Trade Price
£267.21
Per
1
Unit
EACH
Pack Quantity
1
Eaton Moeller series NZM - Molded Case Circuit Breaker. Circuit-breaker, 3p, 50A, B1-S50
Product Length/Depth
88 mm
Product Height
145 mm
Product Width
90 mm
Product Weight
1.046 kg
Compliances
RoHS conform
Certifications
IEC
IEC/EN 60947
Rated operational current for specified heat dissipation (In)
50 A
10.11 Short-circuit rating
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
Rated short-circuit breaking capacity Icu (IEC/EN 60947) at 400/415 V, 50/60 Hz
18.5 kA
10.4 Clearances and creepage distances
Meets the product standard's requirements.
10.12 Electromagnetic compatibility
Is the panel builder's responsibility. The specifications for the switchgear must be observed.
Mounting Method
Fixed
Built-in device fixed built-in technique
Amperage Rating
50 A
10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
Terminal capacity (copper strip)
Max. 9 segments of 9 mm x 0.8 mm at box terminal
Min. 2 segments of 9 mm x 0.8 mm at box terminal
Handle type
Rocker lever
10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
Ambient storage temperature - min
40 °C
Protection against direct contact
Finger and back-of-hand proof to VDE 0106 part 100
Terminal capacity (copper busbar)
Min. 12 mm x 5 mm direct at switch rear-side connection
Max. 16 mm x 5 mm direct at switch rear-side connection
M6 at rear-side screw connection
10.8 Connections for external conductors
Is the panel builder's responsibility.
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)
Motor protection in conjunction with overload relay
With short-circuit release
Without overload release Ir
IEC/EN 60947-4-1, IEC/EN 60947-2
The circuit-breaker fulfills all requirements for AC-3 switching category.
Rated current = rated uninterrupted current: 50 A
Terminal capacity hint: Up to 95 mm² can be connected depending on the cable manufacturer.
Ambient operating temperature - max
70 °C
Climatic proofing
Damp heat, cyclic, to IEC 60068-2-30
Damp heat, constant, to IEC 60068-2-78
Terminal capacity (aluminum stranded conductor/cable)
25 mm² - 35 mm² (1x) direct at switch rear-side connection
25 mm² - 35 mm² (2x) direct at switch rear-side connection
25 mm² - 95 mm² (1x) at tunnel terminal
Terminal capacity (copper stranded conductor/cable)
25 mm² (2x) direct at switch rear-side connection
10 mm² - 70 mm² (1x) at box terminal
10 mm² - 70 mm² (1x) direct at switch rear-side connection
6 mm² - 25 mm² (2x) at box terminal
25 mm² - 95 mm² (1x) at 1-hole tunnel terminal
Lifespan, electrical
7500 operations at 415 V AC-1
7500 operations at 400 V AC-1
Electrical connection type of main circuit
Other
Short-circuit total breaktime
< 10 ms
Rated impulse withstand voltage (Uimp) at main contacts
6000 V
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 400/415 V, 50/60 Hz
18.5 kA
10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
Utilization category
A (IEC/EN 60947-2)
Number of poles
Three-pole
Ambient operating temperature - min
-25 °C
10.6 Incorporation of switching devices and components
Does not apply, since the entire switchgear needs to be evaluated.
10.5 Protection against electric shock
Does not apply, since the entire switchgear needs to be evaluated.
Terminal capacity (control cable)
0.75 mm² - 2.5 mm² (1x)
0.75 mm² - 1.5 mm² (2x)
Used with
Door coupling handle PKZ0
Equipment heat dissipation, current-dependent
13.2 W
Instantaneous current setting (Ii) - min
8 A
10.13 Mechanical function
The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
Rated operational current
41 A (400 V AC-3)
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 230 V, 50/60 Hz
30 kA
Application
Use in unearthed supply systems at 440 V
10.3 Degree of protection of assemblies
Does not apply, since the entire switchgear needs to be evaluated.
Rated short-circuit making capacity Icm at 240 V, 50/60 Hz
63 kA
Rated short-circuit breaking capacity Ics (IEC/EN 60947) at 440 V, 50/60 Hz
18.5 kA
Degree of protection (IP), front side
IP40 (with insulating surround)
IP66 (with door coupling rotary handle)
Instantaneous current setting (Ii) - max
14 A
Overload current setting (Ir) - min
0 A
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.
Lifespan, mechanical
20000 operations
Overload current setting (Ir) - max
0 A
Voltage rating
440 V - 440 V
Terminal capacity (copper solid conductor/cable)
10 mm² - 16 mm² (1x) at box terminal
6 mm² - 16 mm² (2x) at box terminal
10 mm² - 16 mm² (1x) direct at switch rear-side connection
6 mm² - 16 mm² (2x) direct at switch rear-side connection
16 mm² (1x) at tunnel terminal
Degree of protection (terminations)
IP10 (tunnel terminal)
IP00 (terminations, phase isolator and strip terminal)
10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
Short-circuit release non-delayed setting - min
400 A
Degree of protection
IP20 (basic degree of protection, in the operating controls area)
IP20
Overvoltage category
III
Rated impulse withstand voltage (Uimp) at auxiliary contacts
6000 V
Terminal capacity (aluminum solid conductor/cable)
16 mm² (1x) at tunnel terminal
10 mm² - 16 mm² (1x) direct at switch rear-side connection
10 mm² - 16 mm² (2x) direct at switch rear-side connection
Switch off technique
Magnetic
Ambient storage temperature - max
70 °C
Optional terminals
Connection on rear. Screw terminal. Tunnel terminal
Release system
Thermomagnetic release
Pollution degree
3
10.7 Internal electrical circuits and connections
Is the panel builder's responsibility.
Rated operating power at AC-3, 230 V
15 kW
10.10 Temperature rise
The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
Functions
Short-circuit protection
Short-circuit release non-delayed setting - max
700 A
Standard terminals
Box terminal
Rated short-circuit making capacity Icm at 400/415 V, 50/60 Hz
53 kA
Rated operating power at AC-3, 400 V
22 kW
Type
Circuit breaker
10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2.7 Inscriptions
Meets the product standard's requirements.
Rated short-circuit making capacity Icm at 440 V, 50/60 Hz
53 kA
Isolation
300 V AC (between the auxiliary contacts)
500 V AC (between auxiliary contacts and main contacts)
Number of operations per hour - max
120
Circuit breaker frame type
NZM1
Direction of incoming supply
As required
Shock resistance
20 g (half-sinusoidal shock 20 ms)
Rated insulation voltage (Ui)
690 V
Datasheet