0.8 mm at rear-side connection (punched)
Lifespan, electrical
6500 operations at 415 V AC-3
7500 operations at 400 V AC-1
Functions
Short-circuit protection
Type
Circuit breaker
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: 50 A
  • Switches conform to UL/CSA as well as the IEC regulations. IEC switching performance values are contained on the rating plate.
  • Motor protection in conjunction with contactor and overload relay
  • With short-circuit release
  • Without overload release Ir
Application
  • Branch circuits, feeder circuits
  • Use in unearthed supply systems at 440 V
Shock resistance
20 g (half-sinusoidal shock 20 ms)
Release system
Thermomagnetic release
Short-circuit total breaktime
< 10 ms
Terminal capacity (control cable)
14 mm² - 18 mm² (1x)
16 mm² - 18 mm² (2x)
Terminal capacity (copper busbar)
M8 at rear-side screw connection
Max. 20 mm x 5 mm direct at switch rear-side connection
Min. 16 mm x 5 mm direct at switch rear-side connection
Terminal capacity (copper solid conductor/cable)
6 mm² - 11 mm² (1x) direct at switch rear-side connection
6 mm² - 12 mm² (1x) at box terminal
16 mm² (1x) at tunnel terminal
Terminal capacity (copper stranded conductor/cable)
4 mm² - 3/0 mm² (1x) direct at switch rear-side connection
4 mm² - 350 mm² (1x) at tunnel terminal
4 mm² - 350 mm² (1x) at box terminal

Export product specification

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Contact Sales Support
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+44 (0) 1753 608 700, Option 3 then Option 1
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Support from Eaton

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