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NZMS2-MX90
191650 NZMS2-MX90
191650

NZM2 PXR20 circuit breaker, 90A, 3p, screw terminalThe xEffect NZM...-MX circuit breaker range with power expert release (PXR) electronic triggering system covers use cases for motor protection with only four compact sizes and is suitable for the IEC market. Test function and settings via micro USB port directly on the switch. Modular function groups always make mounting flexible and may be supplemented by the comprehensive range of accessories. R.m.s. value measurement and thermal memory

NZM2 PXR20 circuit breaker, 90A, 3p, screw terminal
The xEffect NZM...-MX circuit breaker range with power expert release (PXR) electronic triggering system covers use cases for motor protection with only four compact sizes and is suitable for the IEC market. Test function and settings via micro USB port directly on the switch. Modular function groups always make mounting flexible and may be supplemented by the comprehensive range of accessories. R.m.s. value measurement and thermal memory

Product range Circuit-breaker
Protective function Motor protection
Standard/Approval 0000SPC-571
Installation type IEC
Release system Fixed
Construction size Electronic release
Description NZM2
Number of poles IEC/EN 60947-2 with characteristic conforming to IEC/EN 60947-4-1 with phase failure sensitivity

The circuit-breaker fulfills all requirements for AC-3 switching category.


R.m.s. value measurement and “thermal memory”
Adjustable time delay setting to overcome current peaks tr at 6 x Ir also infinity (without overload releases)
All AC-3 rating data applies to direct switching by the circuit-breaker under normal operating conditions. If, for example, a contactor takes over AC-3 switching under normal operating conditions, the full rated uninterrupted current applies to the circuit-breaker, In = Iu.
Standard equipment 3 pole
400/415 V 50 Hz [Icu ] Screw connection
Rated current = rated uninterrupted current [In = Iu] 70 kA
Overload trip [Ir ]
36 - 90 A
Short-circuit releases [Irm ]
>Non-delayed [Ii = In x …]
90 A
380 V 400 V [P] 36 - 90 A
660 V 690 V [P] 2 – 18
400 V [P] 45 kW
660 V 690 V [P] 75 kW
400 V [Ie ] 45 kW
Standards 75 kW
Protection against direct contact 81 A
Climatic proofing IEC/EN 60947
Ambient temperature
>Ambient temperature, storage
Finger and back of hand proof to VDE 0106 Part 100
Ambient temperature
>Operation
Damp heat, constant, to IEC 60068-2-78
Damp heat, cyclic, to IEC 60068-2-30
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27 - 40 - + 70 °C
Safe isolation to EN 61140
>Between auxiliary contacts and main contacts
-25 - +70 °C
Safe isolation to EN 61140
>between the auxiliary contacts
20 (half-sinusoidal shock 20 ms) g
Mounting position 500 V AC
Direction of incoming supply 300 V AC
Degree of protection
>Device
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

Degree of protection
>Enclosures
as required
Degree of protection
>Terminations
In the operating controls area: IP20 (basic degree of protection)
Other technical data (sheet catalogue) With insulating surround: IP40
With door coupling rotary handle: IP66
Rated current = rated uninterrupted current [In = Iu] Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Rated surge voltage invariability [Uimp ]
>Main contacts
Temperature dependency, Derating
Rated surge voltage invariability [Uimp ]
>Auxiliary contacts
90 A
Rated operational voltage [Ue] 8000 V
Overvoltage category/pollution degree 6000 V
Rated insulation voltage [Ui ] 690 V AC
Use in unearthed supply systems III/3
Rated short-circuit making capacity [Icm ]
>240 V [Icm ]
690 V
Rated short-circuit making capacity [Icm ]
>400/415 V [Icm ]
≦ 690 V
Rated short-circuit making capacity [Icm ]
>440 V 50/60 Hz [Icm ]
220 kA
Rated short-circuit making capacity [Icm ]
>525 V 50/60 Hz [Icm ]
154 kA
Rated short-circuit making capacity [Icm ]
>690 V 50/60 H [Ic]
143 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Icu to IEC/EN 60947 test cycle O-t-CO [Icu]
>240 V 50/60 Hz [Icu ]
80 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Icu to IEC/EN 60947 test cycle O-t-CO [Icu]
>400/415 V 50/60 Hz [Icu ]
40 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Icu to IEC/EN 60947 test cycle O-t-CO [Icu]
>440 V 50/60 Hz [Icu ]
100 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Icu to IEC/EN 60947 test cycle O-t-CO [Icu]
>525 V 50/60 Hz [Icu ]
70 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Icu to IEC/EN 60947 test cycle O-t-CO [Icu]
>690 V 50/60 Hz [Icu ]
65 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]
>240 V 50/60 Hz [Ics ]
36 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]
>400/415 V 50/60 Hz [Ics ]
20 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]
>440 V 50/60 Hz [Ics ]
100 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]
>525 V 50/60 Hz [Ics ]
70 kA
Rated short-circuit breaking capacity Icn [Icn ]
>Ics to IEC/EN 60947 test cycle O-t-CO-t-CO [Ics]
>690 V 50/60 Hz [Ics]
65 kA
Rated short-circuit breaking capacity Icn [Icn ] 36 kA
Rated short-time withstand current
>t = 0.3 s [Icw ]
6 kA
Rated short-time withstand current
>t = 1 s [Icw ]
Maximum back-up fuse, if the expected short-circuit currents at the installation location exceed the switching capacity of the circuit-breaker.
Utilization category to IEC/EN 60947-2 1.9 kA
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations] 1.9 kA
Lifespan, electrical
>AC-1
>400 V 50/60 Hz [Operations]
A
Lifespan, electrical
>AC-1
>415 V 50/60 Hz [Operations]
20000
Lifespan, electrical
>AC-1
>690 V 50/60 Hz [Operations]
10000
Lifespan, electrical
>AC--3
>400 V 50/60 Hz [Operations]
10000
Lifespan, electrical
>AC--3
>415 V 50/60 Hz [Operations]
7500
Lifespan, electrical
>AC--3
>690 V 50/60 Hz [Operations]
6500
Lifespan, electrical
>Max. operating frequency
6500
Total break time at short-circuit 5000
Standard equipment 120 Ops/h
Optional accessories < 10 ms
Round copper conductor
>Box terminal
>Solid
Screw connection
Round copper conductor
>Box terminal
>Stranded
Box terminal
Tunnel terminal
connection on rear
Round copper conductor
>Tunnel terminal
>Solid
1 x (10 - 16)
2 x (6 - 16) mm2
Round copper conductor
>Tunnel terminal
>Stranded
>1-hole
1 x (25 - 185)
2 x (25 - 70) mm2
Round copper conductor
>Bolt terminal and rear-side connection
>Direct on the switch
>Solid
1 x 16 mm2
Round copper conductor
>Bolt terminal and rear-side connection
>Direct on the switch
>Stranded
1 x (25 - 185) mm2
Al circular conductor
>Tunnel terminal
>Solid
1 x (10 - 16)
2 x (6 - 16) mm2
Al circular conductor
>Tunnel terminal
>Stranded
>Stranded
1 x (25 - 185)
2 x (25 - 70) mm2
Cu strip (number of segments x width x segment thickness)
>Box terminal [min.]
1 x 16 mm2
Cu strip (number of segments x width x segment thickness)
>Box terminal [max.]
1 x (25 - 185) mm2
Cu strip (number of segments x width x segment thickness)
>Bolt terminal and rear-side connection
>Flat copper strip, with holes [min.]
2 x 9 x 0.8 mm
Cu strip (number of segments x width x segment thickness)
>Bolt terminal and rear-side connection
>Flat copper strip, with holes [max.]
10 x 16 x 0.8
(2x) 8 x 15.5 x 0,8 mm
Copper busbar (width x thickness) [mm]
>Bolt terminal and rear-side connection
>Screw connection
2 x 16 x 0.8 mm
Copper busbar (width x thickness) [mm]
>Bolt terminal and rear-side connection
>Direct on the switch [min.]
10 x 24 x 0.8 mm
Copper busbar (width x thickness) [mm]
>Bolt terminal and rear-side connection
>Direct on the switch [max.]
M8
Control cables 16 x 5 mm
Rated operational current for specified heat dissipation [In] 24 x 8 mm
Equipment heat dissipation, current-dependent [Pvid] 1 x (0.75 - 2.5)
2 x (0.75 - 1.5) mm2
Operating ambient temperature min. 90 A
Operating ambient temperature max. 6.6825 W
10.2 Strength of materials and parts
>10.2.2 Corrosion resistance
-25 °C
10.2 Strength of materials and parts
>10.2.3.1 Verification of thermal stability of enclosures
+70 °C
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
Meets the product standard´s requirements.
10.2 Strength of materials and parts
>10.2.6 Mechanical impact
Meets the product standard´s requirements.
10.2 Strength of materials and parts
>10.2.7 Inscriptions
Does not apply, since the entire switchgear needs to be evaluated.
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 Meets the product standard´s requirements.
10.7 Internal electrical circuits and connections Does not apply, since the entire switchgear needs to be evaluated.
10.8 Connections for external conductors Does not apply, since the entire switchgear needs to be evaluated.
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 rise Is the panel builder´s responsibility.
10.11 Short-circuit rating Is the panel builder´s responsibility.
10.12 Electromagnetic compatibility The panel builder is responsible for the temperature rise calculation. Eaton will provide heat dissipation data for the devices.
10.13 Mechanical function Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Overload release current setting Is the panel builder´s responsibility. The specifications for the switchgear must be observed.
Adjustment range undelayed short-circuit release The device meets the requirements, provided the information in the instruction leaflet (IL) is observed.
With thermal protection 36 - 90 A
Phase failure sensitive 2 - 18 A
Switch off technique Yes
Rated operating voltage Yes
Rated permanent current Iu Electronic
Rated operation power at AC-3, 230 V 690 - 690 V
Rated operation power at AC-3, 400 V 90 A
Type of electrical connection of main circuit 22 kW
Type of control element 45 kW
Device construction Screw connection
With integrated auxiliary switch Rocker lever
With integrated under voltage release Built-in device fixed built-in technique
Number of poles No
Rated short-circuit breaking capacity lcu at 400 V, AC No
Degree of protection (IP) 3
Height 70 kA
Width IP20
Depth 184 mm
Characteristic curve 105 mm
Characteristic curve 149 mm

As Mnelko, we are a reliable partner in industrial automation solutions, offering high-quality and innovative products with a wide product range to meet all the needs of your business. Our product portfolio consists of solutions designed based on the principles of high performance, durability, and efficiency to support modern industrial processes.
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