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NZMH4-MX875 191458 EATON ELECTRIC Automatic Int. NZM4 PXR20, 875A, 3p, Screw Terminals
NZMH4-MX875
191458
EATON-MOELLER
NZMH4-MX875
NZM4 PXR20 circuit breaker, 875A, 3p, screw terminal
Circuit Breakers NZM
* Brand new product in its original packaging covered by the warranties and certifications provided by EATON-MOELLER
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▲NZM4 PXR20 circuit breaker, 875A, 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
Delivery program
Product range
Circuit-breaker
Protective function
Motor protection
Standard/Approval
IEC
Installation type
Fixed
Release system
Electronic release
Construction size
NZM4
Description
IEC/EN 60947-2 with characteristic conforming to IEC/EN 60947-4-1 with phase failure sensitivity
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.
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.
Number of poles
3 pole
Standard equipment
Screw connection
Switching capacity
400/415 V 50 Hz [Icu]
85 kA
Rated current = rated uninterrupted current [In= Iu]
875 A
Setting range
Overload trip
[Ir]
[Ir]438 - 875 A
Short-circuit releases
[Irm]Non-delayed
[Ii= Inx …]
[Irm]Non-delayed[Ii= Inx …]2 – 18
Motor rating AC-3 50/60 Hz [P]
380 V 400 V [P]
500 kW
660 V 690 V [P]
800 kW
Motor rating AC-3 50/60 Hz [P]
400 V [P]
500 kW
660 V 690 V [P]
800 kW
Rated operational current AC-3 50/60 Hz [Ie]
400 V [Ie]
846 A
Technical data
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
Damp heat, cyclic, to IEC 60068-2-30
Ambient temperatureAmbient temperature, storage
- 40 - + 70 °C
Ambient temperatureOperation
-25 - +70 °C
Mechanical shock resistance (10 ms half-sinusoidal shock) according to IEC 60068-2-27
15 (half-sinusoidal shock 11 ms) g
Safe isolation to EN 61140Between auxiliary contacts and main contacts
500 V AC
Safe isolation to EN 61140between the auxiliary contacts
300 V AC
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 supply
as required
Degree of protectionDevice
In the operating controls area: IP20 (basic degree of protection)
Degree of protectionEnclosures
With insulating surround: IP40
With door coupling rotary handle: IP66
With door coupling rotary handle: IP66
Degree of protectionTerminations
Tunnel terminal: IP10
Phase isolator and strip terminal: IP00
Phase isolator and strip terminal: IP00
Other technical data (sheet catalogue)
Circuit-breakers
Rated current = rated uninterrupted current [In= Iu]
875 A
Rated surge voltage invariability [Uimp]Main contacts
8000 V
Rated surge voltage invariability [Uimp]Auxiliary contacts
6000 V
Rated operational voltage [Ue]
690 V AC
Overvoltage category/pollution degree
III/3
Rated insulation voltage [Ui]
690 V
Switching capacity
Rated short-circuit making capacity [Icm]240 V [Icm]
275 kA
Rated short-circuit making capacity [Icm]400/415 V [Icm]
187 kA
Rated short-circuit making capacity [Icm]440 V 50/60 Hz [Icm]
187 kA
Rated short-circuit making capacity [Icm]525 V 50/60 Hz [Icm]
143 kA
Rated short-circuit making capacity [Icm]690 V 50/60 H [Ic]
100 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]
125 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]
85 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]
85 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]
65 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]
50 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]
63 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]
50 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]
50 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]
50 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]
37 kA
Rated short-circuit breaking capacity Icn[Icn]
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 currentt = 0.3 s [Icw]
19.2 kA
Rated short-time withstand currentt = 1 s [Icw]
19.2 kA
Utilization category to IEC/EN 60947-2
B
Lifespan, mechanical(of which max. 50 % trip by shunt/undervoltage release) [Operations]
10000
Lifespan, electricalAC-1400 V 50/60 Hz [Operations]
3000
Lifespan, electricalAC-1415 V 50/60 Hz [Operations]
3000
Lifespan, electricalAC-1690 V 50/60 Hz [Operations]
2000
Lifespan, electricalAC--3400 V 50/60 Hz [Operations]
2000
Lifespan, electricalAC--3415 V 50/60 Hz [Operations]
2000
Lifespan, electricalAC--3690 V 50/60 Hz [Operations]
1000
Lifespan, electricalMax. operating frequency
60 Ops/h
Total break time at short-circuit
< 25 ≦ 415 V; < 35 > 415 V ms
Terminal capacity
Standard equipment
Screw connection
Optional accessories
Tunnel terminal
connection on rear
Strip terminal
connection on rear
Strip terminal
Round copper conductorTunnel terminalStranded4-hole
4 x (50 - 240) mm2
Round copper conductorBolt terminal and rear-side connectionDirect on the switchStranded
1 x (120 - 185)
4 x (50 - 185) mm2
4 x (50 - 185) mm2
Round copper conductorBolt terminal and rear-side connectionModule plateSingle hole [min.]
1 x (120 - 300) mm2
Round copper conductorBolt terminal and rear-side connectionModule plateSingle hole [max.]
2 x (95 - 300) mm2
Round copper conductorBolt terminal and rear-side connectionModule plateDouble hole [min.]
2 x (95 - 185) mm2
Round copper conductorBolt terminal and rear-side connectionModule plateDouble hole [max.]
4 x (35 - 185) mm2
Round copper conductorBolt terminal and rear-side connectionConnection width extensionConnection width extension
4 x 300
6 x (95 - 240) mm2
6 x (95 - 240) mm2
Al circular conductorTunnel terminalStranded4-hole
4 x (50 - 240) mm2
Cu strip (number of segments x width x segment thickness)Flat conductor terminal [min.]
6 x 16 x 0.8 mm
Cu strip (number of segments x width x segment thickness)Flat conductor terminal [max.]
(2 x) 10 x 32 x 1.0 mm
Cu strip (number of segments x width x segment thickness)Module plateSingle hole
(2 x) 10 x 50 x 1.0 mm
Cu strip (number of segments x width x segment thickness)Bolt terminal and rear-side connectionFlat copper strip, with holes [min.]
5 x 25 x 1.0 mm
Cu strip (number of segments x width x segment thickness)Bolt terminal and rear-side connectionFlat copper strip, with holes [max.]
(2 x) 10 x 50 x 1.0 mm
Cu strip (number of segments x width x segment thickness)Bolt terminal and rear-side connectionConnection width extension
(2 x) 10 x 80 x 1.0 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionScrew connection
M10
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionDirect on the switch [min.]
25 x 5 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionDirect on the switch [max.]
2 x (50 x 10) mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionModule plateSingle hole [min.]
25 x 5 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionModule plateSingle hole [max.]
2 x (50 x 10) mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionModule plateDouble hole
2 x (50 x 10) mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionConnection width extensionConnection width extension [min.]
60 x 10 mm
Copper busbar (width x thickness) [mm]Bolt terminal and rear-side connectionConnection width extensionConnection width extension [max.]
2 x (80 x 10) mm
Control cables
1 x (0.75 - 2.5)
2 x (0.75 - 1.5) mm2
2 x (0.75 - 1.5) mm2
Design verification as per IEC/EN 61439
Technical data for design verification
Rated operational current for specified heat dissipation [In]
875 A
Equipment heat dissipation, current-dependent [Pvid]
84.984375 W
Operating ambient temperature min.
-25 °C
Operating ambient temperature max.
+70 °C
IEC/EN 61439 design verification
10.2 Strength of materials and parts10.2.2 Corrosion resistance
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.1 Verification of thermal stability of enclosures
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.2 Verification of resistance of insulating materials to normal heat
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.3.3 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 parts10.2.4 Resistance to ultra-violet (UV) radiation
Meets the product standard's requirements.
10.2 Strength of materials and parts10.2.5 Lifting
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts10.2.6 Mechanical impact
Does not apply, since the entire switchgear needs to be evaluated.
10.2 Strength of materials and parts10.2.7 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 Insulation properties10.9.2 Power-frequency electric strength
Is the panel builder's responsibility.
10.9 Insulation properties10.9.3 Impulse withstand voltage
Is the panel builder's responsibility.
10.9 Insulation properties10.9.4 Testing of enclosures made of insulating material
Is the panel builder's responsibility.
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.
Technical data ETIM 8.0
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 ([email protected] [AGZ529016])
Overload release current setting
438 - 875 A
Adjustment range undelayed short-circuit release
2 - 18 A
With thermal protection
Yes
Phase failure sensitive
Yes
Switch off technique
Electronic
Rated operating voltage
690 - 690 V
Rated permanent current Iu
875 A
Rated operation power at AC-3, 230 V
250 kW
Rated operation power at AC-3, 400 V
500 kW
Type of electrical connection of main circuit
Screw connection
Type of control element
Rocker lever
Device construction
Built-in device fixed built-in technique
With integrated auxiliary switch
No
With integrated under voltage release
No
Number of poles
3
Rated short-circuit breaking capacity lcu at 400 V, AC
50 kA
Degree of protection (IP)
IP20
Height
170 mm
Width
210 mm
Depth
375 mm
Dimensions
① Blow out area, minimum clearance to adjacent parts
Ui ≤ 690 V: 100 mm
Ui ≤ 1500 V: 200 mm
② Minimum clearance to adjacent parts
Ui ≤ 1000 V: 15 mm
Ui ≤ 1500 V: 70 mm
Ui ≤ 690 V: 100 mm
Ui ≤ 1500 V: 200 mm
② Minimum clearance to adjacent parts
Ui ≤ 1000 V: 15 mm
Ui ≤ 1500 V: 70 mm
Datasheet - PDF
▲| Title: | Size: | Type: |
|---|---|---|
| PDF CATALOGUE EATON EN.pdf | 51 Mbytes |
|
| NZMH4-MX875 191458 EN_191458.pdf | 295 Kbytes |
|
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